实验流体力学

Aerodynamic force measurements on a flexible flag flapping in uniform flow

SUN Chuan-bao, JIA Lai-bing, LI Fa-yao, YIN Xie-zhen

2011, 25(6): 1-5,27. doi: 10.3969/j.issn.1672-9897.2011.06.001

Abstract(107) PDF(5)

Abstract:

Experimental research on the high angle of attack aerodynamic characteristics of an 80°/65° double-delta wing

SUN Hai-sheng, JIANG Yu-biao, LIU Zhi-tao, SHI Zhe-yu

2011, 25(6): 6-12. doi: 10.3969/j.issn.1672-9897.2011.06.002

Abstract(122) PDF(5)

Abstract:
The aerodynamic characteristics,pressure distribution and flowfield evolution of an 80°/65° double-delta wing model have been studied in φ3.2m low speed wind tunnel at CARDC by means of force measurement,pressure measurement and PIV technique.The Reynolds number is 0.49~1.3( × 106)and the range of angle of attack(AoA) is between 0° and 60°.The study indicates that the results obtained from different types of tests have good correlation.The lift coefficient reaches maximum at 30° AoA,changes slightly between 30°~37° AoA,then drops rapidly as AoA increases.When AoA exceeds 30°,the leading edge vortex begins to break down.From 38° to 40° AoA,the suctionpeak disappears gradually and pressure coefficient decreases evidently.After 40° AoA,the suction peak disappears completely and leading edge vortex breaks down totally.

Experimental study on large-scale spiral structures in turbulent natural convection between two vertical plates by PIV

HAN Biao, NIU Hong-tao

2011, 25(6): 13-18. doi: 10.3969/j.issn.1672-9897.2011.06.003

Abstract(117) PDF(4)

Abstract:

The unsteady aerodynamic characteristics of coupled motion at high angle of attack

YANG Meng, HUANG Da

2011, 25(6): 19-22. doi: 10.3969/j.issn.1672-9897.2011.06.004

Abstract(105) PDF(4)

Abstract:

PIV measurement on airfoil flow separation control course by plasma actuation