Computational Fluid Dynamics (CFD)

What is Computational Fluid Dynamics (CFD)?


Welcome to the world of Computational Fluid Dynamics (CFD), where engineering breakthroughs and complex physics meet to help us understand and analyse the flow of fluids. With CFD, engineers are now able to gain insights into how a system will interact with its environment and make informed decisions that could potentially change the world. CFD is a field of study that challenges assumptions and uncovers new ways to solve engineering conundrums. 


Engineers and architects can investigate steady state or transient simulations, fluid and thermal mixing, temperature and velocity profiles using computational fluid dynamics (CFD). CFD uses computational power to solve the equations that govern fluid flow.


1. What Are The Benefits of CFD?


CFD simulation helps engineers to get more accurate results from various engineering studies and design optimisation. It allows them to optimise designs that better the conditions for a product or system and helps them to identify areas where design changes may be required before manufacturing an item or structure. CFD simulations can also help engineers develop innovative products quickly and at lower cost than traditional computing methods. The software used for this type of analysis also offers powerful pre-simulation analysis tools and post-simulation results analysis tools which can greatly aid the design process. 


In the building industry, using CFD allows building professionals to anticipate and solve unfavourable localised effects. The extensive examination of planned mechanical and electrical systems made possible by CFD analysis is especially helpful in large areas and enables additional fine-tuning to obtain the precise required internal conditions.


2.1 Common uses of CFD in the Building Industry


Common uses of CFD include evaluating:

  • Complex spaces with a mixture of natural and mechanical ventilation, such as multi-level open offices.
  • Suitability study of HVAC systems for thermal comfort in big inhabited venues like gyms, concert halls, and auditoriums.
  • Thermal conditions produced by suggested mechanical systems in large buildings with strict specifications, e.g. specialised warehouse storage, museums/ and galleries.
  • The performance of complex fluid flow.
  • Potential design errors before the HVAC equipment are installed thus reducing cost and construction time.


CFD Consulting Company in Malaysia


Companies in Malaysia interested in bringing Computational Fluid Dynamics into their workplace or product, need to choose a CFD consulting company. A CFD consulting company provides engineering simulations and solutions with the help of CFD software for a variety of industries. There are a number of these companies throughout Malaysia that specialise in CFD analysis and software.


When looking for a CFD consulting company, it is important to consider their past works and their service offerings so that you know exactly what they offer clients like yourself. Because CFD covers a large field, an expert in a field of HVAC might not be the expert in the field of aerospace. Make sure you inquire into details such as what kind of training they provide, the range of simulation capabilities they have, as well as any additional services such as technical support after project completion that could be useful to your business needs.


We provide the specialist knowledge to perform CFD simulations to our clients in Malaysia. Some of our past work include simulations in buildings. Figure 1 below shows the distribution of flow by a wall mounted split air-conditioning system. The simulation was run using transient analysis. The orange/green colours observed show the velocity jet exiting the AC. Air entering the intake vent above the AC unit is also observed.



Subsequently, Figure 2 shows a steady state simulation performed to determine the total force loading on a roof surface. The study was performed to enable the Civil and Structural (C&S) engineer to ensure there is sufficient truss support at the roof after accounting for the weight of the solar panels and the effects of wind. The wind loading at 15 m/s wind velocity amounted to an additional load of 1/4 the total solar panel weight acting on the roof.


Figure 2: Studying the wind loading on a residential roof surface.


3. Role of a CFD Engineer in Malaysia


A CFD engineer in Malaysia is responsible for the development, design, and troubleshooting of state-of-the-art solutions. These include numerical simulations of fluid flow using sophisticated computer codes, while performing detailed data analysis of results and preparing technical reports. A CFD engineer in Malaysia must also possess strong communication and organisational abilities as they will be working in a fast-paced industry. It is important to always perform literature review on published research papers prior to simulating as the industry is dynamic. 


The main role of a CFD engineer in Malaysia is to develop complex numerical models for analysing turbulent and multiphase flow dynamics. They must design algorithms, simulate physical systems and processes, analyse results, provide high-quality documentation for those tasks, present findings to technical or domestic stakeholders, optimise code performance where needed, develop efficient numerical simulations solutions and integrate them into existing systems. 


Additionally, a CFD Engineer in Malaysia needs to identify areas where product design can be improved, developing verification programs required to demonstrate accuracy of their results accordingly as well as having good understanding of principles and fundamental laws governing fluid dynamics theory to develop realistic simulation model. Therefore, clarity with geometry setups and boundary condition definitions is important alongside having sound knowledge regarding suitable discretisation schemes and convergence criteria adopted during simulations. 


3.1 CFD Design Engineer Software and Tools


The CFD engineer typically works in the aerospace, automotive, building or other industrial engineering industries and must have excellent understanding of CFD software tools. These include ANSYS Fluent, ANSYS CFX, Simscale and OpenFOAM.


The work of a CFD Design Engineer involves using various types of software programs to simulate fluid flow properties such as pressure and density through 3-dimensional simulation studies. The engineer must understand how complex mathematical equations should be written into computer code in order to generate accurate results from different types of simulations. Additionally, the engineer should be able to use Computer Aided Design (CAD) tools to generate designs for analysis.


Our M&E Consultant Solutions


As M&E consultants, our solutions for Computational Fluid Dynamics include performing CFD analysis according to your precise needs, conducting option assessments and offering professional advice on the most efficient solutions for your applications.


Perunding JW is an M&E Consulting firm based in Malaysia. If you are looking for more information or resources, reach out to our team of engineers. We will gladly assist you. Visit our homepage or call us at +603 7955 5918.

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