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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: gschaider

Forum: OpenFOAM Community Contributions September 20, 2013, 08:03

Replies: 15 [swak4Foam] groovyBC: using gradientExpression instead of valueExpression Views: 6,263 Posted By gschaider Well. groovyBC only enables you to set BCs.... Well. groovyBC only enables you to set BCs. Whether they are stable is not its responsibility. Especially gradients are tricky. Because if you have high gradients then the solution might "overshoot"...

Forum: OpenFOAM Community Contributions September 17, 2013, 05:26

Replies: 15 [swak4Foam] groovyBC: using gradientExpression instead of valueExpression Views: 6,263 Posted By gschaider In OpenFOAM on patches "gradient" always means... In OpenFOAM on patches "gradient" always means "gradient in the direction of the surface normal" not "gradient in general cartesian coordinates". So an expression "-h&k" should be sufficient (sign...

Forum: OpenFOAM Community Contributions September 16, 2013, 15:11

Replies: 15 [swak4Foam] groovyBC: using gradientExpression instead of valueExpression Views: 6,263 Posted By gschaider What do you mean with "unsuccessfully": the... What do you mean with "unsuccessfully": the gradients are not set the way you expect them to or the simulation does not behave the way you think it should? Best way to distinguish these two cases is...

Forum: OpenFOAM Community Contributions January 1, 2012, 17:08

Replies: 15 [swak4Foam] groovyBC: using gradientExpression instead of valueExpression Views: 6,263 Posted By gschaider Whether groovyBC might help you with your problem... Whether groovyBC might help you with your problem depends on where the "source" of the deformation comes from (patch on another mesh for instance) and whether that deformation is uniform. The problem...

Forum: OpenFOAM Community Contributions December 29, 2011, 18:22

Replies: 15 [swak4Foam] groovyBC: using gradientExpression instead of valueExpression Views: 6,263 Posted By gschaider You're right. Setting fractionExpression to 0... You're right. Setting fractionExpression to 0 makes groovyBC use only the gradientExpression (basically groovyBC is a wrapper around the standard mixed BC) The business with value vs...

Showing results 1 to 5 of 5

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