Based on a liquid lubrication theory,influence of operating parameters and texturing parameters on open force,film stiffness and leakage was numerically investigated.Then upstream and downstream pumping principles of the inclined diamond pores were discussed.Results show that the liquid seal with bidirectional inclined diamond pores had larger hydrodynamic open force,more reliable liquid membrane stability and lower leakage than those with unidirectional.At low speed,bidirectional inclined diamond pores tex...