[aoun]

Hi every one,

I simulate turbulent crossflow around tube bundle (many tubes: 7 rows by 7 columbs) using different turbulence models.

the convergence is very hard since the residual of continuty equation is relatively high 10^-2 ??

who can I getting a fully converged system khowing that I have minimise the under-relaxation factors, modifies the scheme of disretization,

what other things ?

[shk12345]

Originally Posted by aoun

Hi every one,

I simulate turbulent crossflow around tube bundle (many tubes: 7 rows by 7 columbs) using different turbulence models.

the convergence is very hard since the residual of continuty equation is relatively high 10^-2 ??

who can I getting a fully converged system khowing that I have minimise the under-relaxation factors, modifies the scheme of disretization,

what other things ?

Just try to use coupled scheme for discretization it gives the best and fastest convergence

If it is also not working then try to refine your mesh and decrease the squeness of your mesh


hope that helps
shk