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Old   November 26, 2014, 02:11
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Yes I try with your method mesh deformation.
With defined displacement of mesh I turned on solid motion (velocity of walek)
and nothing happened. Walek doesnt move. Only interface move.
Are there (ansys help) any examples or tutorials with solid motion ?
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Old   November 26, 2014, 06:20
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I have never used solid motion so I cannot say. If none of the CFX tutorials with the software or on the ANSYS Community website do not show it then ask ANSYS support for an example.
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Old   November 26, 2014, 06:32
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So there are not any solution to make heat transfer on moving solid ??
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Old   November 26, 2014, 06:53
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So on the attachment I'm sending full visualisation of the problem.
So there other way to make solution of this problem??
I need to detrmine mass flow on inlets to make cool down moving pipes from 1100 C to 50 C.
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Old   November 26, 2014, 17:18
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I would not do this using CFD. For a quick approximation you can use standard heat transfer and radiation coefficients and the properties of the bar material to get the cool down rate. That will give you a reasonable approximation.
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Old   November 27, 2014, 03:29
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In which module of Ansys I can do this ?
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Old   November 27, 2014, 18:13
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No need to buy software. You might need to buy a textbook to get the heat transfer coefficients though. The calculation can be done by pen and paper if you are keen, or write a simple solver in excel, matlab, python or whatever your flavour is.
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Old   December 2, 2014, 03:16
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Hello Glenn \\,
So I m working with this simulation. I'm moving fluid domain along steel pipe with second domain inside.
So simulation goes on 15 steps and crashes with neg_vol error or ncwdist.
What is the reason about these errors ??
In mesh displacement I have too much high exp.factor . can be this cause (exp.factor)?? In the first step value of the exp factor is 40 and increase each step to value about 99 in 15 step.
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Old   December 2, 2014, 18:46
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FAQ: http://www.cfd-online.com/Wiki/Ansys..._went_wrong.3F
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Old   December 3, 2014, 04:52
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So I have new idea for this problem
I define solid motion ( in the simulation this solid doesnt move ) but for this option i add boundary advection.
So i have a question
How to model continuous pipe from one side in Ansys CFX??
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