Identifying Transport Properties of Gas from Measurements of Heat Flux at Stagnation Point of Blunt Body. Technique and Experimental Results

IF 1.3 4区 工程技术 Q3 ENGINEERING, MECHANICAL
A. V. Nenarokomov, D. L. Reviznikov, S. A. Budnik, D. M. Titov, A. V. Morzhukhina, A. V. Netelev, I. A. Borisenko
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引用次数: 0

Abstract

In their previous work [1], the authors presented a method of identifying the characteristics of a gaseous medium from measurements of the heat flux absorbed by the surface of a blunt body in a gas flow. The identification problem was stated in an extreme formulation: the sought-for transport properties of a gaseous medium were determined via minimization of the objective function of the estimated and measured heat fluxes absorbed by the surface of a solid body. For minimization of the objective function, the Nelder–Mead method was used in combination with random restarts; the results of testing the algorithm in a model experiment are given. This paper presents the technique of conduction of experiment to verify the method for identification of the gas flow parameters. Experimental results are given for two different gas flow sources.

Abstract Image

Abstract Image

通过测量钝体停滞点的热通量确定气体的传输特性。技术和实验结果
摘要 在之前的研究[1]中,作者提出了一种通过测量气流中钝体表面吸收的热通量来确定气态介质特性的方法。识别问题的表述非常极端:通过最小化固体表面吸收的估计热通量和测量热通量的目标函数来确定气态介质所需的传输特性。为了使目标函数最小化,采用了内尔德-梅德法(Nelder-Mead method)与随机重启相结合的方法;文中给出了在模型实验中测试该算法的结果。本文介绍了通过实验验证气体流动参数识别方法的技术。给出了两种不同气流源的实验结果。
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 Engineering Thermophysics
Journal of Engineering Thermophysics THERMODYNAMICS-ENGINEERING, MECHANICAL
CiteScore
2.30
自引率
12.50%
发文量
0
审稿时长
3 months
期刊介绍: Journal of Engineering Thermophysics is an international peer reviewed journal that publishes original articles. The journal welcomes original articles on thermophysics from all countries in the English language. The journal focuses on experimental work, theory, analysis, and computational studies for better understanding of engineering and environmental aspects of thermophysics. The editorial board encourages the authors to submit papers with emphasis on new scientific aspects in experimental and visualization techniques, mathematical models of thermophysical process, energy, and environmental applications. Journal of Engineering Thermophysics covers all subject matter related to thermophysics, including heat and mass transfer, multiphase flow, conduction, radiation, combustion, thermo-gas dynamics, rarefied gas flow, environmental protection in power engineering, and many others.
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