水力模拟与固体火箭发动机流场分析

HYDRAULIC ANALOGY AND SOLID ROCKET MOTOR FLOW FIELD ANALYSIS

关键词:  水动力模拟  水流试验  流场显示  固体推进剂火箭发动机

Key words:  Hydrodynamic simulation  Water flow test  Flow visualization  Solid propellant rocket engine

摘要:

水力模拟技术的发展,可以对固体发动机流场进行范围广泛的水力模拟。例如:轴对称流场、定常和非定常流动、亚音和超音流动具有激波的流动等。作者介绍了水力模拟的基本理论、轴对称流动水力模拟的主要对应关系以及水力模拟试验装置的简要情况。

Abstract:

The reliability of solid rocket motors (SRM) has become an important problem in motor designs. Designers have a hope to know the flow field in SRM in detail. Due to high temperature and high pressure of gas in SRM, direct measurement of the flow field is very difficult. Then the technic of the hydraulic analogy to flow field analysis of SRM has been developed. The hydraulic analogy can be applied qualitatively to the following types of compressible gas flow: rocket nozzle flow, subsonic and supersonic, steady and nonsteady, rocket nozzle exhaust plume, etc. In this paper, some fundamental theory of hydraulic analogy and schematic of water table are introduced.