Vortex Analysis Library (VALIB)

0468628 - MÚ 2017 RIV CZ eng L4 - Software
Šístek, Jakub
Vortex Analysis Library (VALIB).
Internal code: valib ; 2016
Technical parameters: Open source software package under the New BSD License
Economic parameters: The software contains state-of-the-art methods for vortex identification. These allow for better identification and visualization of vortices in applications such as flows around vehicles or in turbomachinery, leading to better insight into the vortical structures and potentially to more energy efficient designs.
R&D Projects: GA ČR GA14-02067S
Institutional support: RVO:67985840
Keywords : vortex identification * average corotation * residual vorticity * residual strain-rate
Subject RIV: BK - Fluid Dynamics
http://users.math.cas.cz/~sistek/software/valib/

The Vortex Analysis Library (VALIB) is a collection of functions intended for computing local vortex identification criteria out of the velocity gradient at a point in 3D. The project contains some established methods as well as some recently developed methods. Functions have a common interface based on the velocity gradient at a point in 3D, which is a 3x3 matrix stored in a column-major format. On the output from each function, there is the demanded quantity - one or more scalars, a vector of length 3, or a 3x3 matrix, depending on the nature of the quantity. The intended use of the library is to evaluate a vortex identification quantity for each point in a 3-D flow field by calling a VALIB function at each of these points and storing the result. These values can be then used for postprocessing, e.g. by plotting isosurfaces of the scalar quantities.
Permanent Link: http://hdl.handle.net/11104/0266432