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Forum: CFX

August 4, 2013, 08:47

Replies: 7

Mesh deformation test

Views: 1,876

Posted By ghorrocks

Rather than asking why is 0.1s time step too big,...

Rather than asking why is 0.1s time step too big, why not ask what time step size do I need to run to get an accurate solution? So I suggest you run some trial simulations with different time step...

Forum: CFX

August 4, 2013, 07:54

Replies: 7

Mesh deformation test

Views: 1,876

Posted By ghorrocks

You have the heat transfer model set to...

You have the heat transfer model set to "Isothermal". This makes the fluid incompressible. You want this to be "Total Energy" to model an compressible fluid. Also your fluid is "Air at 25C" this...

Forum: CFX

August 4, 2013, 07:14

Replies: 7

Mesh deformation test

Views: 1,876

Posted By ghorrocks

I have done this type of analysis many times and...

I have done this type of analysis many times and accurately reproduced adiabatic compression of an ideal gas. I regard this as an important benchmark simulation to complete accurately before doing...

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