4 papers · 1 filter
Elliptic Relaxation Strategies to Support Numerical Stability of Segregated Continuous Adjoint Flow Solvers
Niklas Kühl
This paper introduces a novel method for numerically stabilizing sequential continuous adjoint flow solvers utilizing an elliptic relaxation strategy. The proposed approach is form…
Adjoint Node-Based Shape Optimization of Free Floating Vessels
Niklas Kühl, Thanh Tung Nguyen, Michael Palm +2
The paper is concerned with a node-based, gradient-driven, continuous adjoint two-phase flow procedure to optimize the shapes of free-floating vessels and discusses three topics. F…
Adjoint-based Shape Optimization for the Minimization of Flow-induced Hemolysis in Biomedical Applications
Georgios Bletsos, Niklas Kühl, Thomas Rung
This paper reports on the derivation and implementation of a shape optimization procedure for the minimization of hemolysis induction in biomedical devices. Hemolysis is a blood da…
Decoupling of Control and Force Objective in Adjoint-Based Fluid Dynamic Shape Optimization
Niklas Kühl, Peter M. Müller, Arthur Stück +2
We discuss exterior and classical interior alternatives for evaluating fluid flow induced forces on bodies. The discussion aims at a reduction of the total shape derivative, achiev…