The experiment shows that by changing the velocity coefficient , the separationofboundarylayer on pump vane can be controlled, and the performance of pump is improved and its hydraulic efficiency.
If the reference separation point approaches the outlet, the test results are satisfactory, which state that the practical position ofboundarylayerseparation point will be close to the outlet.
The basic equations of the boundarylayer for blade surface flow of arbitrary cyclical surface are established, and the rotating effect for boundarylayerseparation is analyzed.