Computation of the multiphase stage flow path using the multiphase coefficients

The paper presents the derived refined expressions for computing the local speed coefficient and the local multiphase speed and separation coefficients for the blade hydraulic machines operating on the multiphase mixtures. These coefficients are determined for the flow path elements of a hydraulic machine operating on pure liquid without gas, and are applied in the computation methodology. The local multiphase separation coefficient, taking into account the physicochemical properties, is the relative slip velocity of a single free gas bubble with the diameter of 130 ?m motion in the flow path of a blade hydraulic machine. Presence of a single bubble is not changing the pressure and energy characteristics. This coefficient is of the auxiliary informative nature. The paper proposes a computation algorithm forming the basis of a methodology that makes it possible to assess the flow path efficiency based on the local multiphase coefficients and on the specified operating parameters, as well as to determine its main geometric dimensions.
EDN: TOTAPS, https://elibrary/totaps

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