A proven reliable method of CFD was applied to study the aerodynamic and regulating performance of a sliding regulation-valve, and the flow field and wall pressure distribution of two kinds of sliding valve was analyzed under different Re, different opening degree and different fluid flow direction. The numerical simulation results show that the flow field is affected by the opening degree and the flow direction, and the open flow field is more gentle than the closed one under the same opening. Under the same flow direction, the vortex appears gradually and increases gradually with the decreas...
