Towards shape optimization of steady-state fluid-structure interaction problems using vertex morphing

Asl R. Najian, D. Baumgärtner, K. U. Bletzinger

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The paper discusses the application of vertex morphing in the context of shape optimization of fluid-structure interaction problems under steady-state conditions. The objective function is given by lift and drag considerations at a flexible body within an incompressible viscous flow. Gradient-based optimization is employed to handle the large number of de- sign variables. For the necessary coupled sensitivity analysis a modified strictly continuous adjoint approach is presented in which the computation of expensive partial derivatives, such as the coupling terms, is avoided. Instead only boundary integral expressions need to be exchanged. This shows to be converging, efficient and easy to integrate in a given co-simulation environment. The Vertex Morphing method is finally applied to optimize the shape of a cylinder shell immersed in a laminar flow. The results indicate that vertex morphing is a suitable and effective method for preliminary design studies of coupled fluid-structure interaction problems.

Original languageEnglish
Title of host publication16th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103681
DOIs
StatePublished - 2015
Event16th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 2015 - Dallas, United States
Duration: 22 Jun 201526 Jun 2015

Publication series

Name16th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference

Conference

Conference16th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 2015
Country/TerritoryUnited States
CityDallas
Period22/06/1526/06/15

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