Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet Performances
In this work, 2D numerical RANS (Reynolds Average Navier-Stokes) simulations were carried out to investigate the thermodynamic performance of a solid fuel ramjet (SFRJ) with different inlet conditions. This is achieved by using an in-house FORTRAN code to simulate a 2D turbulent, reacting, unsteady...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/8868288 |
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| author | Weixuan Li Dan Zhao Xiong Chen Liang Zhu Siliang Ni |
| author_facet | Weixuan Li Dan Zhao Xiong Chen Liang Zhu Siliang Ni |
| author_sort | Weixuan Li |
| collection | DOAJ |
| description | In this work, 2D numerical RANS (Reynolds Average Navier-Stokes) simulations were carried out to investigate the thermodynamic performance of a solid fuel ramjet (SFRJ) with different inlet conditions. This is achieved by using an in-house FORTRAN code to simulate a 2D turbulent, reacting, unsteady flow in the ramjet engine. The inlet conditions are characterized by three key parameters: (1) swirl number (SN), (2) mass flow rate (ṁair), and (3) inlet temperature (Tin). With the code numerically validated by benchmarking with a number of computed cases, it is applied to perform systematic studies on the turbulent flow recirculation, combustion, and heat transfer characteristics. It is found that increasing SN, ṁair, or Tin can dramatically enhance the combustion heat release rate, regression rate, and combustor average temperature. Furthermore, the analysis on the chemical reaction intermediate (CO) reveals that the chemical reaction is more sufficient with increased ṁair, but SN=0. In addition, a secondary vortex is generated at the corner of the backward facing step in the presence of a swirl flow resulting from the instability of the shear layer. Finally, the nonlinear correlations between the heat transfer, combustion characteristics, and flow field characteristics and the corresponding inlet thermodynamic parameters are identified. |
| format | Article |
| id | doaj-art-736cd1bcce63485b8a8ad3294b8b5d3a |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-736cd1bcce63485b8a8ad3294b8b5d3a2025-02-03T06:46:22ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742021-01-01202110.1155/2021/88682888868288Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet PerformancesWeixuan Li0Dan Zhao1Xiong Chen2Liang Zhu3Siliang Ni4School of Mechanical Engineering, Nanjing University of Science and Technology, 210094 Nanjing, ChinaDepartment of Mechanical Engineering, University of Canterbury, Christchurch 8140, New ZealandSchool of Mechanical Engineering, Nanjing University of Science and Technology, 210094 Nanjing, ChinaXi’an Modern Control Technology Research Institute, Xi’an 710065, ChinaDepartment of Mechanical Engineering, University of Canterbury, Christchurch 8140, New ZealandIn this work, 2D numerical RANS (Reynolds Average Navier-Stokes) simulations were carried out to investigate the thermodynamic performance of a solid fuel ramjet (SFRJ) with different inlet conditions. This is achieved by using an in-house FORTRAN code to simulate a 2D turbulent, reacting, unsteady flow in the ramjet engine. The inlet conditions are characterized by three key parameters: (1) swirl number (SN), (2) mass flow rate (ṁair), and (3) inlet temperature (Tin). With the code numerically validated by benchmarking with a number of computed cases, it is applied to perform systematic studies on the turbulent flow recirculation, combustion, and heat transfer characteristics. It is found that increasing SN, ṁair, or Tin can dramatically enhance the combustion heat release rate, regression rate, and combustor average temperature. Furthermore, the analysis on the chemical reaction intermediate (CO) reveals that the chemical reaction is more sufficient with increased ṁair, but SN=0. In addition, a secondary vortex is generated at the corner of the backward facing step in the presence of a swirl flow resulting from the instability of the shear layer. Finally, the nonlinear correlations between the heat transfer, combustion characteristics, and flow field characteristics and the corresponding inlet thermodynamic parameters are identified.http://dx.doi.org/10.1155/2021/8868288 |
| spellingShingle | Weixuan Li Dan Zhao Xiong Chen Liang Zhu Siliang Ni Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet Performances International Journal of Aerospace Engineering |
| title | Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet Performances |
| title_full | Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet Performances |
| title_fullStr | Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet Performances |
| title_full_unstemmed | Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet Performances |
| title_short | Numerical Investigation of Inlet Thermodynamic Conditions on Solid Fuel Ramjet Performances |
| title_sort | numerical investigation of inlet thermodynamic conditions on solid fuel ramjet performances |
| url | http://dx.doi.org/10.1155/2021/8868288 |
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