| 潜入喷管背壁区熔渣沉积的机理分析与数值模拟 |
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| 引用本文： | 魏超,侯晓.潜入喷管背壁区熔渣沉积的机理分析与数值模拟[J].航空动力学报,2006,21(6):1109-1115. |
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| 作者姓名： | 魏超 侯晓 |
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| 作者单位： | 中国航天科技集团四院,陕西,西安,710025 |
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| 摘 要： | 为了探求固体火箭发动机潜入喷管背壁区中熔渣沉积的机理和预估方法,采用欧拉-拉格朗日法模拟两相内流场,采用随机轨道模型跟踪离散相轨迹,确定了燃烧室中粒子的直径分布和两种熔渣捕获判据,分析了不同壁面恢复系数对熔渣沉积计算的影响,计算得到的熔渣最小占Al2O3总生成量的0.201%,最大占到0.287%.与实验数据对比证明该预估方法是准确可靠的.
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| 关 键 词： | 航空、航天推进系统 固体推进剂火箭发动机 两相流场 潜入喷管 熔渣沉积 |
| 文章编号： | 1000-8055(2006)06-1109-07 |
| 收稿时间： | 2005/11/29 0:00:00 |
| 修稿时间： | 2005年11月29 |
Mechanism investigation and numerical simulation of slag deposition for submerged nozzle |
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| WEI Chao and HOU Xiao.Mechanism investigation and numerical simulation of slag deposition for submerged nozzle[J].Journal of Aerospace Power,2006,21(6):1109-1115. |
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| Authors: | WEI Chao and HOU Xiao |
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| Institution: | The Fourth Academy of CASC, Xi'an 710025, China;The Fourth Academy of CASC, Xi'an 710025, China |
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| Abstract: | In order to explore the mechanism and the model of slag generation in solid propellant rocket motor,the two phase flowfield has been simulated using a combined Eulerian-Lagrangian analysis.The motion of the particulate phase was tracked with a stochastic model.The droplet size distribution in the chamber and the two captive rules were considered.Finally,the influence of different coefficients of restitution on slag calculation was investigated.The calculated result shows that the lowest slag weight is 0.201% and the highest slag weight is 0.287% of the total weight of Al_2O_3.The results are accurate and credible compared to the experimental data. |
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| Keywords: | aerospace propulsion system solid propellant rocket motor two-phase internal flow submerged nozzle slag deposition |
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