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| A HFS Solver for Simulation of Fluctuation Pressure in Compressible Flow |
| Received:February 04, 2021 Revised:February 16, 2021 |
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| DOI：10.7643/issn.1672-9242.2021.03.004 |
| KeyWord:hypersonic flow fluctuation pressure direct numerical simulation |
| Author | Institution |
| ZHOU Lin |
Institute of System Engineering, China Academy of Engineering Physics, Mianyang , China |
| SHEN Yi |
Institute of System Engineering, China Academy of Engineering Physics, Mianyang , China |
| GE Ren-wei |
Institute of System Engineering, China Academy of Engineering Physics, Mianyang , China |
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| Abstract: |
| The flow on the surface of high-speed aircraft is mainly characterized by turbulence and transition. The purpose of this study is to develop a high order precision compressible flow solver (HFS) to investigate the pressure fluctuations in compressible flow around a blunt-body. The compressible Navier-Stokes equations are solved in the general curvilinear coordinate system. High order WCNS-E scheme is used for the spatial discretization in order to capture shock waves. With large-scale parallel computation, high fidelity data of hypersonic flow over a blunt body can be obtained by DNS. The Blast wave test results show that the simulation results using different WCNS formats are in good agreement with the reference solution. The calculation results of the impact on the NACA0012 airfoil surface by HFS simulation are in good agreement with the calculation results of NASA's OVERFLOW program and the experimental results. Typical test cases show that HFS can stably and accurately capture strong discontinuities, and can also accurately calculate flow fields with complex geometric configurations. The HFS is used to study the flow around the blunt cone, and the flow phenomena in the blunt-body boundary layer, such as laminar flow, transition and fully developed turbulence are captured, and the temporal and spatial distribution of wall fluctuation pressure is obtained. |
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