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Experimental Study of Flow Deflectors Designed to Alleviate Ground Winds Induced by Exhaust of 80-by 120-Foot Wind Tunnel

机译：用于减轻80×120英尺风洞排风引起地面风的导流板的试验研究

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An experimental study directed at finding a deflector ramp that will reduce to an acceptable level the ground winds under the exhaust jet of the 80 by 120 Foot Wind Tunnel at NASA Ames Center is described. A one-fifieth scale model of the full-scale facility was used to investigate how the jet flow field was modified by the various design parameters of the ramp. It was concluded that the ground winds were alleviated sufficiently by a ramp with end plates located next to the wind tunnel building along the ground edge of the exhaust opening. At full scale, the ramp should have a slant length of 7.62 m (25 ft) or more, and would be elevated at about 45 degrees to the ground plane. The material should have holes less than 15.2 (6 in) in diameter distributed uniformly over its surface to produce a porosity of about 30%.

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作者
Rossow, V. J.; Schmidt, G. I.; Reinath, M. S.; Vanaken, J. M.; Parrish, C. L.;
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年度 1986
页码 p.1-43
总页数 43
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Deflectors; Exhaust diffusers; Ground wind; Structural design criteria; Wind tunnels; Ramps (Structures); Flow visualization; Jet flow; Two dimensional flow; Velocity distribution;

机译：导流板;排气扩散器;地面风;结构设计标准;风洞;斜坡（结构）;流动可视化;射流;二维流动;速度分布;

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Experimental Study of Flow Deflectors Designed to Alleviate Ground Winds Induced by Exhaust of 80-by 120-Foot Wind Tunnel

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