Computational Closed‐Loop Control of Fluid‐structure Interaction (FSCI) for Lightweight Structures

Abstract

This contribution gives a short introduction into the topic of fluid‐structure‐control interaction (FSCI). This is a multi‐field problem, where three fields are coupled, namely a fluid‐flow, structural dynamics and closed‐loop control of structures. The interactions are identified as surface‐coupling of fluid flow and structural dynamics as well as signal‐coupling of structural dynamics and closed‐loop control. At first a simple model problem is introduced, which allows an efficient investigation of the convergence behavior and stability of such kind of problem. In this context an iterative partitioned approach, using a serial Gauß‐Seidel scheme, is presented. Finally, the insights gained by the model problem are used to set up a multi‐dimensional numerical experiment. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)

A new family of projection schemes for the incompressible Navier–Stokes equations with control of high-frequency damping

“…Objective 1 is motivated by the successful recent employment of the basic model problems in the area of the partitioned schemes for fluid-structure interaction. Here, the analyses of appropriate spatially discrete model problems has allowed for in-depth insight into temporal and added mass related instabilities [15,16,17] and is increasingly used for new method development [18,19]. The investigation undertaken in the context of Objective 2 led to the observation that it is impossible to formulate a projection scheme for the model problem which is second order accurate and possesses high-frequency damping.…”