[Mojtaba.a]

Hello guys,

I was taking a look at the postProcess functionality and trying out the new div function to compute the divergence field of the velocity.

I did that quite well by adding the linear scheme to my fvSchemes file:

div(U)      Gauss linear;

However, when I try to use the upwind scheme:

div(U)      Gauss upwind;

I get the following error:

No finite volume options present
--> FOAM Warning :
--> FOAM FATAL IO ERROR:
wrong token type - expected word, found on line 39: label 1

Why is it unable to compute the divergence of U with this scheme (More broadly it cannot be computed by any other schemes except the linear ones)

Best.

[HPE]

Could you please post a MWE, so that we can reproduce the error?

[Mojtaba.a]

Originally Posted by HPE

Could you please post a MWE, so that we can reproduce the error?

Sure. You can download the attached case.

Reproduce the issue by running the following commands in OF 6:

pisoFoam
postProcess -func "div(U)"

It works fine. Now go to the fvSchemes file and change the div(U) scheme into

div(U)       Gauss upwind;

Also, you may notice a warning when running the div function where it says it can't find the surfaceScalarField of U. Again, I have no idea why it searches for the surfaceScalarField.

[Mojtaba.a]

Any thoughts on this?

[HPE]

after Easter