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相关论文: A two stage fourth-order gas-kinetic scheme on uns…

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For the one-stage third-order gas-kinetic scheme (GKS), success applications have been achieved for the three-dimensional compressible flow computations [33]. The high-order accuracy of the scheme is obtained directly by integrating a…

数值分析 · 数学 2019-02-20 Liang Pan , Kun Xu

For computational fluid dynamics (CFD), the generalized Riemann problem (GRP) solver and the gas-kinetic kinetic scheme (GKS) provide a time-accurate flux function starting from a discontinuous piecewise linear flow distributions around…

数值分析 · 数学 2016-10-12 Liang Pan , Kun Xu , Qibing Li , Jiequan Li

In this paper, a fourth-order compact gas-kinetic scheme (GKS) is developed for the compressible Euler and Navier-Stokes equations under the framework of two-stage fourth-order temporal discretization and Hermite WENO (HWENO)…

计算物理 · 物理学 2020-09-08 Xing Ji , Liang Pan , Wei Shyy , Kun Xu

In this paper, a third-order compact gas-kinetic scheme (GKS) on unstructured tetrahedral mesh is constructed for the compressible Euler and Navier-Stokes solutions. The time-dependent gas distribution function at a cell interface is used…

计算物理 · 物理学 2021-02-03 Xing Ji , Fengxiang Zhao , Wei Shyy , Kun Xu

The high-order gas-kinetic scheme (HGKS) has achieved success in simulating compressible flow in Cartesian mesh. To study the flow problem in general geometry, such as the flow over a wing-body configuration, the development of a…

数值分析 · 数学 2024-12-20 Liang Pan , Kun Xu

Most high order computational fluid dynamics (CFD) methods for compressible flows are based on Riemann solver for the flux evaluation and Runge-Kutta (RK) time stepping technique for temporal accuracy. The main advantage of this kind of…

计算物理 · 物理学 2018-01-17 Xing Ji , Fengxiang Zhao , Wei Shyy , Kun Xu

In this paper, a third-order compact gas-kinetic scheme is firstly proposed for three-dimensional computation for the compressible Euler and Navier-Stokes solutions. The scheme achieves its compactness due to the time-dependent gas…

计算物理 · 物理学 2020-09-08 Xing Ji , Fengxiang Zhao , Wei Shyy , Kun Xu

A general framework for the development of high-order compact schemes has been proposed recently. The core steps of the schemes are composed of the following. 1). Based on a kinetic model equation, from a generalized initial distribution of…

流体动力学 · 物理学 2022-08-25 Fengxiang Zhao , Xing Ji , Wei Shyy , Kun Xu

The Gas-Kinetic Scheme (GKS), widely used in computational fluid dynamics for simulating hypersonic and other complicated flow phenomena, is extended in this work to electromagnetic problems by solving Maxwell's equations. In contrast to…

数值分析 · 数学 2026-01-01 Zhigang Pu , Wenpei Long , Kun Xu

A highly efficient gas-kinetic scheme with fourth-order accuracy in both space and time is developed for the Navier-Stokes equations on triangular meshes. The scheme combines an efficient correction procedure via reconstruction (CPR)…

数值分析 · 数学 2020-10-20 Chao Zhang , Qibing Li , Z. J. Wang , Jiequan Li , Song Fu

For the simulations of unsteady flow, the global time step becomes really small with a large variation of local cell size. In this paper, an implicit high-order gas-kinetic scheme (HGKS) is developed to remove the restrictions on the time…

数值分析 · 数学 2024-03-04 Yaqing Yang , Liang Pan , Kun Xu

To meet the demand for complex geometries and high resolutions of small-scale flow structures, a two-stage fourth-order subcell finite volume (SCFV) method combining the gas-kinetic solver (GKS) with subcell techniques for compressible…

数值分析 · 数学 2022-01-05 Chao Zhang , Qibing Li , Peng Song , Jiequan Li

As an extension of previous fourth-order compact gas kinetic scheme (GKS) on structured meshes (Ji et al. 2018), this work is about the development of a third-order compact GKS on unstructured meshes for the compressible Euler and…

计算物理 · 物理学 2019-02-15 Xing Ji , Fengxiang Zhao , Wei Shyy , Kun Xu

In this paper, the discontinuous Galerkin based high-order gas-kinetic schemes (DG-HGKS) are developed for the three-dimensional Euler and Navier-Stokes equations. Different from the traditional discontinuous Galerkin (DG) methods with…

数值分析 · 数学 2022-03-01 Yuhang Wang , Liang Pan

The gas-kinetic scheme(GKS) is a promising computational fluid dynamics (CFD) method for solving the Navier-Stokes equations. It is based on the analytical solution of the BGK equation, which enables accurate and robust simulations. While…

流体动力学 · 物理学 2025-08-12 Yue Zhang , Xing Ji , Kun Xu

For the two-layer shallow water equations, a high-order compact gas-kinetic scheme (GKS) on triangular mesh is proposed. The two-layer shallow water equations have complex source terms in comparison with the single layer equations. The main…

数值分析 · 数学 2023-06-08 Fengxiang Zhao , Jianping Gan , Kun Xu

In this paper, we present an advanced high-order compact gas-kinetic scheme (CGKS) for 3D unstructured mixed-element meshes, augmented with a geometric multigrid technique to accelerate steady-state convergence. The scheme evolves…

计算物理 · 物理学 2024-02-06 Hongyu Liu , Xing Ji , Yunpeng Mao , Yuan Ding , Kun Xu

In this paper, for the first time a compact third-order gas-kinetic scheme is proposed on unstructured meshes for the compressible viscous flow computations. The possibility to de sign such a third-order compact scheme is due to the…

数值分析 · 数学 2016-06-22 Liang Pan , Kun Xu

This paper extends the high-order compact gas-kinetic scheme (CGKS) to compressible flow simulations on a rotating coordinate frame. The kinetic equation with the inclusion of centrifugal and Coriolis acceleration is used in the…

计算物理 · 物理学 2022-11-01 Yue Zhang , Xing Ji , Kun Xu

In this paper an even higher-order compact GKS up to sixth order of accuracy will be constructed for the shock and acoustic wave computation on unstructured mesh. The compactness is defined by the physical domain of dependence for an…

数值分析 · 数学 2020-10-20 Fengxiang Zhao , Xing Ji , Wei Shyy , Kun Xu
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