scholarly journals Energy harvesting from flow-induced vibration of a low-mass square cylinder with different incidence angles

AIP Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 025126
Author(s):  
Peng Han ◽  
Qiaogao Huang ◽  
Guang Pan ◽  
Wei Wang ◽  
Tianqi Zhang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Square Cylinder ◽  
Flow Induced Vibration ◽  
Low Mass

There is no critical mass ratio for galloping of a square cylinder under flow

2021 ◽  
Vol 931 ◽  
Author(s):  
Peng Han ◽  
Emmanuel de Langre
Keyword(s):  
Critical Mass ◽  
Reduced Order Model ◽  
Mass Ratio ◽  
Square Cylinder ◽  
Order Model ◽  
Flow Induced Vibration ◽  
Reduced Order ◽  
Square Cylinders ◽  
Vortex Induced Vibrations ◽  
Low Mass

The flow-induced vibration of square cylinders under flow is known to be caused by two distinct mechanisms of interaction: vortex-induced vibrations and galloping. In the present paper we address the issue of the apparent suppression of galloping when the mass ratio between the solid and the fluid is low enough. By using a reduced-order model that we validate on pre-existing results, we show that galloping is actually not suppressed, but delayed to higher values of the flow velocity. This is explained using a linear stability analysis where the competition between unstable modes is related to the transition between vortex-induced vibration and galloping. Direct numerical simulations coupled with a moving square cylinder confirm that galloping can be found even at very low mass ratios.

Perspectives in flow-induced vibration energy harvesting

2021 ◽  
Vol 119 (10) ◽  
pp. 100502
Author(s):  
Junlei Wang ◽  
Daniil Yurchenko ◽  
Guobiao Hu ◽  
Liya Zhao ◽  
Lihua Tang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Vibration Energy ◽  
Flow Induced Vibration ◽  
Vibration Energy Harvesting

Energy harvesting from flow-induced vibration: a lumped parameter model

2018 ◽  
Vol 40 (24) ◽  
pp. 2903-2913 ◽  
Author(s):  
Junlei Wang ◽  
Guoping Li ◽  
Meng Zhang ◽  
Guifeng Zhao ◽  
Zunlong Jin ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Lumped Parameter Model ◽  
Flow Induced Vibration ◽  
Lumped Parameter
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