凝相相变过程的热力计算

推进技术 ›› 1997, Vol. 18 ›› Issue (5): 46-49.

凝相相变过程的热力计算

方丁酉,张为华,张纪生,姜勇

国防科技大学航天技术系!长沙;410073;国防科技大学航天技术系!长沙;410073;航天工业总公司31所!北京;100074;航天工业总公司31所!北京;100074

发布日期:2021-08-15

THERMODYNAMIC CALCULATION WITH PHASE CHANGE PROCESS OF CONDENSED MATERIAL

Dept. of Aerospace Technology, National Univ. of Defence Technology,Changsha, 410073;Dept. of Aerospace Technology, National Univ. of Defence Technology,Changsha, 410073;The 31st Research Inst, Beijing, 100074;The 31st Research Inst, Beijing, 100074

Published:2021-08-15

摘要/Abstract

摘要： 一般的热力计算软件很少计及凝相物质的相变过程，当燃烧产物温度接近某凝相物质的相变温度时，将出现迭代计算不收敛。根据能量守恒、喉部单位质量流量的流通面积最小和等熵关系，提出了凝相物质在燃烧室、喷喉和喷管出口处于相变过程的热力计算方法，并给出了算例。

关键词: 燃烧产物;相变;发动机热力计算

Abstract: The phase change process of condensed material is rarely considered in a generalsoftware of thermodynamic calculation. This software will fail when the temperature of combustionproduct approaches the phase change temperature of condensed material. The thermodynamiccalculation method considered the phase change process of condensed material is presented in thispaper. Based on energy conservation, minimum flow section area of combustion product at nozzlethroat and isentropic relation,some calculation cases are given.

Key words: <keywords>Combustion product;Phase transformation;Engine thermodynamic calculation

方丁酉,张为华,张纪生,姜勇. 凝相相变过程的热力计算[J]. 推进技术, 1997, 18(5): 46-49.