A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection
Abstract Aiming to efficiently simulate the transient process of transpiration cooling with phase change and reveal the convection mechanism between fluid and porous media particles in a continuum scale, a new two-phase mixture model is developed by incorporating the local thermal non-equilibrium ef...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2024-04-01
|
| Series: | Advances in Aerodynamics |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s42774-024-00173-5 |
| _version_ | 1827284015402450944 |
|---|---|
| author | Kaiyan Jin Jin Zhao Guice Yao Dongsheng Wen |
| author_facet | Kaiyan Jin Jin Zhao Guice Yao Dongsheng Wen |
| author_sort | Kaiyan Jin |
| collection | DOAJ |
| description | Abstract Aiming to efficiently simulate the transient process of transpiration cooling with phase change and reveal the convection mechanism between fluid and porous media particles in a continuum scale, a new two-phase mixture model is developed by incorporating the local thermal non-equilibrium effect. Considering the low-pressure and high overload working conditions of hypersonic flying, the heat and mass transfer induced by capillary and inertial body forces are analyzed for sub-cooled, saturated and super-heated states of water coolant under varying saturation pressures. After the validation of the model, transient simulations for different external factors, including spatially-varied heat flux, coolant mass flux, time-dependent external pressure and aircraft acceleration are conducted. The results show that the vapor blockage patterns at the outlet are highly dependent on the injection mass flux value and the external pressure, and the reduced saturation temperature at low external pressure leads to early boiling off and vapor blockage. The motion of flying has a large influence on the cooling effect, as the inertial force could change the flow pattern of the fluid inside significantly. The comparison of the results from 2-D and 3-D simulations suggests that 3-D simulation shall be conducted for practical application of transpiration cooling, as the thermal protection efficiency may be overestimated by the 2-D results due to the assumption of an infinite width length of the porous plate. |
| first_indexed | 2024-04-24T09:48:37Z |
| format | Article |
| id | doaj.art-4c8b98f5e4a546fe88810ed790e0cf72 |
| institution | Directory Open Access Journal |
| issn | 2524-6992 |
| language | English |
| last_indexed | 2024-04-24T09:48:37Z |
| publishDate | 2024-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Advances in Aerodynamics |
| spelling | doaj.art-4c8b98f5e4a546fe88810ed790e0cf722024-04-14T11:30:35ZengSpringerOpenAdvances in Aerodynamics2524-69922024-04-016112410.1186/s42774-024-00173-5A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protectionKaiyan Jin0Jin Zhao1Guice Yao2Dongsheng Wen3School of General Engineeing, Beihang UniversitySchool of Aeronautic Science and Engineeing, Beihang UniversitySchool of General Engineeing, Beihang UniversitySchool of General Engineeing, Beihang UniversityAbstract Aiming to efficiently simulate the transient process of transpiration cooling with phase change and reveal the convection mechanism between fluid and porous media particles in a continuum scale, a new two-phase mixture model is developed by incorporating the local thermal non-equilibrium effect. Considering the low-pressure and high overload working conditions of hypersonic flying, the heat and mass transfer induced by capillary and inertial body forces are analyzed for sub-cooled, saturated and super-heated states of water coolant under varying saturation pressures. After the validation of the model, transient simulations for different external factors, including spatially-varied heat flux, coolant mass flux, time-dependent external pressure and aircraft acceleration are conducted. The results show that the vapor blockage patterns at the outlet are highly dependent on the injection mass flux value and the external pressure, and the reduced saturation temperature at low external pressure leads to early boiling off and vapor blockage. The motion of flying has a large influence on the cooling effect, as the inertial force could change the flow pattern of the fluid inside significantly. The comparison of the results from 2-D and 3-D simulations suggests that 3-D simulation shall be conducted for practical application of transpiration cooling, as the thermal protection efficiency may be overestimated by the 2-D results due to the assumption of an infinite width length of the porous plate.https://doi.org/10.1186/s42774-024-00173-5Local thermal non-equilibrium (LTNE)Transient two-phase mixture model (TPMM)Transpiration coolingLow pressure effect |
| spellingShingle | Kaiyan Jin Jin Zhao Guice Yao Dongsheng Wen A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection Advances in Aerodynamics Local thermal non-equilibrium (LTNE) Transient two-phase mixture model (TPMM) Transpiration cooling Low pressure effect |
| title | A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection |
| title_full | A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection |
| title_fullStr | A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection |
| title_full_unstemmed | A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection |
| title_short | A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection |
| title_sort | modified local thermal non equilibrium model of transient phase change transpiration cooling for hypersonic thermal protection |
| topic | Local thermal non-equilibrium (LTNE) Transient two-phase mixture model (TPMM) Transpiration cooling Low pressure effect |
| url | https://doi.org/10.1186/s42774-024-00173-5 |
| work_keys_str_mv | AT kaiyanjin amodifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection AT jinzhao amodifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection AT guiceyao amodifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection AT dongshengwen amodifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection AT kaiyanjin modifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection AT jinzhao modifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection AT guiceyao modifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection AT dongshengwen modifiedlocalthermalnonequilibriummodeloftransientphasechangetranspirationcoolingforhypersonicthermalprotection |