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CFD Prediction of Air Flow Past a Full Helicopter Configuration

Biava, Massimo and Khier, Walid and Vigevano, Luigi (2011) CFD Prediction of Air Flow Past a Full Helicopter Configuration. Aerospace Science and Technology. Elsevier. DOI: 10.1016/j.ast.2011.08.007. ISSN 1270-9638.

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Abstract

The present study is one of the first attempts to exploit the GOAHEAD data base to perform a code-tocode evaluation on complete helicopter aerodynamics. The numerical results of two GOAHEAD partners, the German Aerospace Center (DLR) and Politecnico di Milano (PoliMi) are presented and compared to experimental measurements. The study also addresses an evaluation of two different approaches to predict helicopter flows. The first, applied by DLR, accounts for rotor trim and elastic effects by weak fluid–structure coupling. The PoliMi approach, on the other hand, enforces a prescribed kinematics, taken directly from the experiment, on a rigid blade. The simulations refer to a complete helicopter wind– tunnel model, featuring a scaled NH90 fuselage, the ONERA 7AD main rotor, a scaled BO105 tail rotor, a rotor hub and a pylon, all located inside the 8 m × 6 m test section of the DNW low-speed wind tunnel. The flight conditions correspond to cruise flight at Ma = 0.204 and fuselage attitude α = −2.5◦. The comparisons demonstrate the capability of present unsteady RANS solvers to predict flow fields around complete helicopters.

Document Type:Article
Title:CFD Prediction of Air Flow Past a Full Helicopter Configuration
Authors:
AuthorsInstitution or Email of Authors
Biava, MassimoAgustaWestland-Politecnico Advanced Rotorcraft Center S.r.I. (AWPARC)
Khier, Walidwalid.khier@dlr.de
Vigevano, LuigiDipartimento di Ingegneria Aerospaziale, Politecnico di Milano
Date:2011
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1016/j.ast.2011.08.007
Publisher:Elsevier
ISSN:1270-9638
Status:Published
Keywords:Complete helicopter fl�ow fi�eld, Unsteady RANS, Fluid-�structure coupling
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research, Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research, L RR - Rotorcraft Research
DLR - Research theme (Project):L - Flight Physics, L - Simulation & Validation, L - The Virtual Aerodynamic Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Dr.-Ing. Walid Khier
Deposited On:14 Jun 2012 10:12
Last Modified:12 Dec 2013 21:41

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