| Citation: | ZHANG Zhuang, WANG Xuede. A general coupled CFD/DSMC method for complex interfaces[J]. Journal of Aerospace Power, 2025, 40（3）：20230380 doi: 10.13224/j.cnki.jasp.20230380
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For the continuum/rarefied hybrid flow field formed by hypersonic aircraft in near-space, the DSMC (direct simulation Monte Carlo) method requires significant computational resources, while the CFD (computational fluid dynamics) method cannot accurately simulate rarefaction effects. Based on in-depth research on the coupling algorithm for continuous/rarefied flows, an unstructured grid coupled CFD/DSMC method was proposed. This method had the characteristics of strong universality and good adaptability, and there was no need to smooth the irregular complex interface when coupling calculation was carried out. Simulations of hypersonic flow around a circular cylinder and blunt cone were performed, and the numerical results demonstrated that the method is highly applicable to irregular interfaces and complex geometries. The effectiveness and computational efficiency of the method were validated by comparing the results with those obtained using overlapping grids. Compared with traditional DSMC methods, the computational efficiency of the two test cases was improved by factors of 2.3 and 3.16, respectively.
| [1] |
李中华,党雷宁,李志辉. 高超声速化学非平衡流动Navier-Stokes/DSMC耦合算法[J]. 航空学报,2018,39(10): 95-106. LI Zhonghua,DANG Leining,LI Zhihui. Navier-Stokes/DSMC hybrid algorithm for hypersonic flows with chemical non-equilibrium[J]. Acta Aeronautica et Astronautica Sinica,2018,39(10): 95-106. (in Chinese
LI Zhonghua, DANG Leining, LI Zhihui. Navier-Stokes/DSMC hybrid algorithm for hypersonic flows with chemical non-equilibrium[J]. Acta Aeronautica et Astronautica Sinica, 2018, 39(10): 95-106. (in Chinese)
|
| [2] |
HASH D B,HASSAN H A. Assessment of schemes for coupling Monte Carlo and Navier-Stokes solution methods[J]. Journal of Thermophysics and Heat Transfer,1996,10(2): 242-249. doi: 10.2514/3.781
|
| [3] |
SUN Quanhua,BOYD I D,CANDLER G V. A hybrid continuum/particle approach for modeling subsonic,rarefied gas flows[J]. Journal of Computational Physics,2004,194(1): 256-277. doi: 10.1016/j.jcp.2003.09.005
|
| [4] |
WADSWORTH D,ERWIN D. One-dimensional hybrid continuum/particle simulation approach for rarefied hypersonic flows[R]. AIAA1990-1690,1990.
|
| [5] |
WADSWORTH D,ERWIN D. Two-dimensional hybrid continuum/particle approach for rarefied flows[R]. AIAA1992-2975,1992.
|
| [6] |
CARLSON H,ROVEDA R,BOYD I,et al. A hybrid CFD-DSMC method of modeling continuum-rarefied flows[R]. AIAA2004-1180,2004.
|
| [7] |
张赛文. 基于N-S/DSMC耦合算法的喷管跨流域流动模拟[D]. 哈尔滨: 哈尔滨工程大学,2018. ZHANG Saiwen. Simulation of nozzle cross-basin flow based on N-S/DSMC coupling algorithm[D]. Harbin: Harbin Engineering University,2018. (in Chinese
ZHANG Saiwen. Simulation of nozzle cross-basin flow based on N-S/DSMC coupling algorithm[D]. Harbin: Harbin Engineering University, 2018. (in Chinese)
|
| [8] |
EGGERS J,BEYLICH A. New algorithms for application in the direct simulation Monte Carlo method[J]. Progress in Astronautics and Aeronautics,1994,159: 166-173.
|
| [9] |
王学德. 高超声速稀薄气流非结构网格DSMC及并行算法研究[D]. 南京: 南京航空航天大学,2006. WANG Xuede. Research on unstructured grid DSMC and parallel algorithm of hypersonic rarefied air flow[D]. Nanjing: Nanjing University of Aeronautics and Astronautics,2006. (in Chinese
WANG Xuede. Research on unstructured grid DSMC and parallel algorithm of hypersonic rarefied air flow[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2006. (in Chinese)
|
| [10] |
STEGER J L,DOUGHERTY F C,BENEK J A. A chimera grid scheme[R]. Houston,US: ASME Mini-Symposium on Advances in Grid Generation,1982.
|
| [11] |
WU Ziniu,XU Shanshu,GAO Bo,et al. Review of numerical computation of compressible flows with artificial interfaces[J]. Computers & Fluids,2007,36(10): 1657-1679.
|
| [12] |
XU Xiao,WANG Xuede,ZHANG Mu,et al. A parallelized hybrid N-S/DSMC-IP approach based on adaptive structured/unstructured overlapping grids for hypersonic transitional flows[J]. Journal of Computational Physics,2018,371: 409-433. doi: 10.1016/j.jcp.2018.05.021
|
| [13] |
WANG Wenlan,BOYD I. Hybrid DSMC-CFD simulations of hypersonic flow over sharp and blunted bodies[R]. AIAA2003-3644,2003.
|
| [14] |
WANG Wenlan,SUN Quanhua,BOYD I. Towards development of a hybrid DSMC-CFD method for simulating hypersonic interacting flows[R]. AIAA2002-3099,2002.
|
| [15] |
BLAZEK J. Spatial discretisation[M]//Computational fluid dynamics: principles and applications. Amsterdam: Netherlands: Elsevier,2001: 129-179.
|
| [16] |
BIRD G A. Molecular gas dynamics and the direct simulation of gas flows[M]. Oxford,UK: Clarendon Press,1994.
|
| [17] |
CHAPMAN S,COWLING T G. The mathematical theory of non-uniform gases[M]. 3nd ed. Cambridge,UK: Cambridge University Press,1970.
|
| [18] |
谢东. 非高超声速火星大气反应流场的DSMC方法研究及应用[D]. 南京: 南京理工大学,2022. XIE Dong. Research and application of DSMC method for non-hypersonic Mars atmospheric reaction flow field[D]. Nanjing: Nanjing University of Science and Technology,2022. (in Chinese
XIE Dong. Research and application of DSMC method for non-hypersonic Mars atmospheric reaction flow field[D]. Nanjing: Nanjing University of Science and Technology, 2022. (in Chinese)
|
| [19] |
许啸. 连续/稀薄混合流场动态重叠网格CFD/DSMC耦合方法研究[D]. 南京: 南京理工大学,2015. XU Xiao. The research on the dynamic overset grid coupled CFD/DSMC method of the hybrid continuum/rarefied flow field[D]. Nanjing: Nanjing University of Science and Technology,2015. (in Chinese
XU Xiao. The research on the dynamic overset grid coupled CFD/DSMC method of the hybrid continuum/rarefied flow field[D]. Nanjing: Nanjing University of Science and Technology, 2015. (in Chinese)
|
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