Work

Numerical Simulation of Air-He Shock Tube Flow with Equilibrium Air Model

Year: 2012

Type: article

Abstract: In this study, a compressible multicomponent Navier-Stokes flow solver with real gas effect is developed for studying the high-speed flow in an air-He shock tube. For compressible multicomponent flow simulation, a reduced five-equation model in conjunction with the Harten-Lax-van Leer scheme for contact surface approximate Riemann solver is employed. For the real gas effect, a curve-fitting approximation for equilibrium air constructed from Grabau-type transition functions is adopted. In addition, the Baldwin-Lomax turbulence model is used for turbulent flow simulation. In this work, several typical test cases will be demonstrated first. Subsequently, air-He shock tube simulations with the real gas effect will be performed by using parallel computation. Based on the present results, the real gas effect shows significant influence on the temperature behind the reflected shock. In addition, the driver gas contamination and the development of shock bifurcation are presented by flow visualization.

Source: AIAA Journal

DOI: 10.2514/1.j051129

Authors: Hua Chen, Chih-Yung Wen, Chih-Kai Yang

Institutions: University of Kang Ning, Hong Kong Polytechnic University, National Cheng Kung University

Language: English

Topic: Computational Fluid Dynamics and Aerodynamics

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: National Science Council

Awards: G3006427632, G7250587574