A new moving mass control method for fluid structure interaction problems

2021 ◽  
Vol 33 (12) ◽  
pp. 123102
Author(s):  
Yi Zhang ◽  
Shuyue Wang ◽  
Hao Zhang ◽  
Gang Sun
Keyword(s):  
Control Method ◽  
Fluid Structure Interaction ◽  
Moving Mass ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Moving Mass Control

scholarly journals An optimal control method for time-dependent fluid-structure interaction problems

2021 ◽  
Author(s):  
Yongxing Wang ◽  
Peter K. Jimack ◽  
Mark A. Walkley ◽  
Dongmin Yang ◽  
Harvey M. Thompson
Keyword(s):  
Control Method ◽  
Fluid Structure Interaction ◽  
Adjoint System ◽  
Descent Method ◽  
Interface Condition ◽  
Gradient Descent Method ◽  
Arbitrary Lagrangian Eulerian ◽  
Problem Size ◽  
Fluid Structure ◽  
Structure Interaction

AbstractIn this article, we derive an adjoint fluid-structure interaction (FSI) system in an arbitrary Lagrangian-Eulerian (ALE) framework, based upon a one-field finite element method. A key feature of this approach is that the interface condition is automatically satisfied and the problem size is reduced since we only solve for one velocity field for both the primary and adjoint system. A velocity (and/or displacement)-matching optimisation problem is considered by controlling a distributed force. The optimisation problem is solved using a gradient descent method, and a stabilised Barzilai-Borwein method is adopted to accelerate the convergence, which does not need additional evaluations of the objective functional. The proposed control method is validated and assessed against a series of static and dynamic benchmark FSI problems, before being applied successfully to solve a highly challenging FSI control problem.

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