CFD Services

Professional Computational Fluid Dynamic Services

CFD Services is at the core of what we provide for our valued clients at our Singapore Offices in BroadTech Engineering. We are an Engineering simulation and Numerical modeling consultancy with deep expertise and experience in CFD analysis.

Our team of highly professional and skilled engineering simulation consultants engaged in our CFD company is able to solve practically all kinds of engineering challenges concerning to fluid flows and fluid mechanics.
From simple problems to complex CFD fluid flow challenges, no problem is too small or too big for us to handle.
Leveraging on our CFD expertise, we are able to offer our clients a professional CFD simulation & CFD modeling service that is Cost-effective and delivered in an efficient and timely manner.
Though our CFD consulting services, we strive to help companies

● Improve their engineering design performance and quality

● Optimize engineering energy efficiency and Reduce carbon footprints in the environment

● Keep business operation costs low to ensure profitability. This includes business activities such as manufacturing, transportation, industrial processes etc.

Featured Case Studies

Optimization of Aerodynamic Lift to Drag Ratio

This project involved high-fidelity aerodynamic flow simulations over NLR 7301 high lift device, with an objective to increase the lift-drag ratio of the wing to facilitate and enhance the take-off condition.
A block-structured 3D mesh was created in ICEM-CFD and CFD flow simulations were performed using the state of the art SU2 software. Note that the wing geometry used has already been optimized by the Client aerospace firm.
The result of the project was that we were able to effectively increase the lift to drag ratio by 2%.

Optimization of Car Exhaust Duct

The objective of this CFD simulation project is to optimize an exhaust duct of a car engine to reduce the power-loss across the duct. The flow simulations were performed using OpenFoam flow solver and used in conjunction with CAD modeling software and python optimizer.

Through the CFD services from BroadTech Engineering, the end results of this simulation project were that we were able to get a 12% reduction in power loss.

Here you can create the content that will be used within the module.

Investigation into Under Utilization of Propellant in Rocket Motor

The objective of this project was to accurately simulate the gas-liquid flow behavior through a discharge port of a vessel.
This problem was simulated in order to study the phenomenon which is very common in liquid propellant rocket motors, where it has an adverse effect on the performance and lead to underutilization of the propellant.
The CFD simulations were carried out using the commercial ANSYS Fluent code using the volume of fluid (VOF) method, which obtains the volume fraction of each of the fluid throughout the domain and thereby captures the gas-liquid interface motion.
The results of this study were later published in a peer-reviewed journal.

Pressure Distribution effects of Chevron fences on Film Cooling Effectiveness and Flow Structures

In this study, the effectiveness of film thermal cooling for novel upstream fence geometries was investigated by using ANSYS CFX and compared with other control experimental setups. Velocity profiles, pressure coefficient profiles and turbulence kinetic energy contours were taken into consideration.
Results show that the fence cases are characterized by three pressure coefficient peaks that are responsible for generating a useful higher pressure differential between the leading edge of a film hole and the mid-line region to improve coolant lateral spreading.
Results from the CFD simulation indicate that the best novel fence is chevron with rounded edge shape in order to maximize film cooling effectiveness levels compared to conventional cooling fin geometries.

Our CFD Service Offerings

We offer various engineering design optimization solutions such as

1. Combustion Analysis

This includes Fluid dynamics Simulation and Modeling of Chemical species distribution, elemental analysis, flame analysis, engine emission analysis, Fuel mixing analysis.

2. Turbomachinery Analysis

This encompasses Fluid dynamics analysis, Modeling, and simulation the occurrence of any fluid cavitation, Optimization of propeller blade design and Simulation of thermal heat transfer analysis

3. Engineering Aerodynamic Analysis

This includes Computational Fluid Analysis of wind turbine blade design, vortex shedding, HVAC applications, wind-farm analysis, and airborne particle transport.

4. Fluid Multiphase Flow Analysis

This includes CFD flow analysis of free surface flows, Simulation and Tracking of particulate dispersion & concentration distribution, fuel injection design optimization, Simulation of mixed species & reacting flows, and Optimization of fluid spray design

5. Thermal Heat Transfer Analysis

This encompasses CFD Thermal Analysis of heat exchanger efficiency, Thermal Heat transfer modeling and simulation, hot spot analysis and identification, and heat sink design analysis.

Overview

1. FEA Consulting

2. CFD Consulting

3. LS-DYNA Consulting

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.

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Contact Us!

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1. Powerful CFD Services Simulation Software Tools

2. FEA Consultants with Extensive Research & Professional Experience

2. CFD Consultants with Extensive Research & Professional Experience

3. FEA projects Completed in a Timely and Cost-effective Manner

3. CFD Services projects Completed in a Timely and Cost-effective Manner

4. Proven Track Record

5. Affordable

6. Full Knowledge Transfer

Features & Benefits of CFD Simulation Service

1. Optimization of Design Efficiency

Our wide range of CFD simulation capabilities allows you to enjoy a Reliable and Fast CFD results to Validate Your engineering design in virtually any general, specialty and complex multiphysics engineering problems.
This allows you to maximize your product design’s efficiency and performance to extend the boundary of what is feasible.

2. Professional Interpretation of Data

When you work with us at BroadTech engineering, we go beyond just offering you the qualitative results data provided by the CFD service.

Engineering Insights

Base on the CFD engineering simulation, Our experienced Engineering expert consultants can deliver to you accurate and In-depth Engineering insights into predictions & potential trade-offs of specific engineering design

3. Accelerated Product Development Time to Market

Reduce Product Development Costs

The valuable deep engineering insight provided by our CFD simulation gives our clients the ability to accurately predict and uncover unexpected design performance behavior & have greater confidence in their engineering solutions.
This helps to reduce the need for slow and expensive physical prototype testing and save our clients product development time.

Accelerate the Design Cycle

This allows companies to shorten the design cycle and innovate faster by allowing them to make better, timely engineering decision without compromising accuracy.
This shortens your product development time to market allows you to beat the market competition and get your product to market in a shorter period of time

4. Engineering Design Innovation & Optimization

Uncover opportunities for design configuration previously not considered which could be a potential breakthrough innovation in your product engineering design, which you might otherwise easily missed.
This offered you many benefits such as improved performance, lowered energy consumption and reduced costs

5. Get the Most Value out of a World class Simulation service

To maximize the value you get out of your investment in a world-class CFD simulation service, you have to ensure that the person or your engineering staff operating the CFD simulation software is well trained to handle the sophistication of the CFD simulation service.

Challenges of Hiring and Training an In-house CFD Engineering Team

However, base on our conversation with many engineering firms and business owners across a wide range of industries, they face the difficulties of not being able to build an in-house expertise due to the steep learning curve of the CFD software and employee turnover rates, which makes it necessary to spend additional time and resources to rehire and re-train new engineers

No Expensive Software, No Staff Training

We help companies overcome their CFD simulation challenges without the requirement for a sizable financial investment to be made in the purchase of a CFD simulation software or hiring and training of engineers.
This allows you to be more productive and be more cost competitive.

Other Featured CFD Services Case Studies

Time-Accurate Unsteady Pressure Loads Estimation on Heavy Lift Space Launch Vehicle at Flight Conditions (Single & Multi-Species Simulations)

Simulations were carried out using flow solver HiFUN

Objective:

1. Estimation of Unsteady Pressure Loads on the Heavy Lift Space Launch Vehicle at Transonic/Supersonic flight conditions using Steady/Unsteady CFD Simulations (RANS, URANS, DES)

2. Simulations should be carried out with and without Boosters (ON/OFF) conditions for a given Species.

3. Unsteady Pressure Loads needs to be extracted at 800 port locations and to be compared with wind tunnel and flight data

4. Carry out grid sensitivity study and time-step sensitivity study to establish the best practices to use for further analysis

5. Optimum grid needs to be generated for an analysis and Simulations should be carried out using flow solver HiFUN for a physical time of 1.2 Seconds

Approach:

Grid Generation Strategy:

After literature survey and in-house experience in handling CFD simulations for such a configurations,

the initial optimal grid was generated.The grid size was about 100 Million volumes. The unsteady pressure loads are highly non-linear and have localized effects which can excite frequency that can damage the Launch vehicle structure.

So proper care was taken while generating the grid to capture the local unsteady effects.

1. Hybrid Unstructured grids were generated for steady/unsteady simulations

2. Steady Simulations were carried out using flow solver HiFUN for flight conditions and steady pressure are computed.

These solutions can go as an initial solution for an unsteady simulation.

It’s a RANS simulation with Spalart-Allmaras(S-A) turbulence model. Second-order spatial discretization with Green-Gauss based reconstruction was employed.

3. Unsteady Simulations are carried out with Steady state solution as an initial guess. Second-order spatial discretization with Green-Gauss based reconstruction was employed. Second order Backward Euler time integration procedure was used for time.

4. Time-Step was chosen based on the simulation frequency and simulations are carried out with HiFUN Unsteady solver with Duel-time stepping procedure. The minimum convergence criteria at Dual iteration was ensured for a proper convergence.

5. Based on previous simulations results, the successive grids were generated and time-step sensitivity study also done.

Conclusions/Observations:

1. Unsteady and Steady pressures are computed on the surface of the Launch vehicle and were compared with wind tunnel and flight data.

It was observed that more than half the ports data were comparable with flight and wind tunnel data.

2. A set of procedures were established to carry out the future CFD studies for the Heavy Lift Launch Vehicle along with grid sensitivity and time-step sensitivity studies.

3. Based on the unsteady pressure data, all local frequencies were calculated. This is one of the important parameter used for structural design modifications.

4. Finally, It’s a computationally very intensive study due to handling such a big grid size and also Unsteady simulations along with a Multi-Species. The computational requirements for such studies also recorded.

Analysis of Particle (Black powder) Separation efficiency in the Cyclone

The objective of this project is to perform a CFD analysis to determine following performance parameters as given below:

• Flow pattern,

• Pressure distribution and

• Particle (Black powder) Separation efficiency in the cyclone

Due to the presence of moisture in the sales gas, liquid also enters into the cyclone (along with solid particles) in the form of droplets or slugs. Due to centrifugal action, the heavier solids and liquids are separated and collected at the bottom of the cyclone in the sump. Further analysis is carried out to

• Track the liquid-gas interface to visualize the motion of the interface and determine the unbalanced forces and moments acting on the cyclone

• Monitor the time-dependent unbalanced forces on the cyclone to determine its amplitude and frequency

Methodology

• The flue gases flow pattern and turbulence are modeled using Reynolds Stress Model (RSM). The RSM model solves the transport equations for Reynolds stresses and hence is more accurate to capture the vertical and tangential velocities present in cyclone separators.

• Transient multi-phase analysis using VOF model is used to track time-dependent motion of the liquid and determine the forces on the cyclone

Conclusion

• For higher inlet velocity flow analysis, it is observed that for 50% removal efficiency, the cut off the diameter of the particle is 7 microns. Furthermore, it is predicted that for particle size greater than 12 microns, the removal efficiency obtained is 100%.

• For lower inlet velocity analysis, it is observed that for 50% removal efficiency, the cut off the diameter of the particle is 10 microns. Furthermore, it is predicted that for particle size greater than 15 microns, the removal efficiency obtained is 100%.

• With reference to the inputs and based on CFD analysis, it is evident that there are fluctuating moment and force about the X and Y axis or about the axis of the vessel. Hence, further FEA analysis is carried out to verify the unbalance moment or force is created due to liquid rotation which otherwise would lead to vibration of the vessel.

Leak Localization of ITER Vacuum Vessel using DSMC-ITER France: DSMC

Objective:

• Modern tokamaks are large, heavy and powerful machines that can be brought down by a mere pinhole in their vacuum system or piping networks. Whether microscopic or visible, holes, cracks and faults cause leaks, which in turn allow air, water or helium to diffuse into areas that are forbidden to them. At best, a leak can seriously degrade the machine’s performance; at worst it can stop operations

Methodology

Task 1: Modeling studies to determine the spatial pressure distribution of water vapor in the areas around an ITER blanket shielding module (BSM) using DSMC

Task 2: Modeling of the behavior of water flowing through a crevice into vacuum

Fluidyn has received following distinctions

• Innovation award of SOLVAY

On Capturing Pitch-Up Phenomena on a Fighter Aircraft

Objective:

1. Estimation of aerodynamic performance characteristics of a Fighter Aircraft at transonic flight speed

2. Capturing the Pitch-Up phenomena on a Fighter aircraft at transonic speed.

3. Finding out the characteristic behavior of the Vortices on Fighter aircraft wing at transonic speed.

Approach

Simulations were carried out using flow solver HiFUN and ANSYS-Fluent

Grid Generation and Solver Setup:

1. The hybrid unstructured grid was generated with an appropriate mesh refinements on the wing surface to capture the vortices.

2. Full body geometry was considered with fully loaded conditions (all stores are attached)

3. Steady RANS simulations are carried out with S-A and SST turbulence models. Roe/HLLC scheme with second-order spatial accuracy was used.

Green-Gauss based reconstruction procedure was used along with limiter. All simulations convergence level was ensured with proper CFL number and relaxation factors.

Conclusions/Observations

1. The Pith-Up characteristics of a Fighter Aircraft were studied and It’s compared with wind tunnel data.

2. Grid resolution on capturing the vortices plays an important role to capture the aircraft Pitch-Up.

3. Using the Higher-Order scheme with RANS does a better job than using Euler Simulations.

4. Numerical Stability issues were found while using Higher-order schemes to capture the Pitch Up due to massive flow separation and Shockwaves..

So choosing schemes and CFL number to be appropriate to ensure the desired convergence.

Thermal Analysis of Small Form Factor Embedded System (SFFES)

Objective

The SFFES system works as a high computing chassis (Electronics Enclosure) using high-end graphics module entirely packed in a small form factor complying with a guideline specified in VITA standard.

The main objective is to design SFFES which can withstand high temperature operating condition as per JSS55555 standard, calculate critical components temperature margins.

Methodology

• The SFFES module employs a hybrid cooling approach that employs conduction and Forced convection cooling at a specified temperature limit from -30 C to +50C

• Heat Pipes have been considered for CPU and GPU modules for better thermal management

• Two Resistor model is used for electronics components to calculate the thermal margins

Conclusion

• Successfully designed SFFES chassis and filed patent on Advanced thermal management solutions for SFFES systems which will be used for Indian Defense

• Also filed patent on Efficient Thermal Management with Fluid Susceptibility Solutions for Electronic Enclosures using combinations of convection and conduction cooled standoffs with lattice structures

Leak Localization of ITER Vacuum Vessel using DSMC-ITER France: DSMC

Objective:

Methodology

Task 1: Modeling studies to determine the spatial pressure distribution of water vapor in the areas around an ITER blanket shielding module (BSM) using DSMC

Task 2: Modeling of the behavior of water flowing through a crevice into vacuum

Fluidyn has received following distinctions

• Innovation award of SOLVAY

CFD Simulation of the Cyclone Separator

Objective: This case study is intended to optimize the Hydro Cyclone design

Approach: The Hydro Cyclone is being used in the separation of solid-fluid and Fluid. Discrete Particle Method (DPM) has been used to trace the particle track in the Hydro Cyclone.

Outcomes: A steady-state simulation is carried for different inlet/outlet ratios.The optimized design is figured out with a 10 % improvement in the separation efficiency.

Strata Rescue Chamber Modeling

Objective: To Study the absorption behavior of the Sodasorb curtains (CO2 removal curtains) and C02 concentration levels for different time levels up to 96 hours.

Approach: With the help of symmetric boundary condition, Only half of the chamber is considered for the CFD model. Species transport equation is chosen to account the CO2 dispersion in the chamber and CO2 absorption on the curtains is calculated with a heterogeneous reaction rate and it is exported to the species transport equation with the help of a UDF, as a source term. Also, adsorption curtains are assumed as porous media and equivalent resistances are given.

Outcomes: The model is simulated with an unsteady state-run, adsorption phenomena and CO2 levels are predicted at different time intervals.These results help our sales representatives to prove our adsorption curtain performance with the Strata team and got the business.

Call Us for a Free Consultation

If you are still interested in learning more about our CFD Services and to see what it can do for you, simply call to contact at +6581822236 for a no obligation discussion of your simulation needs.
Our knowledgeable and friendly consultants will be glad to assist and understand more about your needs and requirements

Alternatively, for quote request, simply email us your detailed technical specifications & requirements to info@broadtechengineering.com

Applications of CFD Simulation Services

We CFD consultants have extensive experience in providing CFD simulation & Numerical modeling services for in a wide array of critical industries and industrial applications, such as

● Optimizing Aerodynamics of engineering structure design by taking into account external environmental wind loads (eg. Building, Oil tanks)

● Enhancing building airflow for Natural ventilation

● Improve Energy efficiency of HVAC systems in both Residential and Commercial buildings (eg. Datacenter)

● Thermal cooling optimization of Electronic component design

● Analysis and Optimization of Water filtration in wastewater management plants

● Optimize Airflow circulation in Aircraft flight and automotive passenger cabins

● Optimize Energy efficiency of Heat exchangers, Heating and refrigeration equipment

● Lighting Modeling, Simulation, and Analysis

● Simulation of chemical Fluid mixing in industrial mixing tanks

● Thermal optimization of Automotive under-hood

● Simulation of flow control performance in Mechanical equipment

Types of Fluid Flow that we can Simulate

Our CFD analysis services are suitable for the analysis of a various type of Fluid Flows.
This includes

1. Steady and transient flows

2. Dispersed multi-phase flows

3. Multiple rotation zones

4. Chemical reactions

5. Heat transfer (including convection, conduction, and radiation)

6. Incompressible and compressible flows

7. Free surface flows

8. Cavitation

9. Multiple streams