Introduction to CFX

•Computational fluid dynamics (CFD) is the science of predicting fluid flow, heat and mass transfer, chemical reactions, and related phenomena by solving numerically the set of governing mathematical equations–Conservation of mass, momentum, energy, species mass, etc.• •The results of CFD analyses are relevant in:–Conceptual studies of new designs–Detailed product development–Troubleshooting–Redesign– •CFD analysis complements testing and experimentation by:–reducing total effortreducing cost required for experimentation•ANSYS CFD solvers are based on the finite volume method–The fluid region is decomposed into a finite set of control volumes–General conservation (transport) equations for mass, momentum, energy, species, etc. are solved on this set of control volumes

–Continuous partial differential equations (the governing equations) are discretized into a system of linear algebraic equations that can be solved on a computer

•Problem Identification

1.Define your modeling goals

2.Identify the domain you will model

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•PreProcessing and Solver Execution

3.Create a solid model to represent the domain

4.Design and create the mesh (grid)

5.Set up the physics

•Physical models, domain properties, boundary conditions, …

6.Define solver settings

•numerical schemes, convergence controls, …

7.Compute and monitor the solution

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•Post-Processing

8.Examine the results

Consider revisions to the model

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