PhD Studentship: Tip Vortices of Oscillating Wings

University of Bath - Department of Mechanical Engineering

Supervisor: Prof. Ismet Gursul and Dr Zhijin Wang

Email Contact: I.A.Gursul@bath.ac.uk, Z.Wang@bath.ac.uk

Time-dependent structure and circulation of tip vortices shed from oscillating wings may influence various aerodynamic aspects: induced drag, gust response, aircraft wake hazard, formation flight, helicopter blades in forward flight, etc. As the wing pitches or plunges both the trajectory and strength of vortices are expected to vary. Water tunnel and wind tunnel experiments will be conducted for oscillating wings to investigate these aspects. Flow visualization, force measurements, Particle Image Velocimetry measurements will be performed. Vortex trajectories will be studied for different wing oscillation frequencies. Quantitative measurements of the velocity field will allow the analysis of the most energetic unsteady modes and instabilities by means of Proper Orthogonal Decomposition method. Active and passive flow control methods will be investigated to explore how the unsteady tip vortices can be controlled for specific purposes.

A Home/EU award will provide full tuition fees, an annual Training Support Fee of £1,000, and a tax-free maintenance payment of £14,553 (2017-8 rate) for up to 3.5 years.

An Overseas award (3 years): Provides tuition fee, an annual Training Support Fee of £1,000, but no stipend.

The successful applicant will ideally have graduated (or be due to graduate) with an undergraduate Masters first class degree and/or MSc distinction (or overseas equivalent).

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Type / Role:

PhD

Location(s):

South West England