1. 南方科技大学 前沿与交叉科学研究院,深圳,518055
2. 北京师范大学 数学科学学院, 数学与复杂系统教育部重点实验室,北京,100875
3. 香港科技大学 数学系,香港
曹贵瑜(1994-), 男, 河南信阳人, 博士, 研究方向: 气体动理学格式, 湍流模拟和建模.E-mail: caogy@sustech.edu.cn
徐昆(1966-), 教授, 研究方向: 计算流体力学高精度格式, 稀薄气体动理学, 输运问题的多尺度建模等.E-mail: makxu@ust.hk
纸质出版:2021
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曹贵瑜, 潘亮, 徐昆. 高阶气体动理学格式在湍流数值模拟中的应用[J]. 空气动力学学报, 2021, 39(1): 168-176.
CAO Guiyu, PAN Liang, XU Kun. High-order gas-kinetic scheme for numerical simulation of turbulence[J]. 2021, 39(1): 168-176.
曹贵瑜, 潘亮, 徐昆. 高阶气体动理学格式在湍流数值模拟中的应用[J]. 空气动力学学报, 2021, 39(1): 168-176. DOI: 10.7638/kqdlxxb-2020.0156.
CAO Guiyu, PAN Liang, XU Kun. High-order gas-kinetic scheme for numerical simulation of turbulence[J]. 2021, 39(1): 168-176. DOI: 10.7638/kqdlxxb-2020.0156.
本文回顾了高阶气体动理学格式在湍流数值模拟中的应用。与传统的Riemann求解器相比,气体动理学格式可以提供时空耦合的演化过程,这对发展高精度格式十分重要。因此,基于两步四阶时间离散和高精度WENO重构,发展了具有四阶时间精度的气体动理学格式。该格式有更高的数值精度和稳定性,并且具有更好的处理复杂流动问题的能力。目前,两步四阶格式已经成功地应用到低雷诺数湍流直接数值模拟和高雷诺数工程湍流RANS模拟中,包括低速槽道湍流、超声速均匀各向同性衰减湍流、二维亚声速翼型湍流和三维跨声速翼身湍流等。数值结果表明该格式对湍流直接数值模拟和湍流RANS模拟具有高数值精度和高数值稳定性。下一步将利用高阶气体动理学格式研究更具有挑战性的可压缩湍流问题,例如超声速湍流边界层和激波边界相互作用等。
We review the application of high-order gas-kinetic scheme (HGKS) in the numerical simulations of turbulence. HGKS was developed based on the two-stage fourth-order temporal discretization and high-order weighted essentially non-oscillation (WENO) reconstruction. Compared with the classical Riemann solvers
the high-order temporal evolution process
which is extremely helpful in the design of robust
accurate
and efficient higher-order schemes
can be used to construct a spatial-temporal coupled gas-kinetic flux solver. Currently
HGKS has been successfully applied in the direct numerical simulations and Reynolds averaged Navier-Stokes (RANS) simulations of turbulence
including low-speed turbulent channel flows
the decaying supersonic isotropic turbulence
the subsonic NACA0012 airfoil turbulence
and the transonic ARA M100 wing-body turbulence. The numerical results show that HGKS has the high accuracy and outstanding robustness for turbulence simulations. In summary
the HGKS provides a powerful computational tool for studying turbulent flows
especially for compressible turbulence. In the future
more challenging studies will be conducted
including the supersonic turbulent boundary layers and the shock-boundary layer interaction.
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