Unable to assign a material device in Simulation CFD

Mar 31, 2014


A material device such as an internal fan, distributed resistance, blower, or rotating region material cannot be applied to a part. Meaning, clicking the Apply button on the Material Quick Edit dialog does not do anything.  Sometimes and error message is presented with the text "no surround fluid near the fan"


The likely reason is that the part does not touch a fluid part. Material devices obtain their material properties from adjacent fluid parts. If there is an ambiguity (such as neighboring parts that are all solids), Autodesk® Simulation CFD prevents the material from being applied to the part.


To resolve this issue:

Ensure that one or more fluid parts are adjacent to the part in question. Any fluid parts touching a material device should be assigned first before you assign material devices.


Simulation CFD