A Hybrid Navier-Stokes/Vortex Particle Wake Methodology for Modeling
Helicopter Rotors in Forward Flight and Maneuvers
Luke Battey
October 20th, 2017
MK 325, 11 AM – 12 noon
Maneuvering flight and high-speed flight are critical design points in any rotorcraft’s operating envelope. These conditions give complex flow phenomena, creating high stresses and vibrations. To accurately predict the flow properties over the relatively flexible rotor blades, coupling between computational fluid dynamics (CFD) and computational structural dynamics (CSD) is required.
In this work, GT-Hybrid, a hybrid wake rotorcraft CFD code that is coupled to DYMORE, is used. A vortex particle method has been implemented in place of the existing lattice methodology. Results have been obtained for two forward flight simulations and are in good agreement with flight test and wind tunnel data.
It is proposed that the GT-Hybrid solver with the vortex particle method be further evaluated by simulating three maneuvering flight conditions – a pull-up maneuver, and two dive-turn maneuvers.
Committee Members
Dr. Lakshmi N. Sankar, Advisor
School of Aerospace Engineering
Georgia Institute of Technology
Dr. Daniel P. Shrage
School of Aerospace Engineering
Georgia Institute of Technology
Dr. J.V.R Prasad
School of Aerospace Engineering
Georgia Institute of Technology
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