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Simulation of the Unsteady Flow Field around a Complete Helicopter with a Structured RANS Solver

Schwarz, Thorsten and Khier, Walid and Raddatz, Jochen (2006) Simulation of the Unsteady Flow Field around a Complete Helicopter with a Structured RANS Solver. In: High Performance Computing on Vector Systems, pp. 125-137. Springer Verlag , Berlin, Heidelberg, New York. Second Teraflop Workbench Project Workshop, 2005-03, Stuttgart, Germany. ISBN 3-540-29124-5

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Abstract

The air flow past a wind tunnel model of an Eurocopter BO-105 fuselage, main rotor and tail rotor configuration is simulated by solving the time dependent Navier-Stokes equations. The flow solver uses overlapping, block structured grids to discretize the computational domain. The simulation setup and the execution on a parallel NEC-SX6 vector computer are described. The numerical results are compared with unsteady pressure measurements on the fuselage and the blades. An overall good agreement is found. Differences between predicted and measured data on the main rotor and the tail rotor can be explained by blade elasticity effects and a different trim law respectively. The computational performance of the flow solver is analyzed for the NEC-SX6 and NEC-SX8 vector computer showing a good parallel performance. Modifications of the code structure resulted in a reduction of the execution time for the Chimera procedure by a factor of 6.6.

Item URL in elib:https://elib.dlr.de/44083/
Document Type:Conference or Workshop Item (Paper)
Title:Simulation of the Unsteady Flow Field around a Complete Helicopter with a Structured RANS Solver
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwarz, ThorstenUNSPECIFIEDUNSPECIFIED
Khier, WalidUNSPECIFIEDUNSPECIFIED
Raddatz, JochenUNSPECIFIEDUNSPECIFIED
Date:2006
Journal or Publication Title:High Performance Computing on Vector Systems
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 125-137
Editors:
EditorsEmail
Resch, MichaelUNSPECIFIED
Bönisch, ThomasUNSPECIFIED
Benkert, KatharinaUNSPECIFIED
Furui, ToshiyukiUNSPECIFIED
Seo, YoshikiUNSPECIFIED
Bez, WolfgangUNSPECIFIED
Publisher:Springer Verlag , Berlin, Heidelberg, New York
ISBN:3-540-29124-5
Status:Published
Keywords:Helicopter, Navier-Stokes equations, unsteady flow, parallel computer, vector computer
Event Title:Second Teraflop Workbench Project Workshop
Event Location:Stuttgart, Germany
Event Type:international Conference
Event Dates:2005-03
Organizer:Höchstleistungsrechenzentrum Stuttgart (HLRS)
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:17 Jul 2006
Last Modified:27 Apr 2009 12:58

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