Hot-Wire Anemometry in High Subsonic Organic Vapor Flows

IF 1.9 3区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Turbomachinery-Transactions of the Asme Pub Date : 2023-06-26 DOI:10.1115/1.4062676

Leander Hake, Stefan aus der Wiesche, Stephan Sundermeier, Leon Cakievski, Joshua Bäumer, Paola Cinnella, Camille Matar, Xavier Gloerfelt

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引用次数: 1

Abstract

Abstract The present contribution reports the outcome of an experimental and numerical investigation of the behavior of a constant-temperature hot-wire anemometer in the high-subsonic flow up to a Mach number of 0.7 of the organic vapor Novec™ 649 at pressure and temperature levels of typical organic Rankine cycle (ORC) turbine applications. The experiments were carried out in the calibration section of a closed-loop organic vapor wind tunnel test facility enabling the independent variation of Reynolds numbers, Mach numbers, and total temperature within a certain range. It was found that the calibration and the determination of the sensitivity coefficients can be done in a way as proposed by de Souza and Tavoularis for air. The sensitivity coefficients for velocity and density were essentially equal for higher overheat ratios which support the interpretation of the signals and data reduction for turbulent quantities. Computational fluid dynamics (CFD) provided additional insight into potential real gas effects for hot-wire performance.

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高亚音速有机蒸汽流中的热线风速测定

摘要:本文报告了在典型有机朗肯循环(ORC)涡轮应用的压力和温度水平下，对有机蒸汽Novec™649高达0.7马赫数的高亚音速流中的恒温热线风速计的实验和数值研究结果。实验在雷诺数、马赫数和总温度在一定范围内独立变化的闭环有机蒸汽风洞试验装置的校准段进行。我们发现，可以用de Souza和Tavoularis提出的方法来校准和确定空气的灵敏度系数。对于较高的过热比，速度和密度的敏感系数基本相等，这支持对湍流量的信号和数据简化的解释。计算流体动力学(CFD)为热线性能的潜在实际气体效应提供了额外的见解。

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 Turbomachinery-Transactions of the Asme 工程技术-工程：机械

CiteScore

4.70

自引率

11.80%

发文量

168

审稿时长

9 months

期刊介绍： The Journal of Turbomachinery publishes archival-quality, peer-reviewed technical papers that advance the state-of-the-art of turbomachinery technology related to gas turbine engines. The broad scope of the subject matter includes the fluid dynamics, heat transfer, and aeromechanics technology associated with the design, analysis, modeling, testing, and performance of turbomachinery. Emphasis is placed on gas-path technologies associated with axial compressors, centrifugal compressors, and turbines. Topics: Aerodynamic design, analysis, and test of compressor and turbine blading; Compressor stall, surge, and operability issues; Heat transfer phenomena and film cooling design, analysis, and testing in turbines; Aeromechanical instabilities; Computational fluid dynamics (CFD) applied to turbomachinery, boundary layer development, measurement techniques, and cavity and leaking flows.