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Comparisons of Different Spatial Schemes and Limiters for Helicopter Flows

Wilke, Gunther Andreas (2021) Comparisons of Different Spatial Schemes and Limiters for Helicopter Flows. Springer International Publishing. New Results in Numerical and Experimental Fluid Mechanics XIII, virtual. doi: 10.1007/978-3-030-79561-0_40. ISBN 978-3-030-79561-0.

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Official URL: https://link.springer.com/chapter/10.1007%2F978-3-030-79561-0_40

Abstract

The requirements for a computational fluid dynamics solver to simulate the vortex-dominated helicopter rotor flows correctly are high. In recent years, many higher order methods and strategies have evolved to meet these requirements. This paper investigates a 3rd and 4th order accurate upwind scheme and compares this with a hybrid approach, where a 2nd order solution is generated near the rotor blades and a 4th order solution is computed in the wake. The investigated test cases are an inviscid vortex, an inviscid NACA0012 computation at zero-lift, two model rotors in hover and one model rotor in descent flight. From the exploration of different combinations of numerical schemes for the inviscid flux computation, it is seen that higher order methods are necessary to capture the trends of helicopter flows correctly. A modification to the upwind scheme is proposed to further decrease numerical dissipation and increase tip-vortex preservation. The outcome is that the 4th order accurate upwind scheme with the added modification prevails over the existing strategy.

Item URL in elib:https://elib.dlr.de/143168/
Document Type:Conference or Workshop Item (Other)
Title:Comparisons of Different Spatial Schemes and Limiters for Helicopter Flows
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wilke, Gunther AndreasGunther.Wilke (at) dlr.dehttps://orcid.org/0000-0002-1915-5307
Date:14 July 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:151
DOI :10.1007/978-3-030-79561-0_40
Page Range:pp. 418-427
Editors:
EditorsEmailEditor's ORCID iD
Dillmann, AndreasUNSPECIFIEDUNSPECIFIED
Heller, GerdUNSPECIFIEDUNSPECIFIED
Krämer, EwaldUNSPECIFIEDUNSPECIFIED
Wagner, ClausUNSPECIFIEDUNSPECIFIED
Publisher:Springer International Publishing
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISBN:978-3-030-79561-0
Status:Published
Keywords:Higher order schemes HARTII SLAU2 JST Pade MUSCL
Event Title:New Results in Numerical and Experimental Fluid Mechanics XIII
Event Location:virtual
Event Type:national Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Rotorcraft and Validation
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, BS
Deposited By: Wilke, Gunther Andreas
Deposited On:15 Jul 2021 07:33
Last Modified:15 Jul 2021 07:33

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