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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (5): 1460-1470.doi: 10.7527/S1000-6893.2014.0282

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Development of 3rd-order HWCNS and its application in hypersonic flow

YAN Zhenguo1, LIU Huayong1, MAO Meiliang1,2, MA Yankai1, ZHU Huajun1   

  1. 1. State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang 621000, China;
    2. State Key Laboratory of Aerodynamics of China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2014-05-06 Revised:2014-10-08 Online:2015-05-15 Published:2014-10-14
  • Supported by:

    National Natural Science Foundation of China (11372342, 11072259, 11301525)

Abstract:

With very high requirements on computation grids, poor stability property and low computational efficiency, the application of high-order schemes to hypersonic flow simulations is greatly constrained. Focusing on these problems, a 3rd-order hybrid cell-node and cell-center weighted compact nonlinear schemes(HWCNS3) is developed. Some improvements are made on the calculation of smoothness indicators and nonlinear weights, resulting in a new scheme named HWCNS3-OP. Spectral properties of different schemes are compared. Discontinuity capturing ability and high frequency waves' capturing ability are evaluated using Lax and Osher-Shu cases. After that HWCNS3-OP is applied to blunt cone and shuttle hypersonic flow simulations to study the prediction accuracy of heat flux and aerodynamic forces in relative practical cases. In these cases, the stability and efficiency property of HWCNS3-OP are investigated in priority. The results indicate that HWCNS3-OP has high resolution and good discontinuity capturing ability, the ability of simulating high frequency waves is improved by 3 times compared with HWCNS3 and by 4 times compared with monotonic upstream-centered scheme for conservation laws(MUSCL), HWCNS3-OP is more stable, and that HWCNS3-OP's computational efficiency is improved by 2-3 times compared with HWCNS of 5th-order. HWCNS3-OP is a high-order scheme suitable for hypersonic flow simulations with complex grids.

Key words: high-order scheme, HWCNS, hypersonic flow, heat flux prediction, computational stability, computational efficiency

CLC Number: