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Main Title: Numerical Assessment of Virtual Control Surfaces for Load Alleviation on Compressor Blades
Author(s): Motta, Valentina
Malzacher, Leonie
Peitsch, Dieter
Type: Article
Language Code: en
Abstract: Virtual control surfaces for the optimization of steady and unsteady airloads on a compressor cascade are assessed numerically. The effects of mechanical surfaces are realized with plasma actuators, located both on the pressure and on the suction side of the blade trailing edge. Suction side plasma actuation is thought to reproduce the effects of mechanical wing spoilers, whereas pressure side plasma actuation is meant to act as a mechanical Gurney flap. Indeed, actuators are operated to generate an induced velocity field that is opposite relative to the direction of the freestream velocity. As a consequence, controlled recirculating flow areas are generated, which modify the effective mean line shape, as well as the position of the Kutta condition application point—and in turn the developed airloads. Proper triggering of pressure/suction side actuation is found to be effective in altering the blade loading, with effects comparable to those of mechanical control surfaces. Traveling wave mode simulations show that significant reductions in the peaks of the blade pitching moment can be achieved on the whole spectrum of interblade phase angles. It is proved that virtual control surfaces can provide effective load alleviation on the cascade, with potential remarkable reduction of fatigue phenomena.
Issue Date: 17-Jan-2018
Date Available: 16-Sep-2019
DDC Class: 600 Technik, Technologie
Subject(s): unsteady aerodynamics
adaptive structures
computational aeroelasticity
Sponsor/Funder: DFG, SFB 1029, TurbIn - Signifikante Wirkungsgradsteigerung durch gezielte, interagierende Verbrennungs- und Strömungsinstationaritäten in Gasturbinen
Journal Title: Applied Sciences
Publisher: MDPI
Publisher Place: Basel
Volume: 8
Issue: 1
Article Number: 125
Publisher DOI: 10.3390/app8010125
EISSN: 2076-3417
Appears in Collections:SFB 1029 - TurbIn » Publications
FG Luftfahrtantriebe » Publications

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