elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme

Wilke, Gunther (2016) Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme. In: Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme. 42nd European Rotorcraft Forum, Lille, France.

[img] PDF (Presentation)
4MB
[img] PDF (Paper)
3MB

Abstract

One major diffculty in the design of quiet rotor blades is the correct numerical prediction of blade vortex interaction (BVI) noise in descent flight. Current second order spatial discretization schemes inherently have too much numerical dissipation to correctly conserve vorticity in the computational fluid dynamics (CFD) simulation. Higher order methods have proven their worthiness to alleviate this problem, yet are costly in terms of computational resources. In this paper, the 4th order implicit compact Pade scheme based on the finite difference formulation of the RANS equations is employed to convect the vortices in the simulation. The approach is paired with the classical finite volume approach with the Jameson-Schmidt-Turkel (JST) scheme. The robustness and flexibility of the JST scheme are exploited in the nearfield of the rotor blades and fuselage, while in the mid- and farfield the Pade scheme is utilized. This approach is validated against the experimental data of the HART II wind tunnel campaign. Different grid resolutions are examined as well as simulation strategies ranging from inviscid isolated rotor simulation up to viscous simulation including the fuselage. This hybrid simulation technique demonstrates the usefulness due to its high efficiency, while for design purposes the simplified physics yield an additional speed-up of the turn-around time.

Item URL in elib:https://elib.dlr.de/106577/
Document Type:Conference or Workshop Item (Speech)
Title:Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wilke, Gunthergunther.wilke (at) dlr.dehttps://orcid.org/0000-0002-1915-5307
Date:6 September 2016
Journal or Publication Title:Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Wilke, Gunthergunther.wilke@dlr.de
Status:Published
Keywords:Aero-acoustic computation, FW-H, BVI, HART II
Event Title:42nd European Rotorcraft Forum
Event Location:Lille, France
Event Type:international Conference
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 > Helicopters
Deposited By: Wilke, Gunther Andreas
Deposited On:14 Oct 2016 13:35
Last Modified:31 Jul 2019 20:03

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.