Unified gas-kinetic wave-particle methods I: Continuum and rarefied gas flow
Chang Liu,Yajun Zhu,Kun Xu +2 more
TLDR
In this article, a multiscale unified gas-kinetic wave-particle (UGKWP) method is proposed for the simulation of hypersonic flow in all regimes.About:
This article is published in Journal of Computational Physics.The article was published on 2020-01-15 and is currently open access. It has received 44 citations till now. The article focuses on the topics: Knudsen number & Laminar flow.read more
Citations
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Can we find steady-state solutions to multiscale rarefied gas flows within dozens of iterations?
TL;DR: A general synthetic iteration scheme (GSIS) to find the steady-state solutions of general rarefied gas flows within dozens of iterations at any Knudsen number, which is expected to accelerate the slow convergence in simulation of near-continuum flows via the direct simulation Monte Carlo method and its low-variance version.
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An efficient lattice Boltzmann method for compressible aerodynamics on D3Q19 lattice
TL;DR: An efficient lattice Boltzmann model relying on a hybrid recursive regularization (HRR) collision operator on D3Q19 stencil is proposed for the simulation of three-dimensional high-speed compressible flows in both subsonic and supersonic regimes to reduce the complexity of correcting terms.
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Progress of discrete unified gas-kinetic scheme for multiscale flows
Zhaoli Guo,Kun Xu +1 more
TL;DR: The discrete unified gas kinetic scheme (DUGKS) as mentioned in this paper is a recently developed numerical approach for simulating multiscale flows based on kinetic models, which can capture the flow behaviors in all regimes without resolving the kinetic scale.
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Unified gas-kinetic wave-particle methods III: Multiscale photon transport
TL;DR: In this article, the authors extended the unified gas-kinetic waveparticle (UGKWP) method to multiscale photon transport by treating the photon free streaming and scattering processes in an unsplitting way.
References
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A Model for Collision Processes in Gases. I. Small Amplitude Processes in Charged and Neutral One-Component Systems
TL;DR: In this paper, a kinetic theory approach to collision processes in ionized and neutral gases is presented, which is adequate for the unified treatment of the dynamic properties of gases over a continuous range of pressures from the Knudsen limit to the high pressure limit where the aerodynamic equations are valid.
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Efficient Asymptotic-Preserving (AP) Schemes For Some Multiscale Kinetic Equations
TL;DR: It is observed that the combination of the two time-split steps may yield hyperbolic-parabolic systems that are more advantageous, in both stability and efficiency, for numerical computations.
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Discrete-Velocity Models and Numerical Schemes for the Boltzmann-BGK Equation in Plane and Axisymmetric Geometries
TL;DR: A linearized implicit scheme for computing stationary solutions of the discrete-velocity BGK and BGK-ES models is developed, which is the basis of a code which can compute high altitude hypersonic flows, in 2D plane and axisymmetric geometries.
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Discrete unified gas kinetic scheme for all Knudsen number flows: Low-speed isothermal case
Zhaoli Guo,Kun Xu,Ruijie Wang +2 more
TL;DR: Numerical results demonstrate that accurate solutions in both continuum and rarefied flow regimes can be obtained from the current DUGKS.
Related Papers (5)
A unified gas-kinetic scheme for continuum and rarefied flows IV
Discrete unified gas kinetic scheme for all Knudsen number flows: Low-speed isothermal case
Zhaoli Guo,Kun Xu,Ruijie Wang +2 more