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研究了侧向喷流的一种直接实验模拟技术,旨在探讨喷流力直接作用在天平上时,侧向喷流对气动载荷的影响及其增益情况。本文的直接模拟是通过一种通气式应变天平实现的。研究中分析了有关模拟原则,妥善处理了诸如高压气体密封、天平变形引发的漂移、干扰等相关技术问题,并在一尖拱柱构型上实现了多种条件下的直接模拟,给出了来流条件和喷口参数条件对法向力、俯仰力矩增益因子的影响。最后,就实验结果进行了适当讨论和评述。
A direct experimental simulation of lateral jet flow is studied to investigate the effect of lateral jet flow on aerodynamic load and its gain when the jet force acts directly on the balance. The direct simulation in this paper is achieved by a vented strain gauge. In this study, the relevant principles of simulation are analyzed, and related technical problems such as sealing of high-pressure gas, drifts and interference caused by balance deformation are properly handled, and direct simulation under a variety of conditions is realized on the configuration of a sharp arch column. Influence of Flow Condition and Spout Parameter on Normal Force and Pitch Moment Gain Factor. Finally, the experimental results were discussed and commented appropriately.