[yp5547]

Hi everyone,
I need your help.
I'd like to solve the gradient of a scalar, which can be calculated through stress that fluent has solved. now I'd like to look for the solutions for the scalar gradient.I'm setting up the UDS, but not open the UDS equation solver. and then use UDSI_G to solve the gradient.that is ok?
What is the principle of fluent solving the gradient?
What is the difference between _G and _RG?
Would I use the C_UDSI_G (c, bottom) to only sovle the boundary gradient adjacent to the first layer of the grid? And when grid has moved by dynamic meshing, it can solve rightly?
Thank everyone very much! merry christmas!