Seminari del Dipartimento
Matematica Applicata Large Eddy Simulation Reduced Order Models Traian Iliescu 21-06-2016 - 15:00 aula seminari sezione Ing. Civile Dip Ingegneria, Università Roma Tre Via Vito Volterra 62, Roma
This talk proposes several large eddy simulation reduced order models (LES-ROMs) based on the proper orthogonal decomposition (POD). To develop these models, explicit POD spatial filtering is introduced. Two types of spatial filters are considered: A POD projection onto a POD subspace and a POD differential filter. These explicit POD spatial filters allow the development of two types of ROM closure models: phenomenological and approximate deconvolution. Furthermore, the explicit POD spatial filters are used to develop regularized ROMs in which various ROM terms are smoothed (regularized). The new LES-ROMs are tested in the numerical simulation of a three-dimensional flow past a circular cylinder. |