New temperature jump boundary condition in high-speed rarefied gas flow simulations
The effect of the sliding friction has been important in calculating the heat flux of gas flow from the surface since there is some slip over the surface. There has not been any the temperature jump condition including the sliding friction part so far. In this paper, we will propose a new temperatu...
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| Format: | Article |
| Language: | English |
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Publishing House for Science and Technology
2017-06-01
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| Series: | Vietnam Journal of Mechanics |
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| Online Access: | https://vjs.ac.vn/index.php/vjmech/article/view/8760 |
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| author | Nam T. P. Le Ngoc Anh Vu Le Tan Loc Tran Ngoc Thoai |
| author_facet | Nam T. P. Le Ngoc Anh Vu Le Tan Loc Tran Ngoc Thoai |
| author_sort | Nam T. P. Le |
| collection | DOAJ |
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The effect of the sliding friction has been important in calculating the heat flux of gas flow from the surface since there is some slip over the surface. There has not been any the temperature jump condition including the sliding friction part so far. In this paper, we will propose a new temperature jump condition that includes the sliding friction. Our new temperature jump condition will be evaluated for NACA0012 micro-airfoil in high-speed rarefied gas flow simulations using the CFD method, which solves the Navier-Stokes equations within the OpenFOAM framework with working gas as air. The airfoil case is simulated with various Knudsen numbers from 0.026 to 0.26, and the angles-of-attack (AOAs) from 0-deg to 20-deg. The surface gas temperatures predicting by our new temperature jump condition give good agreements with the DSMC data, especially the NACA0012 micro-airfoil cases with the high Knudsen numbers, Kn = 0.1, and Kn = 0.26 with AOA = 20-deg. for the lower surface.
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| format | Article |
| id | doaj-art-c1fb1f595dc3454ab2aae2e7f71447df |
| institution | DOAJ |
| issn | 0866-7136 2815-5882 |
| language | English |
| publishDate | 2017-06-01 |
| publisher | Publishing House for Science and Technology |
| record_format | Article |
| series | Vietnam Journal of Mechanics |
| spelling | doaj-art-c1fb1f595dc3454ab2aae2e7f71447df2025-08-20T03:04:46ZengPublishing House for Science and TechnologyVietnam Journal of Mechanics0866-71362815-58822017-06-0139210.15625/0866-7136/8760New temperature jump boundary condition in high-speed rarefied gas flow simulationsNam T. P. Le0Ngoc Anh Vu1Le Tan Loc2Tran Ngoc Thoai3Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, VietnamHo Chi Minh City University of Technology, VNU-HCM, VietnamVietnam Aviation Academy, Ho Chi Minh City, VietnamIndustrial University of Ho Chi Minh City, Vietnam The effect of the sliding friction has been important in calculating the heat flux of gas flow from the surface since there is some slip over the surface. There has not been any the temperature jump condition including the sliding friction part so far. In this paper, we will propose a new temperature jump condition that includes the sliding friction. Our new temperature jump condition will be evaluated for NACA0012 micro-airfoil in high-speed rarefied gas flow simulations using the CFD method, which solves the Navier-Stokes equations within the OpenFOAM framework with working gas as air. The airfoil case is simulated with various Knudsen numbers from 0.026 to 0.26, and the angles-of-attack (AOAs) from 0-deg to 20-deg. The surface gas temperatures predicting by our new temperature jump condition give good agreements with the DSMC data, especially the NACA0012 micro-airfoil cases with the high Knudsen numbers, Kn = 0.1, and Kn = 0.26 with AOA = 20-deg. for the lower surface. https://vjs.ac.vn/index.php/vjmech/article/view/8760Sliding frictionnew temperature jump conditionNACA0012 airfoil |
| spellingShingle | Nam T. P. Le Ngoc Anh Vu Le Tan Loc Tran Ngoc Thoai New temperature jump boundary condition in high-speed rarefied gas flow simulations Vietnam Journal of Mechanics Sliding friction new temperature jump condition NACA0012 airfoil |
| title | New temperature jump boundary condition in high-speed rarefied gas flow simulations |
| title_full | New temperature jump boundary condition in high-speed rarefied gas flow simulations |
| title_fullStr | New temperature jump boundary condition in high-speed rarefied gas flow simulations |
| title_full_unstemmed | New temperature jump boundary condition in high-speed rarefied gas flow simulations |
| title_short | New temperature jump boundary condition in high-speed rarefied gas flow simulations |
| title_sort | new temperature jump boundary condition in high speed rarefied gas flow simulations |
| topic | Sliding friction new temperature jump condition NACA0012 airfoil |
| url | https://vjs.ac.vn/index.php/vjmech/article/view/8760 |
| work_keys_str_mv | AT namtple newtemperaturejumpboundaryconditioninhighspeedrarefiedgasflowsimulations AT ngocanhvu newtemperaturejumpboundaryconditioninhighspeedrarefiedgasflowsimulations AT letanloc newtemperaturejumpboundaryconditioninhighspeedrarefiedgasflowsimulations AT tranngocthoai newtemperaturejumpboundaryconditioninhighspeedrarefiedgasflowsimulations |