Southampton Univ 招聘博士生
注意这个phd studentship 只对欧盟学生是全奖. 对中国籍学生, 必须补足£10,495 /年 的学费. 我暂时还没有渠道申请到经费支持这部分. 如果你有能力支付(或申请到相关经费支持), 那么你可以申请. 其它情况见下.A PhD studentship is now available in the Aerodynamics & Flight Mechanics
research group, School of Engineering Sciences (SES), which fully covers
University tuition fees (at EU/UK level only**) and provides a tax-free bursary
of £13,290 per year, rising annually (each October) in line with the UK
Government (EPSRC) recommended rate, for a 3-year duration.
**EU/UK fees £3390 p.a., Overseas fee £13,885 p.a. (figures subject to increase).
EU and UK applicants are eligible for full funding, but there is no additional
funding available for overseas fees.Therefore overseas applicants will be
required to pay the fees difference from other sources (i.e. £10,495 for
2009/10). If you are not able to fund the fees difference, then it will not be
possible to consider your application.
Project description:
Large wind turbines are being installed throughout the UK and often in regions
with complex meteorology and/or topography (e.g. involving wind gusts,
turbulence, icing), which affect turbine performance (energy output, noise
emission etc), life expectancy and safety.For example, a sudden change of wind
direction puts the wind turbine under a yawed condition before the yaw drive
adjusts the rotor to face into the wind again.Under yawed conditions,
pseudo-sinusoidal inflow angle oscillations can elicit dynamic stall, which
significantly intensifies aerodynamic load production.These oscillations may
also significantly amplify the vortex shedding, which can affect downwind turbines.
It is very expensive to conduct experiments to study such problems.Although
the Computational Fluid Dynamics (CFD) approach is a cheaper alternative, it
still faces many challenges.Direct Numerical Simulation and Large-Eddy
Simulation (DNS & LES) are only capable of accurately simulating low-Re flows
for such applications.On the other hand Unsteady Reynolds Averaged
Navier-Stokes (URANS) approaches are less than adequate for the prediction of
transition from laminar to turbulent flow, flows in which the time scale of the
external driving mechanism is of the same order as the turbulence time scale, etc.
This proposal suggests, firstly, an LES study of low-Re flows around an
oscillating airfoil, to investigate the transition, separation, vortex shedding
and dynamic stall behaviour.The computations will be validated against
available data in the literature.Secondly, a combined LES-RANS approach (with,
e.g., a transitional RANS model in the near wall region) will be carefully
designed (using our recently developed efficient turbulence generator at the
interface between LES and RANS) and validated against low-Re results.The
combined LES-RANS approach will then, finally, be used for flows over full scale
wind turbine airfoils and three-dimensional blades in abnormal environments, and
to provide a prospect for aerodynamic control.
The School of Engineering Sciences at the University of Southampton has an
international reputation for research excellence. In the 2008 UK Research
Assessment Exercise, the School (in collaboration with the Institute of Sound &
Vibration Research) ranked second in the total number of Unit 28 academics whose
research was deemed world leading or internationally excellent.
The School is a diverse community which is committed to creating an inclusive
working and learning environment in which all individuals are equally treated
and valued, and can achieve their potential. The School considers all
studentship applications in relation to academic criteria and regardless of the
individual's race, nationality, gender, or belief.
Entry requirements: Candidates will have a first class or upper second class
degree (or its equivalent) in relevant disciplines, e.g. Applied Mathematics,
Mechanical Engineering, Aeronautical Engineering, Ship Science and Physics.
The successful candidate will work with a group of highly motivated, first class
research students in the areas of Aerodynamics and Flight Mechanics.
The studentship is at the standard EPSRC rate (Engineering and Physical Sciences
Research Council), commencing on 1 October 2009.
Closing date for applications: A rolling deadline applies.
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