脉冲发动机中隔层传热炭化模型

推进技术 ›› 2012, Vol. 33 ›› Issue (2): 259-262.

脉冲发动机中隔层传热炭化模型

王春光,田维平,杨德敏,史宏斌,朱涛

西北工业大学航天学院,陕西西安 710072;西北工业大学航天学院,陕西西安 710072;西安航天动力技术研究所,陕西西安 710025;西安航天动力技术研究所,陕西西安 710025;西安航天动力技术研究所,陕西西安 710025

发布日期:2021-08-15
作者简介:王春光(1985—),男,博士生,研究领域为固体火箭发动机总体设计。E-mail:chencong0269@163.com
基金资助:
国家“九七三”项目(61391)。

Charring Model of Heat Transfer for Pulse Separation Device of Pulse Motor

College of Astronautics,Northwestern Polytechnical University, Xi′an 710072, China;College of Astronautics,Northwestern Polytechnical University, Xi′an 710072, China;Xi′an Institute of Aerospace Propulsion Xi′an 710025,China;Xi′an Institute of Aerospace Propulsion Xi′an 710025,China;Xi′an Institute of Aerospace Propulsion Xi′an 710025,China

Published:2021-08-15

摘要/Abstract

摘要： 为分析脉冲发动机中隔层的绝热效果及温度变化情况,推导了隔层两种炭化模型的计算公式,对比实际发动机试车结果,模型一误差为20%,模型二误差为6.7%,炭化模型二具有较好的精度；数值模拟了隔层的热传导过程,将是否考虑炭化影响的隔层传热深度及温度分布与理论计算结果进行对比,未考虑炭化影响计算结果的误差在14.3%以上,考虑炭化影响计算结果的误差均小于10%。研究结果表明,预估隔层炭化深度时,应该运用炭化模型二；计算隔层的温度场分布时,必须考虑炭化影响。

关键词: 脉冲发动机;隔层;炭化模型;数值分析

Abstract: To investigate the heat transfer for pulse separation device (PSD)of pulse solid rocket motor, formulae of two charring models were developed and the results were compared with the actual engine test results.Charring model 1 has a 20% error,and charring model 2 has a 6.7% error,charring model 2 has a better accuracy.The heat conduction for PSD is computed and the results were compared for the depth and the temperature distribution of the PSD.The results does not consider charring has a 14.3% error,and the results consider charring has a 10% error.The results show that the charring model 2 gives a preferable explanation,and the simulated results agree well with the theoretical value when the charring is considered.The conclusions are helpful for designing pulse solid rocket motor configuration.

Key words: Double pulse solid rocket motor;PSD;Charring model;Numerical analysis

王春光,田维平,杨德敏,史宏斌,朱涛. 脉冲发动机中隔层传热炭化模型[J]. 推进技术, 2012, 33(2): 259-262.