Investigation of a Sharp 10° Cone in a Ludwieg Tube

IF 2.4 3区 工程技术 Q3 MECHANICS
Anton Gorbushin, Sergey Glazkov, Margarita Gribkova, Dmitriy Dugin, Anton Epikhin, Alexander Kozik, Ekaterina Krapivina, Vladimir Mosharov, Vladimir Radchenko
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Abstract

The objectives of this study were (i) to create a unique test case of an unsteady flow around a cone in a Ludwieg tube for the purpose of validating computational codes; (ii) to test a new method for determining non-stationary aerodynamic loads using a strain-gauge balance; and (iii) to test a new method for determining unsteady pressure using a Pitot-Prandtl-type probe with a cavity between the sensor and the flow. The results of testing of a 10° cone in the TsAGI short-duration UT-1M Ludwieg-type tube at Mach number M = 6 are presented. During the runs, the following parameters were measured simultaneously: non-stationary aerodynamic loads using an internal six-component strain-gauge balance, dynamic behavior of the cone and balance using three-axis accelerometers, unsteady pressure on the cone surface, total and static pressure using a Pitot-Prandtl-type probe, cone surface temperature using a temperature sensitive paint, flow parameter fluctuations on the cone surface using a constant voltage film thermoanemometer. In some tests, the flow was visualized using the Schlieren method. Before the tests, numerical calculations of the flow around the cone in the facility were performed with the EWT-TsAGI software package to select the location of the oversized cone and the Pitot-Prandtl-type probe in the test section. The conducted studies confirmed the applicability of the new methods for measuring non-stationary forces and unsteady pressure in short-duration wind tunnels.

Abstract Image

Abstract Image

路德维格管中10°尖锥的研究
本研究的目的是:(i)创建一个独特的测试用例,在路德维格管中围绕锥体的非定常流动,以验证计算代码;(ii)测试一种利用应变计天平测定非静止空气动力负荷的新方法;(iii)测试一种确定非定常压力的新方法,该方法使用皮托-普朗特型探头,传感器和流体之间有一个空腔。本文介绍了在马赫数M = 6条件下,TsAGI短时程UT-1M路德维格管中10°锥的试验结果。在运行过程中,同时测量了以下参数:使用内部六分量应变计平衡的非静态气动载荷,使用三轴加速度计的锥体和平衡的动态行为,锥体表面的非定常压力,使用皮托-普朗特型探头的总压力和静压,使用温度敏感涂料的锥体表面温度,锥体表面的流动参数波动使用恒压薄膜热风速计。在一些试验中,使用纹影法将流动可视化。在测试之前,使用EWT-TsAGI软件包对设施内锥体周围的流动进行了数值计算,以选择超大锥体和皮托-普朗特型探头在测试段中的位置。这些研究证实了新方法在短持续时间风洞非定常力和非定常压力测量中的适用性。
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来源期刊
Flow, Turbulence and Combustion
Flow, Turbulence and Combustion 工程技术-力学
CiteScore
5.70
自引率
8.30%
发文量
72
审稿时长
2 months
期刊介绍: Flow, Turbulence and Combustion provides a global forum for the publication of original and innovative research results that contribute to the solution of fundamental and applied problems encountered in single-phase, multi-phase and reacting flows, in both idealized and real systems. The scope of coverage encompasses topics in fluid dynamics, scalar transport, multi-physics interactions and flow control. From time to time the journal publishes Special or Theme Issues featuring invited articles. Contributions may report research that falls within the broad spectrum of analytical, computational and experimental methods. This includes research conducted in academia, industry and a variety of environmental and geophysical sectors. Turbulence, transition and associated phenomena are expected to play a significant role in the majority of studies reported, although non-turbulent flows, typical of those in micro-devices, would be regarded as falling within the scope covered. The emphasis is on originality, timeliness, quality and thematic fit, as exemplified by the title of the journal and the qualifications described above. Relevance to real-world problems and industrial applications are regarded as strengths.
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