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The Overlapping Grid Technique for the Time Accurate Simulation of Rotorcraft Flows

Schwarz, Thorsten (2005) The Overlapping Grid Technique for the Time Accurate Simulation of Rotorcraft Flows. 31st European Rotorcraft Forum, 2005-09-13 - 2005-09-15, Florence, Italy.

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This paper presents the implementation of the overlapping grid technique into DLR's structured flow solver FLOWer. The hole cutting procedure and the search methods are described. Trilinear interpolation is used to transfer flow data between grids. For data interpolation close to solid surfaces, a projection algorithm is applied which corrects discretization effects. The approach used to prescribe rigid body motions for unsteady flow simulations allows to relate the motion of any body to any other body. Unsteady simulations also require to consider the hole motion during the definition of the interpolation points. For the integration of forces on grids with mesh overlap on body surfaces a unique surface is generated. Background grids are created with a Cartesian grid generator, which allows for cubic and anisotropic cells. Several examples of applications demonstrate the generality of the implementation of the Chimera technique

Item URL in elib:https://elib.dlr.de/21066/
Document Type:Conference or Workshop Item (UNSPECIFIED)
Title:The Overlapping Grid Technique for the Time Accurate Simulation of Rotorcraft Flows
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:September 2005
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:CFD, RANS, Chimera, Overlapping grids, overset grids
Event Title:31st European Rotorcraft Forum
Event Location:Florence, Italy
Event Type:international Conference
Event Dates:2005-09-13 - 2005-09-15
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Schwarz, Dr.-Ing. Thorsten
Deposited On:10 Jan 2006
Last Modified:27 Apr 2009 04:52

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