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Variable Fidelity Optimization of Required Power of Rotor Blades: Investigation of Aerodynamic Models and their Application

Wilke, Gunther (2012) Variable Fidelity Optimization of Required Power of Rotor Blades: Investigation of Aerodynamic Models and their Application. 38th European Rotorcraft Forum 2012, 04-07 Sep 2012, Amsterdam, Netherlands.

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Abstract

An investigation of aerodynamic models with varying fidelity is performed with respect to the required power for different rotor blade geometries. Concluding from this nvestigation low, mid and high fidelity methods are selected. For hover these comprise a finite state inflow model, Euler computations on coarse meshes and highly resolved RANS computations, both with periodic boundaries. For forward flight, a prescribed wake model, single bladed Euler computations and a Chimera setup for RANS computations are selected. A comparative study between between single fidelity and variable fidelity surrogate based optimization is performed, where resource savings of up to 64.8% are seen for forward flight optimizations.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Variable Fidelity Optimization of Required Power of Rotor Blades: Investigation of Aerodynamic Models and their Application
Authors:
AuthorsInstitution or Email of Authors
Wilke, GuntherAS
Date:7 September 2012
Status:Published
Keywords:variable fidelity optimization, BET, CFD, Surrogates, Kriging, VFM, Optimization, Rotor, Hover, Forward Flight
Event Title:38th European Rotorcraft Forum 2012
Event Location:Amsterdam, Netherlands
Event Type:international Conference
Event Dates:04-07 Sep 2012
Organizer:NLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Gunther Andreas Wilke
Deposited On:02 Nov 2012 14:34
Last Modified:12 Dec 2013 21:48

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