Topical Problems of Fluid Mechanics


Institute of Thermomechanics AS CR, v.v.i.	CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics	MIO Université du Sud Toulon Var - AMU - CNRS - IRD	Czech Pilot centre ERCOFTAC

Domain Nesting in LES for Urban Areas
V. Fuka, Z.-T. Xie
Abstract:
A domain nesting technique is developed for the Extended Large-Eddy Microscale Model (ELMM). It enables simulations of large areas in coarser resolution and nesting of smaller domains with higher resolution and keeping simple and e cient uniform orthogonal grids in each domain. The process was recently enhanced by nesting the pressure. The pressure field in the nested domain is blended with the pressure from the outer domain in a buffer layer. A fourth order central discretization was also implemented to decrease numerical errors.
Keywords:
large eddy simulation, domain nesting, grid nesting

Fulltext: PDF DOI: https://doi.org/10.14311/TPFM.2018.012

In Proceedings Topical Problems of Fluid Mechanics 2018, Prague, 2018 Edited by David Šimurda and Tomáš Bodnár, pp. 91-96 ISBN 978-80-87012-65-9 (Print) ISSN 2336-5781 (Print)