Orifice Jet Curvature And Its Interaction With A Row Of Short Pin-Fins

IF 1.8 3区 工程技术 Q3 ENGINEERING, MECHANICAL
Sjouke Schekman, Tongbeum Kim
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引用次数: 0

Abstract

Abstract The fluidic behaviours and interactions present in a setup utilising perforated blockages and downstream pin-fin are elucidated: specifically, the role of jet curvature in flow interactions and the interaction of end-wall flows around the pin-fins subjected to impinging jet. To this end, a combination of particle image velocimetry based measurements and oil-dye surface flow visualization technique is utilised. Two different configurations of jet flows, with or without flanking jets, and three different distances between the pin-fins and blockages were considered. Jet curvature can result in flow inclinations of as much as 45° - 60° interacting with the pin-fins and the majority of the jet flow skewed towards the inner side of the pin-fin. At the end-wall, the interaction with nearby structures, being blockages or pin-fins, alter the shape and profile of the flows. This alteration is in contrast to those around conventional pin-fin arrays which remain largely unaltered in the presence of nearby pin-fins.
孔板射流曲率及其与一排短鳍的相互作用
摘要:本文阐述了利用穿孔阻塞和下游钉片的装置中存在的流体行为和相互作用:特别是射流曲率在流动相互作用中的作用以及受冲击射流影响的钉片周围端壁流动的相互作用。为此,结合了基于颗粒图像测速的测量和油染料表面流动可视化技术。考虑了两种不同的射流结构,有或没有侧翼射流,以及三种不同的尾翼和阻塞之间的距离。射流曲率可导致气流倾斜度高达45°- 60°,与尾翼相互作用,大部分射流向尾翼内侧倾斜。在端壁上,与附近结构的相互作用,如阻塞或鳍片,改变了流动的形状和轮廓。这种变化与传统的针鳍阵列形成对比,传统的针鳍阵列在附近有针鳍的情况下基本上保持不变。
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
CiteScore
4.60
自引率
10.00%
发文量
165
审稿时长
5.0 months
期刊介绍: Multiphase flows; Pumps; Aerodynamics; Boundary layers; Bubbly flows; Cavitation; Compressible flows; Convective heat/mass transfer as it is affected by fluid flow; Duct and pipe flows; Free shear layers; Flows in biological systems; Fluid-structure interaction; Fluid transients and wave motion; Jets; Naval hydrodynamics; Sprays; Stability and transition; Turbulence wakes microfluidics and other fundamental/applied fluid mechanical phenomena and processes
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