Turbulent Flow Simulation
Turbulent flow simulation is at the core of what we do here at our Singapore offices here at BroadTech engineering.
Computational Fluid Dynamics (CFD)
A Computational Fluid Dynamics CFD turbulent flow simulation is an advanced engineering simulation approach which is based on the study of fluid mechanics formulation.
It enables companies to accurately model, simulate, and study of the fluid flow (either Liquid or Gas) dynamics created by passing through or around specific object designs.
Featured Case Studies
Creation of a Virtual 2D Wave Tank
Created as a device to help analyze floating bodies, in particular buoys and small vessels, this virtual wave tank was developed using a VOF (Volume Of Fluid) approach, as it gives very accurate and fast results to multiphase problems involving air-liquid interface. The model also includes an open channel formulation, which allows the creation of open channel waves as a boundary condition, eliminating the necessity of a moving boundary or inclusion of an alternating mechanism. Many depth x length designs were created based on already existing tanks, which allow the usage of different wave model, from short gravity waves to shallow water (nonlinear breaking) ones. Given the strong influence of pressure field on the air-water interface, a coupled formulation was selected to avoid instability in this critical region. Also, an implicit time formulation was selected, as explicit ones did not allow the staggered grid approach to be applied.
As a result, waves generated under irrotational flow conditions were extremely similar to those analytically predicted by Lamb’s theory, creating a numerical device on which floating bodies can be thoroughly analyzed and later compared to experimental results under the same scaling conditions. Future plans for a 3D version.
CFD Analysis of Pelton Turbine (ANSYS CFX)
Numerical validation of turbine performance with the calculated torque generation by CFD software was done. ANSYS CFX workbench was used to simulate the bucket of the turbine and user-defined torque equation was used to calculate torque generated over time. The simulation was performed in symmetrically sliced three buckets, a half nozzle with 120° domain angle. Runner efficiency of 87.71 % was obtained. SST model provided good convergence. During the simulations, results obtained were directly dependent on the accuracy in the domain set up, quality of mesh, turbulence model, and boundary conditions.
CFD Analysis of Fluid Flow Resistance Through Valve
This project involved calculation of flow resistance in various high-pressure valves. The project also included validation of experimental data. Fluent was used to solve the flow physics. The pressure was measured at multiple locations, and flow resistance was calculated. The meshing was performed using ICEM-CFD, using unstructured tetrahedral cells. The client gave the CAD model. Standard k-epsilon with wall functions was used. Constant property flow was assumed since the experimental data was measured at steady state.
Our engineers performed the pre-processing for all the valves, documenting all the results and preparing a report highlighting the various flow resistance values for the valves.
Numerical CFD Simulation of Transonic Flow Over Complex Configurations
An opensource CFD solver SU2 is used for simulation and Pointwise is mesh generation tool.
Simple wings like HIRENASD to complex structures like whole fighter aircraft (LCA) are studied. Plots of various flow parameters are in agreement with experimental results. With this validation, the analysis is carried out for critical values and thus helped in carrying out safe experimental tests.
Air vortex shedding simulation was done on a spherical object. The turbulence model used was LES Smagorinsky. The results obtained were in good relation to the standard results.
Overview
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1. Powerful Simulation Software Tools
2. Simulation Consultants with Extensive Research & Professional Experience
3. Simulation projects Completed in a Timely and Cost-effective Manner
4. Proven Track Record
5. Affordable
6. Full Knowledge Transfer
Features & Benefits of Turbulent Flow Simulation
1. Cost Savings in Engineering Development
As the engineering Simulation is used early in the engineering development process, it makes it enables engineers to identify and quickly eliminating any potential design issues early in the development process.
This helps to prevent the design flaws from uncovered too late in the engineering development process, such as during post-production, where any design modification will involve serious project schedule delays as well as costly tooling re-work, which can easily be in the range of thousands of dollars.
Overall Computational Fluid dynamics simulation helps to help our clients save precious project time and development expenses.
2. Early Engineering Insights During Design Phase
Fluid Dynamics Simulation offers the tremendous benefit of greatly simplifying the fluid flow analysis by enabling you to easily calculate fluid forces and understand the effect of a design modification on product behavior in a liquid or gas medium.
Engineering Simulation as A Substitute for Actual Physical Testing
When the powerful capabilities of Fluid Dynamics are integrated as a regular part of your engineering design process, it effectively removes the need for the costly fabrication and testing of physical prototypes.
3. Practical Benefits for Diverse Industrial
As the use of Computational Fluid Dynamics (CFD) computer simulation do away the need for actual physical testing, it can practically benefit all Engineering companies in a wide range of industries, such as Aerospace industry, Automotive manufacturer, Bio life science, Defense Technology and Heavy Machinery.
Overview of Flow Simulation Process
With highly efficient computer-based Fluid Dynamics Engineering Simulation software tool, it has made it possible for you to quickly Model, Simulate and efficiently Analysis fluid flow and heat transfer behaviors within a mechanical, electronic, or electrical systems, without the need for any complex analysis and computation.
1. CFD Modelling
Using 3D CAD modeling, a scale virtual model of the system or prototype design to be studied is built.
2. CFD Simulation
1. Base on the theory of fluid flow physics (eg. Navier-Stokes equations) and chemistry to this virtual prototype, the engineering software will generate a simulation of the fluid dynamics and related physical phenomena.
2. Through the analysis of the results generated from the incorporation of the design and its details into the simulation model, one is able to reveal the resultant 3D flow pattern of mass and energy, This includes scenarios such as
1. Moving bodies
2. Fluid-structure interaction
3. Heat temperature transfer during heat dissipation
4. Chemical reaction
5. Mass transfer during diffusion/ Turbulent mixing between 2 fluid bodies
6. Acoustics
7. 3D Flow of Fluids (either Gases or Liquids)- this includes Unsteady and compressible flows
8. Multiphase physics
3. CFD Analysis
Computational Fluid Dynamics (CFD) turbulent flow analysis offers engineers a way to gain a deeper understanding of the prototype design performance behavior.
Base on the analysis data points obtained from the CFD simulation, it makes it possible to
1. Test & Verify New Design
CFD simulation enables the subjecting of the prototype design to the various testing situation in a virtual simulation environment without the requirement for any physical prototype testing, destructive test, or slow cyclic endurance test.
2. Identify Flow Concentration Hotspots
Analyze Airflow behavior & thermal distribution, to identify and address any pressure concentration areas.
3. Fine Tune & Optimize Design without Physical Prototyping
Optimize prototype design to strike a balance between various inversely related parameters, such as
eg. equipment power requirements and Equipment safety
Through the testing and validation of various design variants in a virtual simulation environment, it allows engineers to fine-tune their design to get their detailed designs correct the 1st time even before the first physical prototype is being fabricated & tested physically.
Call Us for a Free Consultation
If you are still interested in learning more about performing a turbulent flow simulation and to see what it can do for you, simply call to contact us today at +6581822236 for a no obligation discussion of your needs.
If you have any queries, our knowledgeable and friendly service representative will be happy to answer any of your questions and understand more about your needs and requirements
Alternatively, for quote request, simply email us your technical details & requirements to at info@broadtechengineering.com