6 papers
The extended gas-kinetic theory from Pullin equation: the relaxation rates, transport coefficients and model equation
Sha Liu, Ningchao Ding, Ming Fang +4
The Borgnakke-Larsen model, widely used in rarefied flow predictions, serves as the mainstream energy-exchange kernel for polyatomic gases. However, it lacks integrability and does…
Phenomenological energy exchange of diatomic gases: Comparison of Pullin and Borgnakke-Larsen models in direct simulation Monte Carlo method
Hao Jin, Sha Liu, Ningchao Ding +4
In hypersonic rarefied flows, insufficient intermolecular collisions cause significant deviations between translational and rotational temperatures, leading to strong thermal noneq…
A simplified unified wave-particle method for diatomic gases with rotational and vibrational non-equilibrium
Sirui Yang, Chengwen Zhong, Ningchao Ding +4
The hypersonic flow around near-space vehicles constitutes a multi-scale flow problem. Due to insufficient molecular collisions to achieve equilibrium, rarefied gas effects are pre…
A hybrid numerical algorithm based on the stochastic particle Shakhov and DSMC method
Hao Jin, Sha Liu, Sirui Yang +3
The Direct Simulation Monte Carlo (DSMC) method is widely employed for simulating rarefied nonequilibrium gas flows. With advances in aerospace engineering and micro/nano-scale tec…
Simplified unified wave-particle method for diatomic gases based on Rykov model
Sirui Yang, Sha Liu, Junzhe Cao +1
During the past decades, the numerical methods based on Navier-Stokes (N-S) equations and direct simulation Monte Carlo (DSMC) methods have been proved effective in simulating flow…
Hypersonic wave wall flow based on gas kinetic method
Yining Yang, Rui Zhang, Jianfeng Chen +4
The transition of hypersonic boundary layer can lead to a several-fold increase in surface heat flux and skin friction for the aircraft, significantly impacting its flight performa…