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Progress in Aero-Acoustic Optimization Techniques in DLR's VicToria Project

Wilke, Gunther Andreas (2019) Progress in Aero-Acoustic Optimization Techniques in DLR's VicToria Project. ONERA-DLR Aerospace Symposium 2019, 3.-5. Juni 2019, Paris, Frankreich.

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Abstract

The methods of the aero-acoustic optimization toolchain developed by DLR within the VicToria project are further analyzed. From previous investiga- tions, it was settled that an unsteady panel code with a free-wake model poses a fast alternative to higher-order CFD simulations to predict blade-vortex interaction noise. In this paper, a brief validation of both methods against the HART II rotor is done. Design parametric studies with UPM are carried out for which single CFD simulations are placed to examine the correlation between both methods. In the end, an optimization with the panel code as well as CFD is conducted to see how good the final designs match. From this research it is observed that despite that CFD predicts too quiet noise carpets, the overall trends are plausible. They are contradicted by the panel code to a certain degree, especially for blade sweep and anhedral. It is discovered that using CFD directly with five design parameters and ten samples arrives at quieter rotors than using the panel method with seven parameters and 210 rotor samples.

Item URL in elib:https://elib.dlr.de/129024/
Document Type:Conference or Workshop Item (Speech)
Title:Progress in Aero-Acoustic Optimization Techniques in DLR's VicToria Project
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wilke, Gunther AndreasGunther.Wilke (at) dlr.dehttps://orcid.org/0000-0002-1915-5307
Date:3 January 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aero-acoustics, FW-H, BVI, HART II, higher order schemes, panel method, free wake, surrogate based optimization
Event Title:ONERA-DLR Aerospace Symposium 2019
Event Location:Paris, Frankreich
Event Type:Workshop
Event Dates:3.-5. Juni 2019
Organizer:ONERA - DLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - VicToria (old)
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, BS
Deposited By: Wilke, Gunther Andreas
Deposited On:25 Sep 2019 14:34
Last Modified:09 Dec 2019 09:18

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