9 papers · 1 filter
Rigorously justified local time stepping in the unified gas-kinetic wave-particle method for steady multiscale flow simulation
Wenzhi Guo, Junzhe Cao, Wenpei Long +1
Local time stepping (LTS) can accelerate convergence to steady states in kinetic simulations with large variations in the local time steps across the computational domain. When nei…
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,…
Surrogate-Based Aerodynamic Shape Optimization in Multiscale Flows via the Implicit Unified Gas-Kinetic Scheme
Xiaozhe Xi, Wenpei Long, Wenzhi Guo +2
While hypersonic glide vehicles such as the HTV-2 continue to be a focal point in aerospace research, their aerodynamic characteristics in complex near-space environments are not y…
On the Applicability of the Gas-Kinetic Scheme with Kinetic Boundary Conditions for Near-Continuum Hypersonic Flows
Wenpei Long, Junzhe Cao, Yue Zhang +1
Rarefied gas effects are of critical importance for the aerodynamic performance of hypersonic vehicles operating at high altitudes. In these scenarios, conventional computational f…
A unified gas-kinetic wave-particle method for multiscale binary-species gas mixtures
Junzhe Cao, Yufeng Wei, Wenpei Long +2
This paper presents a unified gas-kinetic wave-particle (UGKWP) method for simulating multiscale binary-species gas mixtures. Benefiting from direct modeling in a discretized space…
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…