Fieldfunction du/dy  du/dx
Hi guys,
I have got a little problem. I want to set up a field function where velocity gradients are included: e.g: du/dx > CCM Code: grad($$Velocity[0]). I think this is for du/dx right, where u is the first component of the velocity vector. How does this work for du/dy or du/dz?? Thanks for help 
Check out the help file:
Using Tools > Using Field Functions > Field Function Programming Reference > Vector Functions, Miscellaneous Functions 
"grad($$Velocity[0])" will get you a vector field function consisting of (du/dx, du/dy, du/dz). If you just want du/dx, then you need to do "grad($$Velocity[0])[0]"
To be clear... du/dx = grad($$Velocity[0])[0] du/dy = grad($$Velocity[0])[1] dv/dx = grad($$Velocity[1])[0] dv/dy = grad($$Velocity[1])[1] dw/dx = grad($$Velocity[2])[0] etc... 
Ah Kyle, thank u! :) This is it what I was looking for....

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