| Scaling of the flow field in a combustion chamber with agas——gas injector |
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| 引用本文： | 汪小卫,蔡国飙,金平. Scaling of the flow field in a combustion chamber with agas——gas injector[J]. 中国物理 B, 2010, 19(1): 19401-019401. DOI: 10.1088/1674-1056/19/1/019401 |
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| 作者姓名： | 汪小卫 蔡国飙 金平 |
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| 作者单位： | School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| 基金项目： | Project supported by the NationalHigh Technology Research and Development Program of China (Grant No.2007AA7023) and the Innovation Foundation of BUAA for Ph.DGraduates (Grant No. 430569). |
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| 摘 要： | The scaling of the flowfield in a gas--gas combustionchamber is investigated theoretically, numerically andexperimentally. To obtain the scaling criterion of the gas--gascombustion flowfield, formulation analysis of the three-dimensional(3D) Navier--Stokes equations for a gaseous multi-component mixingreaction flow is conducted and dimensional analysis on the gas--gascombustion phenomena is also carried out. The criterion implies thatthe size and the pressure of the gas--gas combustion chamber can bechanged. Based on the criterion, multi-element injector chamberswith different geometric sizes and at different chamber pressuresranging from 3~MPa to 20~MPa are numerically simulated. Amulti-element injector chamber is designed and hot-fire tested atfive chamber pressures from 1.64~MPa to 3.68~MPa. Wall temperaturemeasurements are used to understand the similarity of combustionflowfields in the tests. The results have verified the similaritiesbetween combustion flowfields under different chamber pressures andgeometries, with the criterion applied.
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| 关 键 词： | scaling similarity gas–gas combustion experiment |
| 收稿时间： | 2009-04-18 |
| 修稿时间： | 2009-06-05 |
Scaling of the flow field in a combustion chamber with agas--gas injector |
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| Wang Xiao-Wei,Cai Guo-Biao and Jin Ping. Scaling of the flow field in a combustion chamber with agas--gas injector[J]. Chinese Physics B, 2010, 19(1): 19401-019401. DOI: 10.1088/1674-1056/19/1/019401 |
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| Authors: | Wang Xiao-Wei Cai Guo-Biao Jin Ping |
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| Affiliation: | School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The scaling of the flowfield in a gas--gas combustionchamber is investigated theoretically, numerically andexperimentally. To obtain the scaling criterion of the gas--gascombustion flowfield, formulation analysis of the three-dimensional(3D) Navier--Stokes equations for a gaseous multi-component mixingreaction flow is conducted and dimensional analysis on the gas--gascombustion phenomena is also carried out. The criterion implies thatthe size and the pressure of the gas--gas combustion chamber can bechanged. Based on the criterion, multi-element injector chamberswith different geometric sizes and at different chamber pressuresranging from 3~MPa to 20~MPa are numerically simulated. Amulti-element injector chamber is designed and hot-fire tested atfive chamber pressures from 1.64~MPa to 3.68~MPa. Wall temperaturemeasurements are used to understand the similarity of combustionflowfields in the tests. The results have verified the similaritiesbetween combustion flowfields under different chamber pressures andgeometries, with the criterion applied. |
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| Keywords: | scaling similarity gas--gas combustion experiment |
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