VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University249710.18287/1998-6629-2014-0-5-1(47)-188-198UnknownModeling of stall cavitation sensitivity of a booster turbopump assembly and comparison between experimental and numerical resultsKazyonnovI. S.<p>Programmer engineer</p>kazyonnov.ivan@gmail.comKanalinU. I.<p>Chief Specialist</p>otd769@mail.ruPoletaevN. P.<p>Leading Design Engineer</p>otd769@mail.ruChernishevaI. A.<p>Head of Sector</p>otd769@mail.ruEnergomash Science and Production Association named after academician V.P. Glushko20122014135-11881981806201518062015Copyright © 2015, VESTNIK of the Samara State Aerospace University2015<p>Nowadays, screw booster pumps (BP) are used in engines of large and small thrust both of Russian andforeign designs to reduce the pressure in the tanks. Cavitation may occur in BPs like in any hydraulic systems.To determine the cavitation characteristics of screw and centrifugal pumps a number of empirical formulas wereobtained which do not fully take into account all the geometrical features of variable-step screws. Various modelsof cavitation are used in CFD programs; cavitation properties of any geometry can be obtained on the basis ofthese models. The paper presents the results of numerical analysis of the cavitating flow in a booster pump andtheir comparison with the experimental ones. Modeling was performed by ANSYS CFX. The cavitation phenomenawere simulated in a stationary approach using the Rayleigh-Plesset model. The geometrical model includedan axial-radial wheel and straightening vanes. The analysis was performed with and without a shroudring, a clearance gap and roughness. 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