Error while postProcessing icoFoam case to get grad(U)

shashanktiwari619 · July 27, 2019, 19:02

I am trying to post-process U data from a simulation in icoFoam to get the grad(U). I use the command

Code:

postProcess -latestTime -func 'grad(U)'

After running the above command I get the following warning.

PHP Code:


			
--> FOAM Warning :     functionObjects::grad grad(U) cannot find required object U of type volScalarField

--> FOAM Warning :     functionObjects::grad grad(U) cannot find required object U of type surfaceScalarField

P.s. I am calculating grad(U) to ultimately calculate the turbulent dissipation rate ( $\epsilon$ ). Any help regarding this would be appreciated.

thonix · July 29, 2019, 03:47

Did you include grad functions in your system or controlDict??

Can you snap a shot of them may the problem is including

July 27, 2019, 19:02	Error while postProcessing icoFoam case to get grad(U)	#1
shashanktiwari619 New Member Shashank Join Date: Sep 2014 Posts: 28 Rep Power: 12	I am trying to post-process U data from a simulation in icoFoam to get the grad(U). I use the command Code: postProcess -latestTime -func 'grad(U)' After running the above command I get the following warning. PHP Code: `--> FOAM Warning : functionObjects::grad grad(U) cannot find required object U of type volScalarField --> FOAM Warning : functionObjects::grad grad(U) cannot find required object U of type surfaceScalarField` P.s. I am calculating grad(U) to ultimately calculate the turbulent dissipation rate ( $\epsilon$ ). Any help regarding this would be appreciated.

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July 29, 2019, 03:47		#2
thonix New Member Batuhan Çakar Join Date: Nov 2018 Location: Turkey Posts: 7 Rep Power: 8	Did you include grad functions in your system or controlDict?? Can you snap a shot of them may the problem is including