6 papers · 1 filter
A second-order unified gas-kinetic wave-particle method with enhanced mesh independence for hypersonic flows
Junzhe Cao, Rui Zhang, Wenpei Long +2
Benefiting from the direct modeling of physical laws in a discretized space and the automatic decomposition of the gas distribution function into hydrodynamic waves and particles,…
A Time-Domain Harmonic Balance Unified Gas-Kinetic Scheme for Temporally Periodic Flows Across all Knudsen Regimes
Yuze Zhu, Hangkong Wu, Yufeng Wei +1
This paper introduces a time-domain harmonic balance unified gas-kinetic scheme (HB-UGKS) designed to simulate temporally periodic flows across all Knudsen regimes. The harmonic ba…
Revisit viscous shock tube at low Reynolds number
Yue Zhang, Kun Xu
The viscous shock tube is a canonical test case for assessing Navier-Stokes (NS) solvers in the continuum-flow regime, widely used to validate numerical accuracy and probe flow phy…
Unified Gas-Kinetic Scheme for Unsteady Multiscale Flows with Moving Boundaries
Yue Zhang, Wenpei Long, Junzhe Cao +1
Simulating multiscale flows with moving boundaries, such as hypersonic multi-body separation and flows in micro-electro-mechanical systems (MEMS), requires robust numerical methods…
The study of coherent Rayleigh-Brillouin scattering in multiple flow regimes using unified gas-kinetic scheme
Xiaozhe Xi, Junzhe Cao, Kun Xu
Coherent Rayleigh-Brillouin scattering (CRBS) holds great promise for the characterization of gas properties and the investigation of gas kinetic processes. The CRBS spectrum exhib…
Unified gas-kinetic scheme for reactive flow with multi-scale transport and chemical non-equilibrium
Yufeng Wei, Junzhe Cao, Kun Xu
Reactive flows for rarefied gas mixtures involve a multi-scale transport characterized by particle collisions and free streaming, and non-equilibrium physics containing multi-speci…