NUMERICAL SIMULATION OF VENTILATED CAVITATING FLOW AROUND A 2D FOIL  

作　　者：CHEN Xin LU Chuan-jing 

机构地区：[1]Department of Engineering Mechanics, Shanghai Jiaotong University, Shanghai 200240, China

出　　处：《Journal of Hydrodynamics》2005年第5期607-614,共8页水动力学研究与进展B辑（英文版）

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina(GrantNo:10372061)andtheDoctorFounda-tionofStateMinistryofEducationofChina(GrantNo:20030248001)

摘　　要：By using a pressure-based method and the finite volume method in the framework of the time dependent Reynolds-averaged Navier-Stokes equations, the authors studied the unsteady process of ventilated cavities generated forcing air through an orifice in a 2D hydrofoil without natural cavitation physically. The computation was carried out with the Volume Of Fluid （VOF） technique to track the gas-liquid two-phase interface. The results of simulation indicate that the ventilation rate is an important parameter in determining the morphology of cavity. There exists a critical value to convert sheet cavity into supereavity. A high ventilation rate can induce a two phase interface fluctuation and enable the ventilated eavitating flow to present a characteristic of periodicity.By using a pressure-based method and the finite volume method in the framework of the time dependent Reynolds-averaged Navier-Stokes equations, the authors studied the unsteady process of ventilated cavities generated forcing air through an orifice in a 2D hydrofoil without natural cavitation physically. The computation was carried out with the Volume Of Fluid （VOF） technique to track the gas-liquid two-phase interface. The results of simulation indicate that the ventilation rate is an important parameter in determining the morphology of cavity. There exists a critical value to convert sheet cavity into supereavity. A high ventilation rate can induce a two phase interface fluctuation and enable the ventilated eavitating flow to present a characteristic of periodicity.

关 键 词：ventilated cavity re entrant jet interface fluctuation Volume Of Fluid （VOF） techinique 

分 类 号：O35[理学—流体力学]