Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary Method
In the previously developed ghost fluid methods (GFMs), the focus is often on the fluid-fluid interface. Based on this method, a ghost immersed boundary method for investigating complex shock-obstacle interactions with strong discontinuity was presented. The values of the fluid variables at the embe...
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| Format: | Article |
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China Astronautic Publishing CO., LTD. ; Editorial Office of Physics of Gases
2025-07-01
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| Series: | 气体物理 |
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| Online Access: | http://qtwl.xml-journal.net/cn/article/doi/10.19527/j.cnki.2096-1642.1125 |
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| author | Jianxin ZHANG Hong CHEN Conglin LIU Ge WANG |
| author_facet | Jianxin ZHANG Hong CHEN Conglin LIU Ge WANG |
| author_sort | Jianxin ZHANG |
| collection | DOAJ |
| description | In the previously developed ghost fluid methods (GFMs), the focus is often on the fluid-fluid interface. Based on this method, a ghost immersed boundary method for investigating complex shock-obstacle interactions with strong discontinuity was presented. The values of the fluid variables at the embedded ghost-cells were obtained using a local Riemann problem solver that involves the neighboring ghost nodes. The method was then implemented within an HLLC scheme to simulate the complex fluid-solid interactions. Several test cases were presented to validate the proposed scheme. The developed solver was first validated against the experimental results of supersonic flow past a circular cylinder and step with 90° corner, then the results of shock/triangular prism interaction were further compared with the experimental results of literature. Excellent agreement is obtained in terms of compressible wave propagation, as well as vorticity development and transport. The method has good applicability for studying wave evolution in the early stage of shock wave impact on obstacles. |
| format | Article |
| id | doaj-art-5c72cac523054a1e81e67bc457a45fef |
| institution | Kabale University |
| issn | 2096-1642 |
| language | zho |
| publishDate | 2025-07-01 |
| publisher | China Astronautic Publishing CO., LTD. ; Editorial Office of Physics of Gases |
| record_format | Article |
| series | 气体物理 |
| spelling | doaj-art-5c72cac523054a1e81e67bc457a45fef2025-08-20T03:34:13ZzhoChina Astronautic Publishing CO., LTD. ; Editorial Office of Physics of Gases气体物理2096-16422025-07-01104424710.19527/j.cnki.2096-1642.1125qtwl-10-4-42Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary MethodJianxin ZHANG0Hong CHEN1Conglin LIU2Ge WANG3Shanghai Space Propulsion Technology Research Institute, Shanghai 201109, ChinaCollege of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaIn the previously developed ghost fluid methods (GFMs), the focus is often on the fluid-fluid interface. Based on this method, a ghost immersed boundary method for investigating complex shock-obstacle interactions with strong discontinuity was presented. The values of the fluid variables at the embedded ghost-cells were obtained using a local Riemann problem solver that involves the neighboring ghost nodes. The method was then implemented within an HLLC scheme to simulate the complex fluid-solid interactions. Several test cases were presented to validate the proposed scheme. The developed solver was first validated against the experimental results of supersonic flow past a circular cylinder and step with 90° corner, then the results of shock/triangular prism interaction were further compared with the experimental results of literature. Excellent agreement is obtained in terms of compressible wave propagation, as well as vorticity development and transport. The method has good applicability for studying wave evolution in the early stage of shock wave impact on obstacles.http://qtwl.xml-journal.net/cn/article/doi/10.19527/j.cnki.2096-1642.1125ghost fluid methodimmersed boundary methodshock wavedescartes gridcompressible flow |
| spellingShingle | Jianxin ZHANG Hong CHEN Conglin LIU Ge WANG Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary Method 气体物理 ghost fluid method immersed boundary method shock wave descartes grid compressible flow |
| title | Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary Method |
| title_full | Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary Method |
| title_fullStr | Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary Method |
| title_full_unstemmed | Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary Method |
| title_short | Numerical Simulation of Shock Wave Diffraction Using the Wall Ghost Immersed Boundary Method |
| title_sort | numerical simulation of shock wave diffraction using the wall ghost immersed boundary method |
| topic | ghost fluid method immersed boundary method shock wave descartes grid compressible flow |
| url | http://qtwl.xml-journal.net/cn/article/doi/10.19527/j.cnki.2096-1642.1125 |
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