Wolfgang A. Wall

TL;DR: In this paper, a fixed-point fluid-structure interaction (FSI) solver with dynamic relaxation is revisited, where the relaxation parameter is calculated by both Aitken's \({\Delta^{2}}\) method and the method of steepest descent.

TL;DR: The presented isogeometric approach to shape optimization, the analysis model is inherently merged with the design model, omitting the typically involved interplay between both and derive analytical sensitivities for NURBS discretizations which allow application of efficient gradient-based optimization algorithms.

TL;DR: In this article, a discrete representation of the added mass operatorMA is given and ''instability conditions'' are evaluated for different temporal discretisation schemes and it is proven that for every sequentially staggered scheme and given spatial discretization of a problem, a mass ratio between fluid and structural mass density can be found at which the coupled system becomes unstable.

TL;DR: In this paper, the authors used impedance spectroscopy measurements in a new experimental setup to obtain the tortuosities and MacMullin numbers of some commonly separators, demonstrating experimental errors of < 8%.

TL;DR: In this paper, a fixed grid fluid-structure interaction scheme was proposed for the simulation of the interaction of thin and bulky structures exhibiting large deformations, based on an eXtended Finite Element Method (XFEM) approach.