Flutter Limits and Behaviors of a Flexible Thin Sheet in High-Speed Flow— I: Analytical Method for Prediction of the Sheet Behavior

1999 ◽  
Vol 122 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Nobuyuki Yamaguchi ◽  
Kazuhiko Yokota ◽  
Yoshinobu Tsujimoto
Keyword(s):  
Analytical Method ◽  
Small Amplitude ◽  
High Speed ◽  
Thin Sheet ◽  
System Of Equations ◽  
High Speed Flow ◽  
Speed Flow ◽  
Oscillation Modes ◽  
Low Mass ◽  
Progressive Waves

An analytical method is proposed for the prediction of fluttering of a flexible thin sheet or web swept by fluid flow. It assumes self-excited aeroelastic oscillation of the sheet with infinitesimally small amplitude. The flow and the sheet motion are expressed by distributed vortices over the sheet and the wake, and by bending motions of a number of short segments constituting the sheet. The obtained system of equations determines the flutter limits, the oscillation modes and frequencies. The method treats particularly well the situation of very low mass ratios where the modes are far from those in vacuum and progressive waves are predominant. [S0098-2202(00)01101-9]

Flutter Limits and Behavior of a Flexible Thin Sheet in High-Speed Flow— II: Experimental Results and Predicted Behaviors for Low Mass Ratios

1999 ◽  
Vol 122 (1) ◽  
pp. 74-83 ◽  
Author(s):  
Nobuyuki Yamaguchi ◽  
Tooru Sekiguchi ◽  
Kazuhiko Yokota ◽  
Yoshinobu Tsujimoto
Keyword(s):  
High Speed ◽  
Thin Sheet ◽  
Fluid Pressure ◽  
Mass Effect ◽  
Inertia Force ◽  
Speed Flow ◽  
Wide Range ◽  
Mass Ratios ◽  
Low Mass ◽  
And Behavior

Flutter phenomena of flexible thin sheets such as paper swept by wind are studied for a wide range of mass ratios by an analytical method developed by the authors. The analytical results explain well the tendencies found in the experimental data. Furthermore, the flutter behaviors for very low mass ratios are predicted to tend to deviate far from those for ordinarily stiff materials, which are attributed to the effects of both the fluid friction and the added mass effect by surrounding fluid in addition to the ordinary governing effects for higher mass ratios, i.e., elasticity, inertia force, and fluid pressure. [S0098-2202(00)01201-3]

Visualization of High Speed Flow in a Pipe with Cavity

1997 ◽  
Vol 17 (Supplement2) ◽  
pp. 113-116
Author(s):  
Kenji HOSOI ◽  
Masaaki KAWAHASHI ◽  
Hiroyuki HIRAHARA ◽  
Kouju SHIOZAKI ◽  
Kenichirou SATOH
Keyword(s):  
High Speed ◽  
High Speed Flow ◽  
Speed Flow

Pulsed discharge-induced high-speed flow near a dielectric ledge

2021 ◽  
Vol 62 (7) ◽  
Author(s):  
D. I. Tatarenkova ◽  
E. Yu. Koroteeva ◽  
T. A. Kuli-zade ◽  
E. A. Karnozova ◽  
I. A. Znamenskaya ◽  
...  
Keyword(s):  
High Speed ◽  
Pulsed Discharge ◽  
High Speed Flow ◽  
Speed Flow
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