Re: instability problem

[jepson]

Hi Mathias, rnrnIt is possible to increase the inflow velocity to get the turbulent flow. However, in my opinion, the Reynolds number is identical in both physical field and the lattice field, is it right to fix the Reynolds number?rnrnwhat I want to do is simulate the fluid flow through single fracture with variable aperture and gradient. As in the “”example/forcedPoiseuille””, the body force is applied by f(umax,ix, Nu), how should I do to simulate both the laminar and turbulent flow in such a boundary condition? Is it proper to only increase the body force ?rnrnmany thanksrn Jepson