...Pascal Munsch; Christian Lehr; Andreas Brümmer; Romuald Skoda A compressible finite volume Navier–Stokes flow solver is coupled to a method of characteristics for the seamless turbulent flow simulation of entire pump systems. For the pump, three-dimensional (3D) simulations including cavitating...

...Xinlong Wang; Jinsong Zhang; Zhenwei Huang; Lucai Wang; Wei Li; Guohui Lan All hydraulic machinery has a tip clearance, which not only produces tip-leakage vortexes (TLVs), but also reduces the energy performance of the machinery. In addition, tip clearance leads to cavitation and attendant...

...Anh Dinh Le The flashing flow in a Moby_Dick converging-diverging nozzle under pressurized hot water from 460.5 to 483.5 K is simulated using a homogeneous compressible water-vapor two-phase flow model. The kinematic and thermodynamic mass transfer are accessed using the cavitation model based...

...Yu Ito It is well known that cavitation breakdown, which is a phenomenon in which the pump head suddenly drops with a decrease in the inlet cavitation number, occurs in turbopumps. Especially in cryogenic pumps, cavitation breakdown occurs at a lower inlet cavitation number than that of ordinary...

...Chang Qiu; Zhi-xin Gao; Zhi-jiang Jin; Jin-yuan Qian The steam trap valve is used in thermal power systems to pour out condensate water and keep steam inside. While flowing through steam trap valves, the condensate water can easily reach cavitation, which may cause serious damage to the piping...

...Enver S. Karakas; Nehir Tokgöz; Hiroyoshi Watanabe; Matteo Aureli; Cahit A. Evrensel This paper investigates and compares four commonly used flow transport equation-based cavitation models and their applicability to predict the cavitation performance of an industrial centrifugal pump with a helical...

...Anh Dinh Le; Hoang Phan Thanh; Hung Tran The The cavitating flow on a NACA0015 hydrofoil in water under a wide range of temperatures is simulated with or without noncondensation gas using a homogeneous model. Our simplified thermodynamic model is coupled with governing equations to capture...

...M. Coussirat; F. Moll Cavitation in pressure injectors/atomizers affects the liquid/spray jet behavior at its outlet. The type of atomization induced by cavitation allows developing efficient devices if this cavitation state is controlled. Cavitating flow is related to turbulent and multiphase...

...Théodore Magne; Richard Paridaens; Sofiane Khelladi; Farid Bakir; Petar Tomov; Loic Pora Inducers in centrifugal pumps are generally placed upstream to increase the pressure before the impeller and prevent cavitation occurrence. Their general goal is to obtain a positive impact on the performances...

.... As an application of the present theory to an inducer representing an axial pump or compressor, the number (N cav ) of “backflow-vortex cavitations,” which occur around the backflow-vortex center, is predicted. Cavitation is visible; therefore, N cav is quantitatively measurable. In the parameter ranges studied...

...Enver S. Karakas; Hiroyoshi Watanabe; Matteo Aureli; Cahit A. Evrensel In this paper, the effect of the inducer tip clearance is studied to understand its impact on the cavitating and noncavitating performance of centrifugal pumps. Helical inducers with constant pitch and with variable (progressive...

...Ying Chen; Zhaoxin Gong; Jie Li; Xin Chen; Chuanjing Lu Cavitation may develop on upward-launched submerged objects approaching sea surface with high speed. In this work, the cavitation shedding and collapse during the water-exit of an axisymmetric projectile is investigated using large eddy...

...Wenguang Li An experimental vortex pump with a specific speed of 76 is investigated to get its performance and flow structure under noncavitation and cavitation conditions when the pump operates as turbine in the reverse direction by using computational fluid dynamics (CFD) method. A method...

...Masoud Khojasteh-Manesh; Miralam Mahdi In the present study, cavitation erosion is investigated by implementing an Eulerian–Lagrangian approach. Three-dimensional two-phase flow is simulated in a microscale nozzle using Reynolds-averaged Navier–Stokes (RANS) solver along with realizable k − ε...

...Anh Dinh Le; Junosuke Okajima; Yuka Iga In industrial applications, cryogenic liquids are sometimes used as the working fluid of fluid machineries. In those fluids, the thermodynamic suppression effect of cavitation, which is normally ignored in water at room temperature, becomes obvious. When...

...Samuel Cruz; Francisco A. Godínez; Margarita Navarrete The hydrodynamic cavitation in a Venturi tube is studied both theoretically and experimentally. A lumped parameter model was developed to describe the accumulation and dissipation of energy in the biphasic flow as a function of the bubble...

...Lei Cao; Ashish Karn; Roger E. A. Arndt; Zhengwei Wang; Jiarong Hong 25 05 2018 06 06 2018 Cavitation Cavity flows The authors regret the following errors: The pressure distribution shown in the original paper should be the relative pressure distribution with respect...

...Aydın Hacı Dönmez; Zehra Yumurtacı; Levent Kavurmacıoğlu The aim of the current study is to investigate the effect of inlet blade angles on cavitation performance in a centrifugal pump. In order to reveal this relationship, both hub and shroud blade angles are considered and a two-phase three...

...Ming Liu; Lei Tan; Shuliang Cao The cavitating flow around the asymmetric leading edge (ALE) 15 hydrofoil is investigated through large eddy simulation with the modified Schnerr–Sauer cavitation model, which considers the effect of noncondensable gas. The statistical average velocity profiles...

...R. Lundgreen; D. Maynes; S. Gorrell; K. Oliphant An inducer is used as the first stage of high suction performance pump. It pressurizes the fluid to delay the onset of cavitation, which can adversely affect performance in a centrifugal pump. In this paper, the performance of a water pump inducer...