Simulation of Interaction between a Flexible Filament and Fluid Flow by Immersed Boundary Method

Putri, Elisa Melati; Kingora, Kamau; Chern, Ming‐Jyh

doi:10.1016/j.proeng.2014.06.316

Cited by 2 publications

(2 citation statements)

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“…Two sheets of length L are immersed in a two-dimensional, incompressible uniform flow of air. The problem is reduced to a 2D problem, which is the same as most of the previous studies (Shelley and Zhang, 2011;Putri et al, 2014;Medina and Kang, 2018). The cost and time required for 3D analysis of this problem are unbearable.…”

Section: Establishment Of the Model 21 Background And Physical Model Establishmentmentioning

confidence: 99%

“…However, pure theoretical analysis cannot obtain a transient response, and it is difficult to perform nonlinear analysis, although these problems are nonlinear. Therefore, numerical simulation is extensively used in these issues (Zhu and Peskin, 2002;Yu, 2005;Huang et al, 2007; EC 37,4 Putri et al, 2014;Favier et al, 2015;Lee and Choi, 2015). Combining the research of the predecessors, it can be found that the flapping of the flexible plate is related to three dimensionless parameters: dimensionless mass ratio, Reynolds number and dimensionless bending stiffness.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and simulation of sheets ply separation induced by air flow

Yang

2019

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Purpose The purpose of this paper is to investigate the mechanism of sheets ply separation induced by air flow through numerical simulation with two-way FSI (fluid-structure interaction) simulation using ANSYS and theoretical speculation. Design/methodology/approach The paper primarily establishes a simplified physical model of the sheets ply separation induced by air flow. Then, the force of the air flow acting on the sheet has been analyzed based on the model, and the main factor leading to separation was obtained. Furthermore, the parameter analysis was investigated based on linear stability analysis, from which the factors that affect stable separation are obtained. Finally, a series of numerical simulations are performed to verify the conclusions. Findings This study shows that the main separation factor is the variable air pressure in the gap between the sheets caused by the dynamic pressure air flow. Increasing the inlet velocity of the flow field will increase the separation distance but excessive velocity will lead to instability. The viscous resistance acting on the sheet and the bending stiffness of the sheet are factors that stabilize the system, and the sheet density and the restoring force can lead to instability. Originality/value The paper is one of the first in the literature that investigates the problem of sheets ply separation induced by air flow, which is the primary method for multi-layer separation in sheets de-stacking operations, especially for the high-speed occasion.

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Section: Establishment Of the Model 21 Background And Physical Model Establishmentmentioning

confidence: 99%