翼装稳定性的空气动力学和 RSM 分析

IF 1.1 4区工程技术 Q4 MECHANICS

Journal of Applied Fluid Mechanics Pub Date : 2023-12-01 DOI:10.47176/jafm.16.12.2032

M. Nazemian, M. S. Valipour

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引用次数: 0

摘要

翼装是一种跳伞连身衣，可以在更长时间的飞行中产生更多的升力。本研究考察了106雷诺数下侧滑角对初学者翼装的影响。在攻角为0°至40°，侧滑角为20°的情况下，使用模型尺度的长度来确定实验测试。利用攻角和侧滑的变化分析了力和力矩系数。尽管侧滑角对升力和阻力系数没有显著影响，但侧滑力和滚转/偏航力矩是高度非线性的。流动结构可视化和数值模拟表明，当滑移角较小时，表面失速只发生在下侧。在个人飞行运动中，翼装的侧滑更小，更有优势。通过对翼装模型的Tuft可视化，比较响应面法在不同飞行条件下的性能，确定不同飞行条件下的最佳气动系数。

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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Aerodynamic and RSM Analysis of Wingsuit Stability

A Wingsuit is a Skydiving Jumpsuit that generates more lift for longer flights. This study examined the effects of side slip angles on a beginner wingsuit at 106 Reynolds number. Experimental tests were determined by using the length of the model scale at angles of attack ranging from 0° to 40° and sideslip angles of up to 20°. Force and moment coefficients were analyzed using variations in angles of attack and sideslip. Despite the absence of significant effects of sideslip angles on the lift and drag coefficients, side force and rolling/yawing moments were highly nonlinear. Flow structure visualization and numerical simulation show that surface stalls only occur on the lower side when slip angles are lower. In individual aviation sports, wingsuits are more advantageous when they have less sideslip. With Tuft visualization on the wingsuit model, the best aerodynamic coefficient under different flight conditions was determined by comparing the Response Surface Methodology performance under different flight conditions.

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来源期刊

Journal of Applied Fluid Mechanics THERMODYNAMICS-MECHANICS

CiteScore

2.00

自引率

20.00%

发文量

138

审稿时长

>12 weeks

期刊介绍： The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating. The motivation for this new fluid mechanics journal is driven by the following points: (1) there is a need to have an e-journal accessible to all fluid mechanics researchers, (2) scientists from third- world countries need a venue that does not incur publication costs, (3) quality papers deserve rapid and fast publication through an efficient peer review process, and (4) an outlet is needed for rapid dissemination of fluid mechanics conferences held in Asian countries. Pertaining to this latter point, there presently exist some excellent conferences devoted to the promotion of fluid mechanics in the region such as the Asian Congress of Fluid Mechanics which began in 1980 and nominally takes place in one of the Asian countries every two years. We hope that the proposed journal provides and additional impetus for promoting applied fluids research and associated activities in this continent. The journal is under the umbrella of the Physics Society of Iran with the collaboration of Isfahan University of Technology (IUT) .