...Alvaro Pardo-Vigil; Adrián Pandal; José González Pérez Purpose Cavitation prediction in centrifugal pumps relies on the use of multiphase computational fluid dynamics ( CFD ). Analytical models represent cost-efficient alternatives but remain largely confined to planar, simplified blade geometries...

...Haozhe Jin; Ruoshuang Wen; Chao Wang; Xiaofei Liu Purpose The purpose of this study is to determine the cavitation flow characteristics of the high-pressure differential control valve. The relationship between cavitation, flow coefficient and spool angle is obtained. By analyzing the relationship...

...P.K. Ullas; Dhiman Chatterjee; S. Vengadesan Purpose Understanding the interaction of turbulence and cavitation is an essential step towards better controlling the cavitation phenomenon. The purpose of this paper is to bring out the efficacy of different modelling approaches to predict turbulence...

... with the assumption of different models. The Singhal cavitation model and the models which resolve the non-condensable gas including 2phases and 3phases are implemented in the numerical model. The calculations are performed with the uRANS model with assumption of the constant temperature of the mixture. The two-phase...

...Rahmat Ellahi; Ahmad Zeeshan; Farooq Hussain; Mohammad Reza Safaei Purpose The purpose of this study is to investigate the monodisperse cavitation of bubbly mixture flow for water and hydrogen mixture flows through a nozzle having a stenosis on the wall. Design/methodology/approach Two flow...

...Chunlei Shao; Zhongyuan Zhang; Jianfeng Zhou Purpose The purpose of this paper is to accurately predict the cavitation performance of a cryogenic pump and reveal the influence of the inlet pressure, the surface roughness and the flow rate on the cavitation performance. Design/methodology...

...Eric Goncalves; Dia Zeidan Purpose The aim of this work is to quantify the relative importance of the turbulence modelling for cavitating flows in thermal regime. A comparison of various transport-equation turbulence models and a study of the influence of the turbulent Prandtl number appearing...

... of an acoustic bubble were performed based on the polytropic approximation or pressure uniformity models of the contents inside the bubble. In this study, an enhanced numerical model is developed to study the acoustic cavitation phenomenon and the enhancement concerns taking into account both the pressure...

...Jian Wang; Yong Wang; Houlin Liu; Haoqin Huang; Linglin Jiang Purpose – The purpose of this paper is to study the unsteady caivitating flows in centrifugal pump, especially for improving the turbulence model to obtain highly resolution results-capable of predicting the cavitation inception...

...Desheng Zhang; Weidong Shi; Dazhi Pan; Guangjian Zhang Purpose – The purpose of this paper is to predict the unstable cavitation shedding flow around a 2D Clark-y hydrofoil. Design/methodology/approach – The paper studies Partially Averaged Navier-Stokes (PANS) model which was employed...

...Ignacijo Biluš; Andrej Predin Purpose The purpose of the paper is numerical simulation and experimental analysis of a cavitation operating regime in a centrifugal water pump. The main goal is to extend the mathematical model to be able to predict the phenomena where thermodynamic process...

...Ignacijo Bilus; Andrej Predin Purpose This study aims to present the analysis of methods for cavitaion surge obstruction in water pump systems with particular focus on the two different inlet geometry configurations. Design/methodology/approach A cavitating flow field was simulated by RANS...

... the question that probably the flow undergoes a transition from laminar to turbulent as Re is increased above 5,000. This information has led to the further investigation of unsteady‐state lid driven cavity problem. Dynamics Cavitation Numerical analysis i=x‐direction...

...Sunil Mathew; Theo G. Keith, Jr; Efstratios Nikolaidis Purpose The purpose is to present a new approach for studying the phenomenon of traveling bubble cavitation. Design/methodology/approach A flow around a rigid, 2D hydrofoil (NACA‐0012) with a smooth surface is analyzed computationally...

.../m³ ψ stream function (u=∂ψ/∂y,v=−∂ψ/∂x), m²/s El Hassan Ridouane can be contacted at: eridouan@cems.uvm.edu © Emerald Group Publishing Limited 2006 Cavitation Numerical analysis Convection Heat transfer...

... components Convection Cavitation Optimization techniques A=aspect ratio of cavity, H/W c_p=specific isobaric heat capacity, J/kg C g=acceleration of gravity, m/s² h=local convective coefficient of internal fluid, W...

...T.S. Lee; Y.G. Liu; S.H. Winoto Numerical studies are carried out to investigate the liquid‐lubricated herringbone‐grooved journal bearings (HGJBs) performance (such as the pressure and cavitation distribution, load capacity and attitude angle, stability, etc.). Symmetrical and non‐symmetrical...

...‐dimensional temperature difference γ=ratio of the specific heat capacities μ=dynamic viscosity Ψ=dimensionless stream function ρ=density © MCB UP Limited 2003 Convection Cavitation Temperature distribution Flow C_p=specific...

...Spyros A. Kinnas; Yin L. Young Boundary element method (BEM) techniques for the prediction of cavitating or ventilated flows around hydrofoils and propeller are summarized. Classical, supercavitating, and ventilated blade section geometries are considered. Recent extensions which allow...