About the artificial viscous of Roe Scheme
I use Roe scheme to solve the 3D channel flow(Les ,low Mach number with preconditioning).
I find if i use small epson number in artificial viscous term,the flow field will decay.
I think the smaller epson the lower dissipation i have .
Am i right??
But the situation is not what i think.
Could someone give me some suggestions ?
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