Width-adjustable open jet flow wind tunnel plenum chamber and open jet flow wind tunnel test method

• Main Authors: DENG XIAOBING, LIU LITAO, YAN WENCHENG, LIU XIAOLIN, LIANG YONG, GUO LINLIANG, JIN LING, ZENG WEIPING, YANG HONGSEN, YUE TINGRUI, WANG XUE, LIAN ZHENZENG
• Format: Patent
• Language: Chinese; English
• Published: 08.01.2021
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention provides a width-adjustable open jet flow wind tunnel plenum chamber and an open jet flow wind tunnel test method. The width-adjustable open jet flow wind tunnel plenum chamber comprisesa nozzle, a jet flow test section and a collector, and the plenum chamber is a width-adjustable plenum chamber . A large number of tests, numerical simulation and theoretical analysis of the system verify that the width-adjustable plenum chamber can shift resonance to other wind speeds by reducing or increasing the plenum chamber width under the condition of the required test wind speed, avoids resonance between edge sound feedback and plane pressure standing waves in the width direction of the plenum chamber, achieves the purpose of eliminating low-frequency pressure oscillation under the condition of the required test wind speed, and can meet the requirements of advanced aircrafts or high-speed trains and the like for the high test wind speed of an open jet flow wind tunnel. 本发明提供一种可调宽度的开口射流风洞驻室及开口射流风洞试验方法，所述驻室