CFD Companies
A Computational Fluid Dynamics (CFD) Company
BroadTech Engineering is one of the Leading CFD Companies (Computational Fluid Dynamics) in Singapore.
Our goal is to help industrial organizations and Research partners to exploit the practical usefulness of CFD consulting and CFD simulation software analysis to solve real-world engineering challenges.
Also, Our CFD Consultants allows you to have a clearer insight into the dynamic fluid flow, Thermal heat transfer, and related flow processes that occur in industrial and environmental flow processes.
With this practical application of CFD simulation analysis via our CFD consulting services, it enables our CFD Consultancy clients and industry partners to enjoy advantages such as
- More evolved engineering design concepts
- Improved Engineering design solutions of prototypes and processes
- Enhanced performance of the engineering process and prototypes.
Featured Case Studies
Turbulence Study on Building Canopy
The observatory telescope uses Adaptive Optics. This system feeds the post-processing of optical data with a factor to compensate for the effect that the turbulence over the dome has on the resolution of the image.
An FSI Simulation and CFD aerodynamic study were performed on the canopy design to:
- Use Fluid Flow Analysis to Dimension the forces that the engines of the gates needed to generate for all atmospheric conditions.
- Evaluate the level of turbulent energy created by the gates on the line of sight of the telescope mirror, post process CFD Fluid Flow Simulation results and check if levels are within Adaptive Optics operational range.
Analysis of Oxygenation Tank Stirring
In this Water Treatment Simulation Consultancy project, the oxygenation process of the purifying plant needed to increase its absorption of organic gas in the mud pre-treatment tank.
Gas is supplied through a venturi device installed under a propeller in the tank that stirs the mud in suspension.
Propeller design was optimized using our CFD Modeling Services to better use the available mechanical power and increase venturi effect.
Absorption cone and customized stators were designed and installed.
The findings from the CFD studies were used in other Wastewater Treatment simulation studies.
About Us
BroadTech Engineering is a CFD Consulting Company founded by a group of engineers in partnership with Dr. Ng Chuan Lim Robert, a prominent Professional Engineer, and internationally recognized CFD expert.
He has under him accumulated over 40 years of CFD Engineering related experience in the area of academic CFD research as well as consultancy for Commercial industrial applications.
In addition, he has published over 200 research publications on the study of CFD to date.
He has over 20 years of research experience in CFD code development and has successfully completed over 200 industrial CFD consulting projects (with wide range of applications in the area of Maritime engineering, Aerospace engineering, Automotive design validation, Thermal cooling of electronics, HVAC, Fire & safety assessment, and Environmental airflow engineering)
His research interest includes numerical modeling of turbulence simulation and development of numerical discretization techniques for partial differential equations.
Overview
About Us
BroadTech Engineering is a Leading Engineering Simulation and Numerical Modelling Consultancy in Singapore.
We Help Our Clients Gain Valuable Insights to Optimize and Improve Product Performance, Reliability, and Efficiency.
We Help Our Clients Gain Valuable Insights to Optimize and Improve Product Performance, Reliability, and Efficiency.
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1. Powerful CFD Simulation Software Tools
2. CFD Consultants with Extensive Research & Professional Experience
3. CFD projects Completed in a Timely and Cost-effective Manner
4. Proven Track Record
5. Affordable
6. Full Knowledge Transfer
Comprehensive Range of Professional Finite Element Analysis (FEA) Consulting Services
1. Motion and Multiphysics CFD Simulation
ANSYS CFD Flow Simulation software tools are widely recognized in the CFD simulation arena as the industry-leading multiphysics numerical modeling software tool.
They enable for precise and robust linkage between the various physics CFD modeling tools to perform various complex Computational Fluid Flow Simulation.
These valuable tools allow BroadTech Engineering to model a wide variety of multiphysics and multidisciplinary simulation models in the course of performing our CFD services.
These various Examples of Multiphysics interactions modeled using Computational Fluid Dynamics Simulation can include
- Tightly coupled flexible deformation of the solid bodies reacting to the spatial-dependent and time-varying fluid pressure forces and shear loading forces.
- Varying fluid volume caused by rigid motion of solid bodies, typically encountered in FSI Analysis Services provided to clients
- Simple Coupling of solid body thermal temperatures for the purpose of material pre-stressing Modeling when performing Computational Fluid Dynamics Analysis
Related Ansys CFD software features & capabilities used:
- 3D Meshing Solver technologies, with features such as Mesh moving, Mesh geometry morphing, Re-meshing
- Rigid body motion simulation, in applications such as Natural Ventilation CFD Simulation and Jet Fan CFD Analysis studies in the Green Building Industry
- Thermal, Acoustic, and Structural coupling. Based upon both tightly coupled and decoupled numerical modeling Methodologies, commonly used in Ship Hydrodynamics simulation analysis, Propeller CFD Simulation and Green Water loading simulation for purpose of Ship Performance Optimization.
- Detection of contact forces between bodies and condition-based events, such as simulation scenarios commonly encountered in Numerical Ship Hydrodynamics simulation and Cavitation CFD Studies when performing Ship Propeller Simulation
2. Foundational CFD Simulation
Computational Fluid Dynamics (CFD) numerical models are built based on the capability to mathematically calculate the fluid flow using FSI Analysis. This CFD Simulation involves the use of input characteristics, such as variability in particle vector velocity and net pressure values of the fluid volume.
CFD analysis models have been extended over time to include more complex multi-dynamic physics like combustion processes, detailed flow turbulence (multiphase, Non-newtonian, Hypersonic), aeroacoustic, and coupling with a whole array of other physics solvers.
This original, highly validated CFD simulation models are still widely highly relevant today to answer a huge number of fluid problems when the more complex CFD models are not needed.
Related Ansys CFD software features & capabilities used:
- Optimized High-Performance Computing (HPC) capabilities including Platform MPI, Intel MPI, and MSPI technologies, which is suitable for computationally intensive CFD simulation applications, such as
- Mesh generation using ANSYS ICEM, ANSYS Turbogrid, ANSYS Meshing, and Fluent Meshing
- Laminar, transitional, and fully turbulent Simulation with scale resolving, time-averaged, and hybrid turbulence models for Complex Turbulent Modeling Simulation studies
- Steady-state and complex transient reacting flow simulations, commonly used in Building Ventilation CFD and Air Flow Simulation Studies which is used for applications such as Data Center CFD Analysis simulation, Wind-Driven Rain Simulation, HVAC CFD Simulation, as well as Cooling Tower CFD Simulation
- Complex accurate material models that can take into account Newtonian & Non-Newtonian viscosity, real gas compressibility, Single-phase & Multiphase effects, and Subsonic & Hypersonic flow.
3. Optimization CFD Simulation
The verification of design changes is an advantage of CFD Design validation and numerical simulation in general.
Once an initial numerical model is solved, subsequent workflow involved in the CFD Analysis Services scope of work involves resolving with new input parameters or geometry conditions simply involves updating the CFD simulation model and rerunning the CFD simulation process.
BroadTech Engineering has a whole suite of world-class simulation optimization tools (such as Non-parametric optimization tools) that can intelligently guide the optimization process.
Related Ansys CFD software features & capabilities used:
The use of parametric or non-parametric optimization to reliably increase the performance of an existing design
- Adjoint simulation non-parametric optimization normally used in Building Performance Simulation studies, such as Thermal Comfort analysis Simulation, Data Center CFD Analysis Simulation, and Wind Driven Rain of Louvers.
- Numerical Modelling & Evaluation of Design Sensitivity, commonly used by ESD Consultants
- Response surface, direct, and hybrid parametric optimization
- Optimization of existing design to enhance Durability
4. Thermal (Heat Transfer) Simulation
CFD flow analysis models can be used by many established CFD Services Companies to calculate the heat transmission through Solid and Fluid bodies through Conduction, Convection, and Radiation.
It is from this CFD fluid dynamic simulation models that the heat transfer coefficients for virtually any types of flow behaviors, such as Natural, Forced, and mixed convection flows can be calculated by consultants from the CFD Fluid Dynamics Company.
More Advanced heat transfer effects like Viscous heating, compressibility, real material models, and Material phase transition (such as Evaporation, Flashing, Cavitation, and Boiling) can be also included in the CFD Thermal analysis.
Related Ansys CFD analysis software features & capabilities used includes:
- Temperature-dependent material properties
- Full energy equation, including high-Mach number compressibility effects
- Modelling of Phase transition and material boiling models
- Thermal Conduction and Convection process through solids and fluid bodies (this includes Force and natural (buoyancy-driven) convection)
- Radiation models including P1, surface-to-surface, and ray tracing
5. Rotating Machinery Simulation
The rotating frame of reference formulation of the Navier-Stokes equations is used to include the rotating motion of components such as propeller rotors, impellers, and mechanical mixers.
This simulation methodology does not require a remeshing to accurately capture the motion coupling to the standard stationary formulation of the Navier-Stokes equations.
This fluid dynamic analysis process allows the powerful ANSYS CFD simulation tool to model the dynamic fluid motion precisely promptly.
This allows for accurate performance evaluation, of rotating machinery such as Mixing tanks, Pumps, fans, compressors, and turbines by using Centrifugal Pump CFD Simulation and Centrifugal Pump Impeller CFD Analysis Simulation.
These analysis technologies used in the Centrifugal Pump Simulation include complex turbulent Flow Simulation models, such as the mentor laminar-transitional SST turbulent flow numerical model, which has a long track record of proven usage in modeling rotating machinery.
The real gas properties of the fluid can be included along with multiphase physical effects such as Cavitation to accurately simulate on and off-design performance.
Related Ansys CFD software features & capabilities used:
- Frozen rotor, mixing (stage), transient, time transformation, and Fourier transformation interfaces between rotating and stationary domains.
This is commonly used in various types of Fan CFD Studies, such as Axial Fan CFD Simulation, Jet Fan CFD Analysis, and Centrifugal Fan CFD Analysis - Fully turbulent, transitional and laminar flow models for all fluid turbulent CFD Modeling conditions
- Meshing (TurboGrid) of Rotating machinery and Post simulation processing, which is commonly used for Centrifugal Pump CFD Analysis Simulation, Centrifugal Fan CFD analysis and Jet Fan CFD Analysis Studies
- Complex & Dynamic material simulation models such as Real gas models and Multiphase flow models
6. Free Surface Simulation
Using the volume of fluid (VOF) simulation model, we can use ANSYS CFD simulation to predict the location of the free surface interface position and its interaction effects between two or multiple material phases.
To enables the concurrent modeling of numerous multiphase flow conditions, additional simulation input parameters such as Inter-phase transference of mass (phase change), Species, Energy, Momentum, and Surface tension, can also be added into the CFD simulation.
Related Ansys CFD software features & capabilities used:
- Turbulent flow damping at free surface interface
- Volume of Fluid (VOF) multiphase numerical modeling of Level Set coupled surface tension
- Open-channel flow wave and options for simulating numerical beach boundary condition
7. Reacting Flow, Chemistry, and Combustion Simulation
ANSYS CFD capabilities include calculating the advective and diffusive transportation of different chemical species and the resultant mixing of species.
We can also utilize ANSYS CFD software tools to simulate in minute detail complete chemical reactions with our Chemistry Reaction Design solver.
Coupling the detailed flow field and chemistry, even complicated real-world chemical combustion problems can be investigated.
We are even able to accurately model up to thousands of chemical reactions, to make it possible to predict of even minor chemical compounds in advanced real-world geometries.
Related Ansys CFD software features & capabilities used:
- Complex turbulent flow modeling, including scale resolving models, to accurately model mixing rate of mixing
- Simulation of Material properties that is dependent on Temperature, species, pressure, and multiphase flow conditions
- Volumetric and surface-based Chemistry reactions
- Finite rate chemical reaction solvers with acceleration computation technology
- Concurrent combustion numerical models
8. Particle Tracking Simulation
The addition of Multiphase flow numerical simulation models allows the calculation of various complex Multiphase flow geometry behaviors including
- Granular Flow
- Liquid-gas Flow
- Liquid-liquid Flow
- Dispersed Flow
- Separated Flow
Even more complex physics can be added in the Simulation, such as inter Phase change, reactions, Breaking up of the dispersed phase, and variation in Flow regime.
Related Ansys CFD software features & capabilities used:
- Single and Multiphase flow conditions characterized by Porous media flow
- Tracking of Particle and numerous advanced physics. This includes physics such as Breakup, Collision, Contact, Coalescence, Phase change, and Combustion reactions
- Multiphase phase transition simulation models, such as Cavitation, Boiling, Condensation, Wall boiling, Flashing, and Species transfer.
- Multiphase flow conditions with High-density liquid-liquid, liquid-gas, and granular flow
9. Aeroacoustics
The noise created from turbulent fluid flow can be simulated and modeled with ANSYS CFD software.
This enables the prediction and reduction of the noise arising from the turbulence simulation scenarios, such as Airfoil simulation Studies.
Case Studies of Project Accomplished
Below is a selection of some CFD consulting projects that we have successfully accomplished for our customers.
Due to the sensitive nature of the consultancy work involved, we strive to not preserve details concerning our client’s identity.
In the case studies section of past CFD consulting projects that we were engaged in, you’ll soon realize our expert work as consultants is universally applied to a broad range of projects.
Fire Safety Assessment
Evaluation of Smoke Suppression Systems
● Simulate and Validate Performance of Smoke Control Engineering System Design in relation to Fire Safety Regulatory Requirements of the building Occupants.
● Base on the Building design, taking into account available exhaust vents & prevailing environmental wind speed, we are able to model Smoke plume generated by a fire outbreak in, to get a precise assessment of the smoke movement into the external environment.
Analysis of Complex Airflow Behavior During Fire Outbreak
● We have the capability to accurately Model and Predict complicated dynamic Airflow Behavior, Temperature contour distribution & Smoke Movement (Visibility Level) under different Fire outbreak Scenarios & Operating Conditions.
Base on CFD numerical models, we are able to accurately evaluate and predict stratification of smoke (layering) which is caused due to a loss of smoke buoyancy at the building ceiling.
Building Aerodynamics & Wind Engineering
Analysis of Building Aerodynamics
● Simulation, Analysis, and Optimization of Natural Wind Movement Around High rise Buildings & Effects on Nearby Built Environment
● Modelling and Optimization of Surface pressure contours on buildings & terrain due to External Wind loading forces
Design of Natural Building Indoor Ventilation
● Harness Wind Resource as a form of Renewable and Sustainable Energy for Natural Ventilation in Living Areas
This involves the Simulation, Analysis, and Optimization of wind Velocity vectors distribution in the Residential apartment when due to pre-existing Wind conditions available.
Optimization of Industrial Ventilation, Heating & Cooling in HVAC Systems
Mitigation of Heat Stacking Effect in HVAC system
● Mitigation of Heat Stacking Effect due to Recirculation of Hot Exhaust Air Discharged from Air-Conditioning Condenser Units.
Through CFD analysis, we are able to provide you design innovations which can help to Enhance Operational Efficiency & prolong the useful Life of air conditioning equipment
● Base on the distribution patterns of Particles trajectories of the exhaust air emitted from air conditioning condenser units, we are able to verify if whether there is an entrapment of hot exhaust air back into condenser units.
A recirculation of exhaust air can result in exponentially higher exhaust air temperature & temperature within air well.
A recirculation of exhaust air can result in exponentially higher exhaust air temperature & temperature within air well.
Assessment of Air Conditioning Performance
● Investigate dynamic Airflow patterns & Heat Transfer Behavior in Large indoor Spaces for purpose of Evaluating Efficiency of proposed Air Conditioning System Design
● This involves simulating and studying the Temperature distribution contours on specific cross-sectional planes in the building which accounts for various heat sources such as building internal occupant, and environmental heat loads from the sun.
Air Pollution Health Risk Assessment
Indoor Air Pollution Control
- Through accurate CFD simulation, we are able to precisely predict Particles trajectory Distribution of exhaust air discharged from building plume fans located at the building roof area.
- Base on this numerical modeling, we can evaluate whether there is an ingestion of airborne pollutants from upwind Exhausts ducts by building ventilation air intakes, which is indicative of a re-entrainment of airborne contaminant back into building roof area.
Downstream Air Pollution Control
Using CFD Computational Fluid analysis tools, we are also able to accurately model the Dispersion movement of air pollutant plume discharged from building exhaust ducts.
The distribution movement of the contaminant Particles trajectories is an accurate indicator of contaminant dispersion downstream into neighboring residential Buildings.
Electronics Cooling & Thermal Management
● Thermal Structure Design for efficient Cooling of Advanced Electronic component packages
● Optimization of Surface temperature exchange of Die & Lead Frame in Metric Quad Flat Pack (MQFP) due to natural convection cooling in JEDEC enclosure.
Naval Architecture & Marine Engineering
● Minimization of Hull Resistance. This is for Suppression of Detection Signatures in Naval Surface Ships & Submarines
● Ensure Free laminar surface flow around submarine indicating wave breaking at bow, formation of near-field bow wave & trailing wake
Offshore & Marine Engineering
● Optimization of Anti-Wave Baffle Design for Skimmer Pre-Deoiler Naval Vessel, to Stabilise Fluid Movement and to Reduce undesirable Mixing of Oil & Water in Vessel for Increased Oil/Water Separation Effectiveness
● Transient free boundary surface of water output in Skimmer Pre-Deoiler Naval Vessel, installed on Floating Production Unit, subjected to varying motions & accelerations of open sea wave motion (6DoF)
Features & Benefits of FEA Consulting
An actual physical engineering test can reveal you of an occurrence of a failure in a product or structure, however, this inefficient testing and development process is often Costly, takes up precious product development time and in many cases, does not really reveal the real cause of the failure.
With our FEA consulting services, we can help you to answer to several questions that a real-world test simply can’t.
This includes
1. Identification of Areas with Excess Material to save on unnecessary material and weight.
Having an iterative and intelligent FEA analysis process which helps engineers to push the boundaries to optimize engineering designs that maximize strength and minimize cost
2. Determination of the product structure’s current Margin of safety
1. Powerful ANSYS FEA Simulation Software Tools
Our FEA engineering consultants engineers employ some of the industry’s most advanced analysis tools which are widely recognized as the best-in-class in the engineering simulation industry.
This includes ANSYS finite element analysis FEA software Tools such as
– ANSYS Mechanical
– ANSYS Multiphysics
– ANSYS nCode DesignLife
– ANSYS LS-DYNA
2. FEA Consultants with Extensive Research & Professional Experience
Our team of FEA consulting engineers consultants you will be working with has advanced degrees and deep expertise across a wide range of industries such as Automotive machinery, Biomedical, Aerospace engineering, Building & Construction, chemical equipment, Power Generation, Oil and gas, and Consumer Electronics.
3. FEA projects Completed in a Timely and Cost-effective Manner
Throughout the entire life of the FEA consulting project, our FEA consulting engineers will work closely with you to understand your analysis requirements to ensure that the right finite element analysis approach is adopted.
4. Proven Track Record
For several years, our FEA consulting services have been relied upon to provide answers to some of the most challenging Structural and Thermal Analysis projects.
From basic part component analysis to total end-to-end FEA analysis processes, we are able to deliver reliable insights solutions that help you to solve real-world challenges.
5. Affordable
Our Finite Element Analysis (FEA) consultancy services offer you an engineering analysis solution that is accurate, timely and cost-effective
Our affordable analysis services allow smaller-scale companies to enjoy the benefit of a professional Finite Element Analysis solution without incurring a heavy cost of employing a full-time in-house FEA engineer.
6. Full Knowledge Transfer
Our FEA consulting services does not just end with the results. To ensure that there is a complete knowledge transfer at the end of the analysis, we conduct comprehensive training to ensure there is no doubt on the understanding of the Finite Element results.
Call Us for a Free Consultation
Discover what our FEA consulting services can do for your company today by calling us today at +6581822236 for a no obligation discussion of your needs. If you have any questions or queries, our knowledgeable and friendly technical staff will be happy to answer any of your queries and assist to understand more about your needs and requirements Alternatively, for quote request, simply email us your technical specifications & detailed requirements to info@broadtechengineering.com
Other Featured CFD Case Studies
Vehicle aerodynamics of a Bus for battery cover failure using CFD.
Transient vehicle aerodynamics CFD and Computational Aeroacoustics simulation of k9 bus were done under various speed at different environmental conditions. These environmental conditions are similar to those encountered in Natural Ventilation Simulation and Wind Driven Rain simulation studies.
CFD analysis and Vehicle Dynamics Simulation was performed using Ansys Fluent. The outcome was taken in form of Pressure variation, drag force analysis on the bus as well as on battery cover and as discussed failure reason was structural.
The client needed a permanent solution for the failure so we suggested modified design even failure was not due to aerodynamics.
Apart from that for new product development, we studied the battery thermal management strategy and which is still under process analysis.
Analysis of stability in turbulent lean partially premixed flames in various burners.
We were engaged as an external CFD company for this joint research project with JATP lab of IISC to perform Air Flow Analysis Simulation.
Partially premixed combustion analysis was done for various available burner designs such as conical jet flame burner.
The CFD analysis was done using the partially premixed combustion model in Ansys Fluent. It was a research project so for the period of internship I got a chance to do a small part of the project as an intern.
CFD Simulations and Validation from the ‘Lab Data’ for the performance of the ‘DAMA’ and the ‘Ambiator’
Simulation Objective: the entire project was to design, analyze, experimentation and validation of a fully functional HVAC lab
Methodology: the biggest size of ‘Ambiator’ (an IDEC based air cooler) was taken into consideration. The heat load was calculated and the required size of heating, cooling and humidification apparatus was determined.
Later CAD model was created using Creo-Parametric 2.0, meshing was done partially using ‘Salome’, ‘next-gen’ and later a complete mesh was created using ICEMCFD. CFD analysis was done using OpenFOAM.
From the flow analysis, the mixing of different steam of air was analyzed at the inlet and respective performance of DAMA (a patented heat exchanger) at various inlet conditions (as determined by ISHRAE and ASHRAE) are simulated.
Results and Conclusion: CFD simulation were showing the proper mixing of various streams of air at the inlet. Based on the CFD results the lab was constructed in the new unit of ‘HMX’ in Bangalore.
The CFD results were closely agreeing with the lab results
Specific water consumption, heat and mass balance was balanced within error range of +/- 5%
Vehicle Underhood CFD Thermal Simulation
Objective
In a car, most of the components like Plastic, Nylon & other temperature-sensitive materials in a vehicle can become so hot, that they can potentially cause thermal failures, or degrade other nearby components leading to serious issues. Sensitive components in the vehicle Underhood due to heat load cause thermal failures and need to take care of these failures. One of the most extreme thermal stress scenarios is thermal soak, where a vehicle with a hot engine rapidly comes to a halt (IDLE condition) and the underhood temperature increases because there is no cooling airflow.
In this CFD Simulation study, Careful and detailed analysis of component placement and thermal shielding was analyzed to avoid costly failures. On the other side, the airflow behavior, heat exchanger performance, fan torque requirements, flow recirculation zones and other flow obstructions are assessed as well and adequate design modifications are done based on the CFD simulation results.
Methodology
It is observed from the Thermal Simulation that the extreme thermal stress on the engine occurs when the vehicle comes to halt after a long period of driving. The following scenarios affect the temperature in the vehicle underhood region –
Fan On – The vehicle is in neutral and the heat exchanger fan is on. This is encountered during heavy traffic and stoppage at signals.
Fan Off – The vehicle is in key-off condition after running.
In this CFD Consultancy study, the ‘fan on’ scenario is considered to perform the CFD simulation as the second scenario is very computationally expensive.
This initial CFD Simulation model preparation is a crucial job especially for the full vehicle modeling which involves the input data clean up, CAD idealization/simplification. To remove insignificant components to make the geometry airtight, re-meshing and volume meshing as the final stage of pre-processing.
In this study, steady-state airflow analysis & conjugate heat transfer was carried out for a complete car. As the analysis involves conjugate heat transfer which includes conduction, convection, and radiation. The model is assigned with appropriate boundary conditions to replicate reality. Operating conditions are replicated by imposing appropriate boundary conditions.
The Fan rotation is modeled through MRF physics with fan rpm specifications. Appropriate solution monitors are observed to assure the solution convergence.
CAE Tools Used
StarCCM+ – Pre-processing/Simulation/Post Processing
Outcome & Conclusion
The major objective of the CFD analysis was to determine the average temperature distribution on the heat shields. Convection envelope was captured near the thermal heat shields (engine, turbocharger, exhaust line) to check the temperature distribution.
Further CAD modifications were done for the heat exchanger sealing, front grille openings, fan shroud, hex air guides to improve the ambient air circulation inside the Underhood cabin.
Summary
The complete vehicle thermal Simulation study was done to predict the temperature distribution around the vehicle. The CFD analysis was performed to understand the flow characteristics and temperature distribution to provide detailed thermal behavior of the car Underhood components. This provides insight to enhance the design quality and choose the right material for the heat shield.
Optimization of the flame stabilization methods in premixed micro-combustion of the hydrogen-air mixture using CFD.
In micro combustor stabilization of flame is a necessary task to deal with effective combustion efficiency. out of 5 methods of flame stabilization, the bluff body method was used in a micro combustor tube with various velocities.
Earlier we narrow down L/D ratio of the micro combustor and for optimized L/D ratio, we introduce 9 various shapes of the bluff body.
Hydrogen air premixed combustion of equivalence ratio of 0.5 is considered as part of the Airflow Modeling simulation.
The analysis was done using Ansys Fluent using species transport model with a hydrogen-air premixed mixture.
In conclusion, we found with the L/D ratio of 12 and the wall blade bluff body case has more flame stabilization without effecting combustion efficiency.
Centrifugal Blower (radial blades) design, Customization, manufacturing, Balancing, and Testing
Simulation Objective:
The static pressure of Axial fans was not enough to overcome the entire resistance, hence two-fans were required. The objective of this Building ventilation analysis was to replace the entire fans by a single centrifugal fan without increasing the cost.
Methodology:
Firstly the working, design, and handling of the centrifugal fans were studied from the ‘centrifugal fans handbook’. After a literature review, it is learned that radial blades are self-cleaning blades and can handle dirty (dusty) air as well. Hence, no maintenance is required.
As per the theoretical calculations, centrifugal fans were designed for 4″ water gauge pressure. Creo-Parametric 3.0 was used for CAD, ICEMCFD was used for meshing, OpenFOAM and Ansys-Fluent was used for analysis
Later, manufacturing was done using Laser-Cutting and Sheet metal operations. Traditional methods were using for balancing the rotor
Outcome and Conclusion:
- Flow losses were analyzed at various bends and heat-exchangers.
- it was learned that, if ‘static pressure’ is converted to ‘velocity pressure’ there are no / negligible losses, while for vice-versa, nearly 50% of the energy is lost in turbulence.
- overall machine design is improved, while, using ‘Laser Cutting’ and ‘sheet metal operations’ the overall cost maintained within 10% of the original cost (with axial fans) without compromising the quality.