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Showing results 1 to 21 of 21 Search took 0.00 seconds. Search: Posts Made By: panda60

Forum: OpenFOAM Running, Solving & CFD January 20, 2011, 23:28

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois, My mesh is totally rectangular... Dear Francois, My mesh is totally rectangular grid, in most regrions, the y+=1. My free-flow velocity is a profile which changes with height. the largest velocity is in above boundary layer height...

Forum: OpenFOAM Running, Solving & CFD January 20, 2011, 09:40

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois, Thanks for your reply! Indeed,... Dear Francois, Thanks for your reply! Indeed, if nearestCell can be used, that will be the best. But I have tried directMappedFixedValue , this boundary file is too complex, and nearly can't be...

Forum: OpenFOAM Running, Solving & CFD January 19, 2011, 08:19

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 I give Ux=1.5 as initial field and Inlet patch... I give Ux=1.5 as initial field and Inlet patch value. After 7 seconds later, the flow field seems to develop, and have the boundary layer thickness which I want. I will wait some days to have a look...

Forum: OpenFOAM Running, Solving & CFD January 19, 2011, 08:03

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Now I try to use outlet boundary as recycling... Now I try to use outlet boundary as recycling plane. The following is code: //Kataoka method to generate inflow turbulence case directMappedPolyPatch::NEARESTFACE: { ...

Forum: OpenFOAM Running, Solving & CFD January 19, 2011, 07:51

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois and James Please don't stop... Dear Francois and James Please don't stop to discuss here. I need your help. Now it is very clear that, 1. you don't have position to modify "nearestPatchFace" , whereas "nearestFace" already...

Forum: OpenFOAM Running, Solving & CFD January 17, 2011, 10:16

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois, It seems that, for... Dear Francois, It seems that, for "directMappedVelocityFlux ", "nearestFace" only can work if the distance you set is near boundary position. That means, nearestFace only work for boundary patch,...

Forum: OpenFOAM Running, Solving & CFD January 13, 2011, 11:25

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 The link is just the OpenFOAM bugs Reporting web.... The link is just the OpenFOAM bugs Reporting web. http://www.openfoam.com/mantisbt/my_view_page.php

Forum: OpenFOAM Running, Solving & CFD January 13, 2011, 11:21

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois, It is indeed interesting.... Dear Francois, It is indeed interesting. setAverge true may drive the flow. But this average just a uniform value, for example(10,0,0). But a profile average(Ux=f(z)) is what I want. But I don't...

Forum: OpenFOAM Running, Solving & CFD January 13, 2011, 02:31

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois, I updaed to the new version,... Dear Francois, I updaed to the new version, this also happens. Do you think my setting is right ? what is the meaning of offset ? It is the distance of the inlet plane to the sampling plane, am...

Forum: OpenFOAM Running, Solving & CFD January 13, 2011, 00:46

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois, Thanks for your answer so... Dear Francois, Thanks for your answer so quickly. the time tween Netherlands and Japan is different, so yesterday night I went home to sleep. I see the directMapped utility was modified again...

Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 10:55

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Francois, Yes, I did like this. Is... Dear Francois, Yes, I did like this. Is there something which are not appropriate in my setting ? Thanks.

Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 09:35

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Are you sure you didn't use previous velocity... Are you sure you didn't use previous velocity information as a starting condition for a new run? Like running a simulation, and using the last result as the starting time step of your new simulation....

Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 04:13

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 So I think the method "nearestCell" is correct,... So I think the method "nearestCell" is correct, but the "nearestFace" method in new version 1.7.x is still wrong. I just updated to the version 1.7.x last month(2010.12.20). Because only...

Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 04:07

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 3. directMappedVelocityFlux (nearestFace). U... 3. directMappedVelocityFlux (nearestFace). U file: boundaryField { inlet { type directMappedVelocityFlux; value uniform (10 0 0); phi ...

Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 04:00

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 2. directMapped (nearestFace). U file: ... 2. directMapped (nearestFace). U file: boundaryField { inlet { type directMapped; setAverage false; average (10 0 0); value ...

Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 03:53

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 1. directMapped (nearestCell). U file: ... 1. directMapped (nearestCell). U file: boundaryField { inlet { type directMapped; setAverage false; average (10 0 0);

Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 03:44

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Fransje... Dear Fransje (http://www.cfd-online.com/Forums/members/fransje.html), I am sorry, I haven't explain clearly. I run the case in the directory...

Forum: OpenFOAM Running, Solving & CFD January 10, 2011, 09:34

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 I run the "pitzDailyDirectMapped" tutorials. I... I run the "pitzDailyDirectMapped" tutorials. I initialize the flow field using Ux=10m/s. But after some time steps, the Ux value become very small. I think the velocity was not recycled at all. ...

Forum: OpenFOAM Running, Solving & CFD January 10, 2011, 03:19

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear Fransje... Dear Fransje (http://www.cfd-online.com/Forums/members/fransje.html), I use directMappedVelocityFlux to recycle the velocity field, but the flow field can not develop at all. After some steps, the...

Forum: OpenFOAM Running, Solving & CFD February 9, 2010, 09:19

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear all, It seems that... Dear all, It seems that pitzDailyDirectMapped case can't be run in version-1.6. When I run, I have the following mistakes: patch type 'patch' not type 'directMappedPatchBase' for...

Forum: OpenFOAM Running, Solving & CFD January 29, 2010, 09:58

Replies: 101 Inlet BC for LES Views: 25,772 Posted By panda60 Dear eugene... Dear eugene (http://www.cfd-online.com/Forums/members/eugene.html), It seems that OpenFOAM only can simply map the internal value back to inlet. If I want to use mapping position value multiply an...

Showing results 1 to 21 of 21

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