[lefuliang]

I am gonna simulate a viscous source flow that going across bumps. The wall of bump is no slip wall and adhesion force should be considered on these bump walls.
The boundaries is shown in fig.1, and the Pre-setting is listed as follow:
1. fluids: two continuous fluid (air, fluid 1:another is viscous fluid 0.8Pa.s), no bouyant;
2. fluid models: standard free surface/homogeneous model, laminar flow, no heat transfer, no combustion;
3. fluid pair models: air|fluid 1, surface tension coefficient:0.033 N/m, continuum surface force, primary fluid: fluid 1, no interphase transfer, no mass transfer;
4. inlet source: fluid 1: 2.6 mg/s;
5. bump wall: no slip wall, wall contact angle: 20 deg;
6. other walls: free slip wall, no wall adhesion;
7. open: static pressure: 0 Pa, normal to boundary;
8. Analysis type: transient, total time: 5 s, adapative timesteps, min timestep:0.0001 s, max timestep: 0.1s;
The solver finished very soon, but the result is totally wrong as fig.2 at 5 second simulation time. The fluid 1 almost stayed in same position as fig.2 during different timesteps and not yet passed one bump, whereas experiment will almost fill the domain.
I really spent plenty of time to find solution, but failed. Could anyone give me some suggestions? Thanks a lot.