Design and development of homogeneous hybrid solvers on National Numerical Windtunnel (NNW) PHengLEI

CHEN Jianqiang; MA Yankai; MIN Yaobing; ZHAO Zhong; HE Xianyao; HE Kun

doi:10.7638/kqdlxxb-2020.0177

ACTA AERODYNAMICA SINICA > 2020 > 38(6): 1103-1110. > DOI: 10.7638/kqdlxxb-2020.0177

CHEN Jianqiang, MA Yankai, MIN Yaobing, ZHAO Zhong, HE Xianyao, HE Kun. Design and development of homogeneous hybrid solvers on National Numerical Windtunnel (NNW) PHengLEI[J]. ACTA AERODYNAMICA SINICA, 2020, 38(6): 1103-1110. DOI: 10.7638/kqdlxxb-2020.0177

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Design and development of homogeneous hybrid solvers on National Numerical Windtunnel (NNW) PHengLEI

Computational Aerodynamics Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China

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Received Date: September 27, 2020
Revised Date: October 19, 2020
Available Online: January 07, 2021

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Abstract

Abstract

To the complexity of Computational Fluid Dynamics in the future, a framework of hybrid solver has been designed in NNW-PHengLEI software with different solvers on different type of meshes, and the zonal hybrid simulation is achieved. Other than the traditional heterogeneous computing model loose-coupling multi-solver, the homogeneous computing model hybrid solver is designed in NNW-PHengLEI software. The elementary idea of homogeneous computing model with hybrid solver is that, the whole computation zone can be divided into sub-zones filled by different type of meshes, different solvers can be operated according to the mesh, and the information at the interface of different solvers is exchanged by database, so that the salient feature of zonal hybrid solver is tight-coupling computing. The advantages of different solvers on different type of meshes can be promoted by zonal hybrid simulation, and the multidisciplinary solvers can be run on different meshes in the future. The zonal hybrid simulation is a key technique to the multidisciplinary/multi-zone simulations merged together. One example: second order/high order structure solver is run on structure grid, second order unstructured solver on unstructured grid, so that the significant feature of flow can be resolved by high order structure method, and the rest of flow field may be by second order unstructured solver. In this paper the basic concepts of zone and interface involved hybrid simulation are described firstly, and then the data structure and implement strategy are introduced, finally, two supersonic numerical examples 2D cylinder and 3D double ellipsoid cases verify the feasibility of hybrid simulation in NNW-PHengLEI software.
- National Numerical Wind-tunnel,
- PHengLEI software,
- CFD software,
- hybrid simulation

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References (21)

References

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