Uncoupled method for numerical simulation of the nonequilibrium flow in COIL

作者：Zhang Li^*; Ye Zheng Yin; Wang Gang

来源：Acta Aerodynamica Sinica, 2008, 26(2): 227-230.

• Continuity equations
• Finite-rate chemistry
• Nonequilibrium flows
• Numerica l results
• Numerical simulations
• Perfect gases
• Reynolds Averaged Navier Stokes Equations (RANSE)
• Runge-Kutta
• Semi implicit methods
• Time-stepping schemes

An uncoupled method was introduced to simulate numerically nonequilibrium flow which had the stiffness problem. Mixing reaction flows in COIL are simulated by solving the Reynolds averaged Navier-Stokes equations and species continuity equations. Equations are solved using four-stage Runge-Kutta time-stepping scheme on structured viscous mesh. The simulations are carried out with AUSM+up scheme. The method employs finite-rate chemistry and thermodynamic perfect gas properties for chemical reaction. The stiffness problem of chemical source is overcome by a semi-implicit method. The COIL numerical results are in good agreement with the results of AeroSoft';s GASP[8].

• 出版日期2008
• 单位西北工业大学