A hybrid DNS/ROM approach for wind and ocean wave energy converters
BERGMANN, Michel
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
Institut de Mathématiques de Bordeaux [IMB]
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
Institut de Mathématiques de Bordeaux [IMB]
BERGMANN, Michel
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
Institut de Mathématiques de Bordeaux [IMB]
< Reduce
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
Institut de Mathématiques de Bordeaux [IMB]
Language
en
Communication dans un congrès
This item was published in
MECASIF Workshop 2017 - MECASIF on reduced order methods for wind and marine current power, 2017-02-20, Sophia Antipolis.
English Abstract
We present a numerical method to solve fluid flows with interfaces like fluid structure interactions. The incompressible Navier-Stokes equations are discretized on Cartesian grids coupled with immersed boundary and level ...Read more >
We present a numerical method to solve fluid flows with interfaces like fluid structure interactions. The incompressible Navier-Stokes equations are discretized on Cartesian grids coupled with immersed boundary and level set methods. Several applications will be presented starting from 2D fish like swimming to 3D power extraction like a Wave Energy Converter and windtubines. The CPU costs required for these kind of applications can be prohibitive. Indeed, large computational domains have to be used due to complex outflow boundary conditions. We thus present a method based on POD ROM (Proper Orthogonal Decomposition Reduced Order Models) that allows to use significant smaller DNS domains. This hybrid DNS/ROM approach finally allows to concentrate efforts (DNS) where accuracy is needed (near boundary) and to approximate the solution on robust POD basis (computed offline) elsewhere.Read less <
Origin
Hal imported