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凝结对燃烧加热风洞流动影响的理论研究

heoretical Study on Condensation Effects on Combustion Heated Wind Tunnel Flows

中文摘要英文摘要

本文提出了一种评估燃烧加热高超声速风洞中水蒸气凝结对流场参数影响的方法。将高超声速风洞中伴随凝结的膨胀过程解耦为等熵膨胀过程和凝结过程,提出了等熵膨胀界面和凝结界面的概念。根据水蒸气凝结过程中的减质和加热效应,建立了流场参数相互影响下的理论模型,并将理论模型得到的结果与Cox-Stouffer文献结果以及ASCE2D程序的数值计算结果进行了对比,验证了提出的理论分析方法。应用该方法,对高超声速流动中凝结对流场参数的影响进行了系统的理论分析。结果表明:相同总温条件下,在水蒸气凝结量增大的过程中,出口流场中马赫数、静压以及静温的变化规律由加热效应起主导作用,而密度的变化规律则由减质效应起主导作用。

n analytic method to estimate the condensation effects in combustion heated wind tunnel flows is proposed. The complex process of hypersonic flows with condensation is decoupled into an isentropic expansion process and a condensation process, and the concept of isentropic expansion interface and condensation interface is proposed. Based on the effects of mass reduction and heat addition in the condensation process, a theoretical model is first established. As a validation, the comparison of the theoretical results with those of Cox-Stouffer literature and ASCE2D numerical simulation is performed and good agreements are found. The theoretical analysis is then applied to the combustion-heated hypersonic tunnel flows. Results show that under the condition of the same total temperature, with the increase of mass fraction of the condensed water, the heat addition effect plays a dominant role in the variation law of Mach number, static pressure and static temperature parameters in the flow field of the tunnel exit, while the mass reduction effect plays a leading role in the variation law of density.

林龙沅、罗喜胜、秦丰华

航空航天技术

燃烧加热风洞水蒸气凝结理论模型

combustion heated wind tunnelwater vaporcondensationtheoretical model

林龙沅,罗喜胜,秦丰华.凝结对燃烧加热风洞流动影响的理论研究[EB/OL].(2012-10-08)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/201210-52.点此复制

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