A low-dissipation scheme based on OpenFoam designed for large eddy simulation in compressible flow

	A low-dissipation scheme based on OpenFoam designed for large eddy simulation in compressible flow
	Lee YC ; Yao W(姚卫); Fan XJ(范学军); Yao, Wei(weiyao@imech.ac.cn)
会议录名称	21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017
	2017
会议名称	21st AIAA International Space Planes and Hypersonics Technologies Conference
会议日期	6-9 March 2017
会议地点	Xiamen, China
摘要	To improve the large eddy simulation鈥檚 ability of simulating complex flow fields in the scramjet, a low-dissipation solver has been developed based on the original compressible solver rhoCentralFoam within the free open source computational fluid dynamics software OpenFOAM platforms. In rhoCentralFoam, the central-upwind scheme of Kurganov and Tadmor (Kurganov-Tadmor scheme) is applied to capture the flow discontinuity, whose dissipation is too strong to resolve turbulence under finite resolution. The low-dissipation solver adopts a new hybrid scheme, which combines the dissipative Kurganov-Tadmor scheme with the nondissipative central scheme through the shock sensor, where the dissipative scheme is used to capture the flow discontinuity near shock wave and the central scheme is used to resolve the turbulence structure in the smooth flow area. In the framework of unstructured mesh algorithm, the central scheme is extended from linear order to forth order, which greatly reduces the dispersion error and weakens the oscillations near flow discontinuity. To keep the numerical stability of the central scheme, we adopt the skew-symmetric form of the convective term, which could be able to preserve the local kinetic energy and help keep the self-stability of central scheme without adding an explicit dissipative term. In addition, a low-storage TVD Runge-Kutta method for third order temporal discretization is newly implemented in the low-dissipation solver to make the time marching in order to meet the requirement of large eddy simulation. A series of benchmark problems, such as Sod shock tube test, Shu-Osher problem, Green-Taylor vortex evolution, and wall-bounded turbulence generation based on synthetic eddy method, are computed and compared to examine the low-dissipation solver鈥檚 ability of capturing flow discontinuity as well as resolving turbulence structure. The accuracy and stability of the low-dissipation solver are further validated against experimental data when the supersonic airstream flows past the flame holder structure in the scramjet model. 漏 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
关键词	Computational Fluid Dynamics Computer Software Digital Storage Kinetic Energy Kinetics Open Source Software Open Systems Runge Kutta Methods Shock Tubes Shock Waves Spacecraft Turbulence Two Phase Flow
ISBN号	978-1-62410-463-3
URL	查看原文
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/72182
专题	高温气体动力学国家重点实验室
通讯作者	Yao, Wei(weiyao@imech.ac.cn)
作者单位	1. State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, CAS, Haidian District, Beijing 2.190, China (2) College of Engineering Science, Chinese Academy of Sciences, Beijing 3.100049, China
推荐引用方式 GB/T 7714	Lee YC,Yao W,Fan XJ,et al. A low-dissipation scheme based on OpenFoam designed for large eddy simulation in compressible flow[C]21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017,2017.

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