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Difficult ICEMCFD question: Extrusion

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Old   December 1, 2006, 09:28
Default Difficult ICEMCFD question: Extrusion
  #1
Walter
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Hi all,

I'm sure you have all used the mesh extrusion function at some time:



The fixed distance extrusion is simple enough: Total extrusion distance = Extrusion distance x Number of layers

However, I'm trying to use the "Function" option i.e. extrusion distance is controlled by a function. The manual is completely silent on how to do this. I think it probably requires a TCL function input but I dont know how to do this and again the manual is silent



Does anyone know how to do this?

Thanks!
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Old   December 1, 2006, 10:31
Default Re: Difficult ICEMCFD question: Extrusion
  #2
myron
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Here's a screen shot of a function with explanation. If you give me an ftp area for where to put it, I can give you an Excel spreadsheet.

http://img178.imageshack.us/my.php?i...udefuncrc7.jpg
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Old   December 1, 2006, 10:38
Default Re: Difficult ICEMCFD question: Extrusion
  #3
Walter
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Awesome. Thanks. This was driving me nuts!

Could you email it to me? ppjjones@gmail.com

Most of the web share services force you to jump through endless loops.
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Old   December 1, 2006, 11:01
Default Re: Difficult ICEMCFD question: Extrusion
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Joe
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I dug around and found a very easy to use web share service:

http://www.gigasize.com/

Just use the quick upload option. No registration etc needed
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Old   December 1, 2006, 12:30
Default Re: Difficult ICEMCFD question: Extrusion
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myron
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Try this link:

http://www.sharebigfile.com/file/293...ction.xls.html
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Old   December 1, 2006, 13:00
Default Re: Difficult ICEMCFD question: Extrusion
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Walter
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Awesome. Thanks again.

To think I just needed to use the layer keyword
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Old   December 5, 2006, 05:27
Default Re: Difficult ICEMCFD question: Extrusion
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Vincent
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When I try to use an exponential function for the cell height: 0.0125*1.25^(layer-1), ICEM responds with "Error: can't use non-numeric string as operand of "^"" How can I solve this?
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Old   December 5, 2006, 11:39
Default Re: Difficult ICEMCFD question: Extrusion
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myron
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Looks like a question for your support provider - or try ** instead of ^ to see if that allows it.
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Old   December 5, 2006, 18:02
Default Re: Difficult ICEMCFD question: Extrusion
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Walter
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Have you resolved this yet?
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Old   December 6, 2006, 04:00
Default Re: Difficult ICEMCFD question: Extrusion
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Vincent
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The correct syntax is: 0.0125 * pow (1.25, layer-10
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Old   April 15, 2011, 10:08
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  #11
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Lorenzo Mazzei
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Sorry, I don't want to dig a 5 years old thread, but it doesn't work. Someone could tell me the correct syntax for an exponential function?
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Old   April 19, 2011, 02:22
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Lorenzo Mazzei
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I've sorted out writing:
"height of first layer" * (1+ "arbitrary number "*(layer-1)*(layer-1)*(layer-1))
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