Experimental Observations on Film Cooling Effectiveness on Aerodynamic Heating in Hypersonic Flow

IF 1.3 4区工程技术 Q2 ENGINEERING, AEROSPACE

Journal of Spacecraft and Rockets Pub Date : 2024-06-14 DOI:10.2514/1.a35907

Jithin Sreekumar, Talluri Vamsi Krishna, Honhar Gupta, Mohammed Ibrahim Sugarno

引用次数: 0

Abstract

An experimental campaign was carried out to examine the effectiveness of film cooling on aerodynamic heating at hypersonic velocities. A flat-faced cylindrical model was tested at flow velocity of 2.5 km/s in a hypersonic shock tunnel. The test model was equipped with temperature sensors for convective heat flux measurement. The coolant gas, nitrogen, was injected through a 2 mm orifice housed at the center of the test model at different pressure ratios. Two different flow regimes were observed, steady and unsteady, with the steady flowfield having overall reduction in heat transfer compared to the unsteady one.

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薄膜冷却对高超声速气流中空气动力加热效果的实验观察

为了研究薄膜冷却对高超音速气动加热的影响，我们开展了一项实验活动。在高超音速冲击隧道中，以 2.5 千米/秒的流速对一个平面圆柱模型进行了测试。测试模型配备了温度传感器，用于测量对流热通量。冷却气体氮气以不同的压力比通过一个位于试验模型中心的 2 毫米孔口注入。观察到两种不同的流动状态：稳定和非稳定，与非稳定流场相比，稳定流场的热传递总体上有所减少。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Spacecraft and Rockets 工程技术-工程：宇航

CiteScore

3.60

自引率

18.80%

发文量

185

审稿时长

4.5 months

期刊介绍： This Journal, that started it all back in 1963, is devoted to the advancement of the science and technology of astronautics and aeronautics through the dissemination of original archival research papers disclosing new theoretical developments and/or experimental result. The topics include aeroacoustics, aerodynamics, combustion, fundamentals of propulsion, fluid mechanics and reacting flows, fundamental aspects of the aerospace environment, hydrodynamics, lasers and associated phenomena, plasmas, research instrumentation and facilities, structural mechanics and materials, optimization, and thermomechanics and thermochemistry. Papers also are sought which review in an intensive manner the results of recent research developments on any of the topics listed above.