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getting (0 0 0) wallGradU value when i m probing wallGradU at some points

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Old   June 18, 2012, 17:11
Default getting (0 0 0) wallGradU value when i m probing wallGradU at some points
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Dear friends my simulation is flow over a flat plate using LES in of210 and wants to find out wallGradU at some point wall (within 1st cell near to wall). First i have extracted wallGradU field for domain and then by using probeLocations option i m extracting wallGradU at required point locations but getting (0,0,0) value and my all points are within fisrt cell height.....plzzzhelp me on this...am i missing some data extraction???



(Direct wallShearStress option is not working for LES model so i m going to find out first dU/dY and then wall Shear Sterss by rho*nu*dU/dy)..)

Thanks in advance
Nitin Suryawanshi.
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Old   December 9, 2013, 12:36
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Camille Bilger
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Hi Nitin,

I have a very similar problem, I am simulating a flow over a flat plate with interFoam (laminar) and I want wallGradU but it is zero everywhere.
Did you resolve your problem?
Did you instead calculated dU/dy yourself, and if yes how?
Thank you very much for your help.
Camille
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