Numerical Studies of the Flapping Motion of Flexible Plates in a Uniform Flow
|Keywords||Elastic plate Fluid-structure interaction Fictitious domain method Bi-stable phenomenon|
Elastic plate with fluid interaction phenomenon is widespread in nature and industrial . By studying this issue , can reveal elastic plate in the flow-induced oscillation mechanism and the mechanism of the interaction between the elastic plate is passed through the fluid . Based on the fictitious domain method for the first time the three - dimensional case of a single block of elastic plate in a uniform flow in the self-oscillating motion of the numerical simulation to study the long - thickness ratio , aspect ratio , density ratio , shear modulus and Reynolds number immeasurable outline the parameters of the law of oscillation of elastic plate , and a detailed discussion of the elastic plate bi-stable phenomenon . For the two-dimensional case of two elastic plate in a uniform stream of self - oscillating movement , the first systematic analysis of the two - plate spacing , the phase oscillation mode of the density ratio , shear modulus , Reynolds number and initial configuration parameters such as the elastic plate affected. The simulations and experimental results obtained to verify the reliability of the fictitious domain method used in this paper . Our predecessors did not find some new physical phenomena observed , the elastic plate provides a useful reference for further study of self - oscillation problem .