Re: About ConvectionBC

[steed188]

Dear Marc,

In my experience of other CFD codes, gradient zero BC usually means only the gradient in the mainstream direction is zero, while other directions are not . If I pointed uAv the convection BC will make the velocity uniform, is it still a gradient zero BC? But if I did not point the uAv, the simulation could not go on.

And the periodic BC is not fitting for my case because the inlet of my case is fixed.

Is there any other method to solve the problem?

with best wishes,
steed188