Experimental investigation of effects of spanwise segmented blowing on a circulation control wing with a dual-radius flap

IF 2.5 3区工程技术 Q2 ENGINEERING, MECHANICAL

Experiments in Fluids Pub Date : 2025-06-09 DOI:10.1007/s00348-025-04055-4

Tulasi Ram Vechalapu, Konstantinos Kanistras, Chang-Kwon Kang

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引用次数: 0

Abstract

The aim of this study is to explore the efficacy of spanwise segment blowing in an attempt to reduce the mass flow requirements while improving aerodynamic efficiency. For this study a modified NACA0012 wing with three plena is chosen. Direct force and 2D PIV measurements are collected at three spanwise locations to examine the impact of segmented on demand blowing. Further stereoscopic PIV measurements are conducted to investigate the aerodynamic effects of individual blowing, dual blowing, and uniform blowing configurations on wake dynamics. The results of the force measurements combined with the 2D PIV measurements demonstrate that only one-third of the mass flow is required when employing segmented blowing while maintaining the same lift and rolling moments coefficients. Stereo-PIV measurements reveal that initially the tip vortex is stronger, but increased blowing intensifies the root vortex, eventually surpassing the tip vortex. The results also showed that only the adjacent plenum has an effect on the root vortex, whereas the tip vortex is influenced by blowing from all three plenums, underscoring its sensitivity to interactions across multiple locations.

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展向分段吹气对双半径襟翼循环控制翼影响的实验研究

本研究的目的是探讨展向分段吹气在降低质量流量要求的同时提高气动效率的有效性。在这项研究中，我们选择了一种改进型的NACA0012机翼。直接力和二维PIV测量在三个跨向位置收集，以检查分段对需求吹的影响。进一步进行了立体PIV测量，研究了单个吹风、双吹风和均匀吹风构型对尾流动力学的气动影响。力测量结果与二维PIV测量结果相结合表明，在保持相同升力和滚动力矩系数的情况下，采用分段吹气只需要三分之一的质量流量。立体piv测量结果显示，最初叶顶涡较强，但增加的吹风使根部涡增强，最终超过叶顶涡。结果还表明，只有相邻的静压室对根部涡有影响，而顶端涡受到来自三个静压室的吹风的影响，强调了其对多个位置相互作用的敏感性。

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

Experiments in Fluids 工程技术-工程：机械

CiteScore

5.10

自引率

12.50%

发文量

157

审稿时长

3.8 months

期刊介绍： Experiments in Fluids examines the advancement, extension, and improvement of new techniques of flow measurement. The journal also publishes contributions that employ existing experimental techniques to gain an understanding of the underlying flow physics in the areas of turbulence, aerodynamics, hydrodynamics, convective heat transfer, combustion, turbomachinery, multi-phase flows, and chemical, biological and geological flows. In addition, readers will find papers that report on investigations combining experimental and analytical/numerical approaches.