Variational multiscale framework for cavitating flows

被引：27
作者：
Bayram, A. [1 ]
Korobenko, A. [1 ]
机构：
[1] Univ Calgary, Dept Mech & Mfg Engn, Calgary, AB T2N 1N4, Canada
来源：
COMPUTATIONAL MECHANICS | 2020年 / 66卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Cavitation; Navier-Stokes; Finite elements; ALE-VMS; Sliding interface; Hydrokinetic turbines; FLUID-STRUCTURE INTERACTION; DEPENDENT BOUNDARY-CONDITIONS; FINITE-ELEMENT FORMULATIONS; TIME COMPUTATIONAL ANALYSIS; FLAPPING-WING AERODYNAMICS; DRIVEN STRING DYNAMICS; ISOGEOMETRIC ANALYSIS; FSI ANALYSIS; BLOOD-FLOW; GEOMETRICAL-CHARACTERISTICS;
D O I：
10.1007/s00466-020-01840-2
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
A numerical formulation for the modeling of turbulent cavitating flows is presented. The flow field is governed by the 3D, time-dependent Navier-Stokes equations for a compressible isothermal mixture. The Arbitrary Lagrangian-Eulerian Variational Multiscale (ALE-VMS) formulation is adopted to model the turbulent flow on moving domains with no-slip boundary conditions imposed weakly. The formulation is first tested on the cavitating flow over a 2D NACA0012 airfoil and compared to published numerical results. Next, the framework is applied to the benchmark problem for the flow over a hemispherical fore-body. The numerical results are compared to the reported experimental data, showing a good agreement over the range of cavitation numbers. Finally, the simulation of a hydrokinetic turbine in cavitating flow at a low cavitation number is presented in order to test the stability of the formulation and the capability to handle real engineering problems involving turbulent cavitating flows on moving domains.
引用
收藏
页码：49 / 67
页数：19
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