Computation of conditions cavitation and cavitation erosion in the diffusions behind outlet

Abstract

     The diffusions are arranged behind outlet  have downward is flowing bottom (throught drainage). Therefore the flow regime around the the diffusions are not convenient so very likely to occur cavitation. In this paper presents methods of calculation arising cavitation, and cavitation erosion  in the diffusions of abutment of trapezoidal cross-section, corresponding to the unit-flow and the total energy - flow. From that may be built  the chart to determine the status of cavitation at diffusions, that is the basis for the selection of a reasonable solution for device after drainage works.