Unstructured Overset Mesh Adaptation with Turbulence Modeling for Unsteady Aerodynamic Interactions

Autor:	Marilyn J. Smith, Michael A. Park, Rajiv Shenoy
Rok vydání:	2014
Předmět:	Physics::Fluid Dynamics Boundary layer Computer science Inviscid flow Turbulence modeling Aerospace Engineering Aerodynamics Mechanics Wake Reynolds-averaged Navier–Stokes equations Grid Simulation Large eddy simulation
Zdroj:	Journal of Aircraft. 51:161-174
ISSN:	1533-3868 0021-8669
Popis:	Schemes for anisotropic grid adaptation for dynamic overset simulations are presented. These approaches permit adaptation over a periodic time window in a dynamic flowfield so that an accurate evolution of the unsteady wake may be obtained, as demonstrated on an unstructured flow solver. Unlike prior adaptive schemes, this approach permits grid adaptation to occur seamlessly across any number of grids that are overset, excluding only the boundary layer to avoid surface manipulations. A demonstration on a rotor/fuselage-interaction configuration includes correlations with time-averaged and instantaneous fuselage pressures, and wake trajectories. Additionally, the effects of modeling the flow as inviscid and turbulent are reported. The ability of the methodology to improve these predictions is confirmed, including a vortex/fuselage-impingement phenomenon that has before now not been captured by computational simulations. The adapted solutions exhibit dependency based on the choice of the feature to form the...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee50ef278f179a9a97009ff5a8d1c065 https://doi.org/10.2514/1.c032195 Zobrazit plný text záznamu