|December 20, 2010, 01:43||
Join Date: Jul 2010
Posts: 42Rep Power: 8
I want to use the following expression in inlet boundary condition:
where omega,Pmax are defined.
But I get the following error:
Bad expression value 'Pin' detected in parameter 'Relative Pressure' in object '/FLOW:Flow Analysis 1/DOMAINefault Domain/BOUNDARY:Inlet/BOUNDARY CONDITIONS/MASS AND MOMENTUM'.
The dimensions of the argument to function 'step' are inconsistent with expected dimensions.
Argument dimensions resolve to 's'; expected '<dimensionless>'.
|December 20, 2010, 03:20||
Join Date: Mar 2009
Posts: 594Rep Power: 12
Your step functions need to be dimensionless, just as the error says.
Change step(t-0.02) to step((t-0.02[s])/1[s]) for example.
|December 20, 2010, 03:41||
Join Date: Dec 2010
Posts: 2Rep Power: 0
Yes, Lance is right! Wherever you have something that has a dimension in your expression, you need to divide it for its dimension unit. So, wherever you have time, you need to divide by 1 [s].
|Thread||Thread Starter||Forum||Replies||Last Post|
|[ICEM] Proper way to name boundaries on 2D model for use in CFX?||RossFS||ANSYS Meshing & Geometry||4||November 10, 2011 03:38|
|Pros and Cons for CFX, CFdesign, COMSOL||Val||Main CFD Forum||3||June 10, 2011 02:20|
|CFX pressure in Simulations problem||nasdak||CFX||1||April 14, 2010 13:22|
|PhD using CFX||Rui||CFX||9||May 28, 2007 05:59|
|CFX 4.4 installation problem||Pandu Sattvika||CFX||1||December 1, 2001 05:07|