Computational Fluid Dynamics - CFD

Testing Fluid and Energy Flow by simulation for developing Products and Systems. Whether it's Internal flow, External flow, Heat or Energy flow. Our extensive experience in Fluid Dynamics and Thermo Dynamics allows us to advise, design, analyse and develop for a range of applications. 3D CAD Models can be 3D Printed for further workshop and wind tunnel testing for validation and development.

Computational Fluid Dynamics allows you to design, develop and test a product or part without the need to physically produce a prototype that may be flawed and need to be redeveloped.

Flow Analysis (CFD), Fluid & Thermo Dynamic solutions.

• Foresee performance early
• Forecast the most effective changes
• Performance data becomes available
• Suitable for complex flow systems
• Cost effective

CFD offers a fast and cheaper method to develop parts and products and aids the production process. As the design is already in 3D CAD format, is also ideal for Computer Aided Manufacturing )CAM).

Fluid Dynamics problems may be dealt with in a variety of ways. Calculations and drawings are usually the starting point to establish the problem at hand. CFD is ideal for dealing with complex Flow and Energy Problems, as calculating the processes may exhaust a lot of time. CFD analysis is a great tool for identifying and visualising the problem.

Below is an example of an aerofoil, looking at how effectively the negative presure is created v's the drag generated. Ideally used to create effective downforce. Flow can be easily seen via the traces present. More information is available using the CFD process to determine the drag and pressure differentials that determine the resulting downforce.

BERNOULLI'S PRINCIPLE

This formula satisfies the Energy Conservation Law. Many variations from this formula have evolved to deal with specific problems, but all satisfy the Conservation Law.

The Bernouli's Principle formula above states that Initial Potential Energy(PE) + Initial Kinetic Energy(KE) +Energy or Power Inputs = Final Potential Energy +Final Kinetic Energy + Energy Extracted + Losses. 

For more on CFD, see FACEBOOK ALBUM - FLUID DYNAMICS

For a variety of CFD Simulations, they follow the same basic procedures as follows:

The 3D models of components are created and materials are specified. Openings and surfaces are detailed. 

The components are imported into the CFD program.During preprocessing, the model geometry (physical bounds) for the problem is defined, and materials are adopted. The volume occupied by the fluids is divided into discrete cells (called the mesh). The mesh may be uniform or non-uniform, and even adapted during analysis to concentrate on areas of higher activity. 

The physical modeling is defined – for example, the equations of motion + enthalpy + radiation + species conservation Boundary conditions are defined. This involves specifying the fluid behaviour and properties at the boundaries of the problem. For transient problems, the initial conditions are also defined.

The simulation is started and the equations are solved iteratively as a steady-state or transient.

Finally a postprocessor is used for the analysis and visualization of the resulting solution.

For a discussion on how we can help develop your parts or products with Computational Fluid Dynamics, give us a call on 0415 586 890