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Validation of Actuator Disk Simulations of CROR Propulsion Systems at Low-Speed Flight Conditions

Marquez Gutierrez, Carlos Omar and Stürmer, Arne and Clemen, Carsten and Grimminger, Andreas (2012) Validation of Actuator Disk Simulations of CROR Propulsion Systems at Low-Speed Flight Conditions. 30th AIAA Applied Aerodynamics Conference, 25.-28. Juni 2012, New Orleans, LA, USA.

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Abstract

In the present investigation, a validation of the Actuator Disk (AD) model implemented in the DLR-TAU Reynolds-Averaged Navier-Stokes (RANS) solver is performed for the simulation of Contra-Rotating Open Rotor (CROR) propulsion systems. The analysis focuses on a 12x9 CROR in pusher con�guration at model scale and low speed conditions in isolated and semi-installed arrangements. The actuator disk computations are validated with unsteady computations (uRANS) of the system with rotating blades. For the modeling of the actuator disks, data bases of blade airfoils are computed in 2D to predict the forces produced by the blades at different radial stations of the disk. For this purpose, two approaches for the calculation of the blade forces are performed. The fi�rst approach considers the resulting velocity produced by the free stream velocity and the rotational speed, assuming that the free stream velocity is aligned with the rotor rotation axis. The second approach considers the e�ffect of a deviation of the oncoming flow approaching the rotor planes. For the validation of the model, rotor performance and wake velocity profi�les are extracted and a comparison of both numerical approaches is performed. The results obtained, show a very good agreement between the performance numbers obtained from both numerical methods uRANS and AD. Also a good representation of the flow in the propwake is obtained with the simulation using AD model compared with the uRANS simulation.

Item URL in elib:https://elib.dlr.de/77228/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Validation of Actuator Disk Simulations of CROR Propulsion Systems at Low-Speed Flight Conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Marquez Gutierrez, Carlos OmarUNSPECIFIEDUNSPECIFIED
Stürmer, ArneUNSPECIFIEDUNSPECIFIED
Clemen, CarstenRolls-Royce Deutschland Ltd & Co KGUNSPECIFIED
Grimminger, AndreasAirbus Operations Ltd.UNSPECIFIED
Date:June 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Contra-Rotating Open Rotor, CROR, Aktuator Disk, Propeller
Event Title:30th AIAA Applied Aerodynamics Conference
Event Location:New Orleans, LA, USA
Event Type:international Conference
Event Dates:25.-28. Juni 2012
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Marquez Gutierrez, Carlos Omar
Deposited On:12 Sep 2012 09:53
Last Modified:12 Dec 2013 21:46

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