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相关论文: High-order gas-kinetic scheme with TENO class reco…

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The high-order gas-kinetic scheme (HGKS) features good robustness, high efficiency and satisfactory accuracy,the performaence of which can be further improved combined with WENO-AO (WENO with adaptive order) scheme for reconstruction. To…

流体动力学 · 物理学 2023-04-13 Junlei Mu , Congshan Zhuo , Qingdian Zhang , Sha Liu , Chengwen Zhong

High-order gas-kinetic scheme (HGKS) has been well-developed in the past years. Abundant numerical tests including hypersonic flow, turbulence, and aeroacoustic problems, have been used to validate its accuracy, efficiency, and robustness.…

计算物理 · 物理学 2019-05-22 Xing Ji , Kun Xu

In this paper, a simple and efficient third-order weighted essentially non-oscillatory (WENO) reconstruction is developed for three-dimensional flows, in which the idea of two-dimensional WENO-AO scheme on unstructured meshes…

数值分析 · 数学 2019-09-05 Liang Pan , Kun Xu

The recently proposed high-order TENO scheme [Fu et al., Journal of Computational Physics, 305, pp.333-359] has shown great potential in predicting complex fluids owing to the novel weighting strategy, which ensures the high-order accuracy,…

数值分析 · 数学 2022-05-23 Zhe Ji , Tian Liang , Lin Fu

In this paper, a comparison of the performance of two high-order finite volume methods based on the gas-kinetic scheme (GKS) and HLLC fluxes is carried out in structured rectangular mesh. For both schemes, the fifth-order WENO-AO…

计算物理 · 物理学 2020-09-09 Xiaojian Yang , Xing Ji , Wei Shyy , Kun Xu

In this paper, we present a high-order unified gas-kinetic scheme (UGKS) using the weighted essentially non-oscillatory with adaptive-order (WENO-AO) method for spatial reconstruction and the two-stage fourth-order scheme for time…

计算物理 · 物理学 2022-12-12 Gyuha Lim , Yajun Zhu , Kun Xu

In the previous studies, the high-order gas-kinetic schemes (HGKS) have achieved successes for unsteady flows on three-dimensional unstructured meshes. In this paper, to accelerate the rate of convergence for steady flows, the implicit…

数值分析 · 数学 2024-03-05 Yaqing Yang , Liang Pan , Kun Xu

This paper introduces a memory-reduction third-order compact gas-kinetic scheme (CGKS) for solving compressible Euler and Navier-Stokes equations on 3D unstructured meshes. The scheme utilizes a time-evolution gas distribution function to…

数值分析 · 数学 2024-08-21 Hongyu Liu , Xing Ji , Yunpeng Mao , Zhe Qian , Kun Xu

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

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

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

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

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

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

In this paper, we develop two finite difference weighted essentially non-oscillatory (WENO) schemes with unequal-sized sub-stencils for solving the Degasperis-Procesi (DP) and $\mu$-Degasperis-Procesi ($\mu$DP) equations, which contain…

数值分析 · 数学 2022-03-14 Jianfang Lin , Yan Yu , Huiwen Xue , Xinghui Zhong

In this paper, a third order gas kinetic scheme is developed on the three dimensional hybrid unstructured meshes for the numerical simulation of compressible inviscid and viscous flows. A third-order WENO reconstruction is developed on the…

数值分析 · 数学 2022-04-18 Yaqing Yang , Liang Pan , Kun Xu

Recently, the targeted ENO (TENO) schemes give a novel framework to keep optimal high-order spatial reconstruction wherever discontinuity is deemed to be vanished, including at smooth critical points, and to avoid oscillations by completely…

计算物理 · 物理学 2018-11-07 Fan Zhang , Jun Liu , Huaibao Zhang , Chunguang Xu

We develop a high-order kinetic scheme for entropy-based moment models of a one-dimensional linear kinetic equation in slab geometry. High-order spatial reconstructions are achieved using the weighted essentially non-oscillatory (WENO)…

数值分析 · 数学 2019-08-27 Florian Schneider , Graham Alldredge , Jochen Kall

In this paper, a new family of very-high-order TENO schemes with adaptive accuracy order and adaptive dissipation control (TENO-AA) is proposed. The new framework allows for constructing arbitrarily high-order TENO schemes in a unified…

流体动力学 · 物理学 2021-09-30 Lin Fu

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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