Introduction The title echoes \The Engineer Grapples with Nonlinear Problems", a classical paper of von Karman (1940) (who was hardly a \mere" engineer!). Much has been accomplished in the half century since Karman wrote. A great deal remains to be done, however, and nonlinear problems will be of major interest for the forseeable future. Yet in the last years there has been a subtle shift of em...

An extension of the well-known Neville–Aitken's algorithm for interpolation on Grassmann manifold G m ( ? n ) in framework parametric model order reduction is presented. Interpolation points are subspaces spanned by bases obtained Proper Orthogonal Decomposition available solutions associated with chosen parameter sampling. The performed recursively via geodesic barycenter two points. Three CFD...

In this paper an energy harvesting system based on a piezoelectric converter to extract energy from airflow and use it to power battery-less sensors is presented. The converter is embedded as a part of a flexure beam that is put into vibrations by von Karman vortices detached from a bluff body placed upstream. The vortex street has been investigated by Computational Fluid Dynamics (CFD) simulat...

Abstract This work deals with the analysis of cork P50, an ablative thermal protection material (TPM) used for heat shield qarman Re-entry CubeSat. Developed European Space Agency (ESA) at von Karman Institute (VKI) Fluid Dynamics, is a scientific demonstrator Aerothermodynamic Research. The ability to model and predict atypical behavior new cork-based materials considered critical research top...

Introduction. The Karman-vortex street formed behind two-dimensional bluff bodies has attracted interest because of its beautiful flow pattern. It goes without saying that this beautifulness results from the alternative vortices regularly shed from the body. Vortex shedding induces aerodynamic force perpendicular to the mean flow. This force causing mechanical vibration of the model is accompan...