scholarly journals Large eddy simulation of the fluid–structure interaction in an abstracted aquatic canopy consisting of flexible blades

2021 ◽  
Vol 916 ◽  
Author(s):  
Silvio Tschisgale ◽  
Bastian Löhrer ◽  
Richard Meller ◽  
Jochen Fröhlich
Keyword(s):  
Large Eddy Simulation ◽  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Eddy Simulation ◽  
Large Eddy

Abstract

Fluid-structure interaction study of the supersonic parachute using large-eddy simulation

2018 ◽  
Vol 35 (1) ◽  
pp. 157-168 ◽  
Author(s):  
Xue Yang ◽  
Li Yu ◽  
Xiao-Shun Zhao
Keyword(s):  
Large Eddy Simulation ◽  
Penalty Function ◽  
Fluid Structure Interaction ◽  
Content Type ◽  
Contact Algorithm ◽  
Structure Interaction ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Volume Problem ◽  
Contact Domain

Purpose The purpose of this study is to model the dynamic characteristics of an opened supersonic disk-gap-band parachute. Design/methodology/approach A fluid-structure interaction (FSI) method with body-fitted mesh is used to simulate the supersonic parachute. The compressible flow is modeled using large-eddy simulation (LES). A contact algorithm based on the penalty function with a virtual contact domain is proposed to solve the negative volume problem of the body-fitted mesh. Automatic unstructured mesh generation and automatic mesh moving schemes are used to handle complex deformations of the canopy. Findings The opened disk-gap-band parachute is simulated using Mach 2.0, and the simulation results fit well with the wind tunnel test data. It is found that the LES model can successfully predict large-scale turbulent vortex in the flow. This study also demonstrates the capability of the present FSI method as a tool to predict shock oscillation and breathing phenomenon of the canopy. Originality/value The contact algorithm based on the penalty function with a virtual contact domain is proposed for the first time. This methodology can be used to solve the negative volume problem of the dynamic mesh in the flow field.

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