Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejection
The potential for secondary-combustion with low-temperature solid propellant in gas generation is a potential risk to ejection application. This study performed a three-dimensional dynamic numerical simulation with Re-Normalization Group turbulence model and finite-rate/eddy-dissipation model of a t...
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| Format: | Article |
| Language: | English |
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Académie des sciences
2021-08-01
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| Series: | Comptes Rendus. Mécanique |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.92/ |
| _version_ | 1797651443086262272 |
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| author | Hu, Xiao-lei Guo, Jia-yi Sun, Chuan-bin Le, Gui-gao |
| author_facet | Hu, Xiao-lei Guo, Jia-yi Sun, Chuan-bin Le, Gui-gao |
| author_sort | Hu, Xiao-lei |
| collection | DOAJ |
| description | The potential for secondary-combustion with low-temperature solid propellant in gas generation is a potential risk to ejection application. This study performed a three-dimensional dynamic numerical simulation with Re-Normalization Group turbulence model and finite-rate/eddy-dissipation model of a two-step reaction mechanism to better understand the interaction between secondary-combustion and ring-cavity structures, and combustion effect on the loads and interior ballistic stabilization during ejection. The dynamic zone of rail cover was modelled as a rigid body, and its motion was coupled with the secondary-combustion flow in the initial chamber based on the dynamic layering method. A comparison between the numerical results and experimental data in published literature showed good agreement. Four different ring-cavity volume geometries were simulated, including no ring-cavity. Results showed that three-stage high-temperature zone can be divided in the initial chamber at the founding time in the four cases, which are a pair of spherical high-temperature zone, high-temperature zone with skirt touching walls and high-temperature zone reverse from rail cover. Additionally, increasing ring-cavity volume can accelerate the axial and radial hot gas velocity on the ring-cavity cross-section and postpone secondary-combustion process. It was also found that larger ring-cavity volume structure can smoothen the pressure and acceleration curves, reduce the out-tube-velocity and delay the out-tube-time. |
| first_indexed | 2024-03-11T16:14:52Z |
| format | Article |
| id | doaj.art-0cbb7123907f4ab1b213e205fe8b7a93 |
| institution | Directory Open Access Journal |
| issn | 1873-7234 |
| language | English |
| last_indexed | 2024-03-11T16:14:52Z |
| publishDate | 2021-08-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Mécanique |
| spelling | doaj.art-0cbb7123907f4ab1b213e205fe8b7a932023-10-24T14:20:59ZengAcadémie des sciencesComptes Rendus. Mécanique1873-72342021-08-01349239141310.5802/crmeca.9210.5802/crmeca.92Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejectionHu, Xiao-lei0https://orcid.org/0000-0002-3523-9842Guo, Jia-yi1https://orcid.org/0000-0002-5278-8413Sun, Chuan-bin2Le, Gui-gao3School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, 243002, ChinaSchool of Mechanical Engineering, Anhui University of Technology, Ma’anshan, 243002, ChinaSchool of Mechanical Engineering, Anhui University of Technology, Ma’anshan, 243002, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, ChinaThe potential for secondary-combustion with low-temperature solid propellant in gas generation is a potential risk to ejection application. This study performed a three-dimensional dynamic numerical simulation with Re-Normalization Group turbulence model and finite-rate/eddy-dissipation model of a two-step reaction mechanism to better understand the interaction between secondary-combustion and ring-cavity structures, and combustion effect on the loads and interior ballistic stabilization during ejection. The dynamic zone of rail cover was modelled as a rigid body, and its motion was coupled with the secondary-combustion flow in the initial chamber based on the dynamic layering method. A comparison between the numerical results and experimental data in published literature showed good agreement. Four different ring-cavity volume geometries were simulated, including no ring-cavity. Results showed that three-stage high-temperature zone can be divided in the initial chamber at the founding time in the four cases, which are a pair of spherical high-temperature zone, high-temperature zone with skirt touching walls and high-temperature zone reverse from rail cover. Additionally, increasing ring-cavity volume can accelerate the axial and radial hot gas velocity on the ring-cavity cross-section and postpone secondary-combustion process. It was also found that larger ring-cavity volume structure can smoothen the pressure and acceleration curves, reduce the out-tube-velocity and delay the out-tube-time.https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.92/Low-temperature propellantSecondary-combustionConfined initial chamberRing-cavityLoadsGas ejection interior ballistic |
| spellingShingle | Hu, Xiao-lei Guo, Jia-yi Sun, Chuan-bin Le, Gui-gao Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejection Comptes Rendus. Mécanique Low-temperature propellant Secondary-combustion Confined initial chamber Ring-cavity Loads Gas ejection interior ballistic |
| title | Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejection |
| title_full | Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejection |
| title_fullStr | Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejection |
| title_full_unstemmed | Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejection |
| title_short | Investigation of the effect of ring-cavity on secondary-combustion and interior ballistic stabilization with low-temperature solid propellant in gas ejection |
| title_sort | investigation of the effect of ring cavity on secondary combustion and interior ballistic stabilization with low temperature solid propellant in gas ejection |
| topic | Low-temperature propellant Secondary-combustion Confined initial chamber Ring-cavity Loads Gas ejection interior ballistic |
| url | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.92/ |
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