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Phd Studentship Opportunity in Advanced Computer Modelling of Turbine Stator Well Flow and Heat Transfer

University of Surrey

Qualification Type: PhD
Location: Guildford
Funding for: UK Students
Funding amount: £18,000 stipend, plus the studentship fully covers University fees, subject to EPSRC eligibility criteria
Hours: Full Time
Placed On: 23rd April 2019
Closes: 31st July 2019
 

Studentship description

This research will investigate the complex flow and heat transfer occurring in gas turbines using advanced computational fluid dynamics, and aiming to improve current design methods and understanding in industry. 

Industrial Gas Turbine engines are the source of the most fuel efficient electrical power generation in the world. These machines generate work by directing their combustion products through multiple stages of blades that turn a shaft that is connected to a generator. The turbine blades are attached along the circumference of a disk, which is exposed to high centrifugal loads due to its high speed and high temperatures due to the proximity to the combustion products. When more than one turbine stage is connected to the shaft, the disks are mechanically connected and a cavity is created in the vicinity of this connection which is referred to as a ‘stator well’. An Industrial Gas Turbine must withstand tens of thousands of hours of safe and reliable service, so understanding the flow conditions and temperatures in the stator well is important. Previous work has shown that complex unsteady flows can occur, with interaction of rotating cavity or seal flow modes and the main gas path flow. 

This research will investigate the complex flow and heat transfer occurring in gas turbines, aiming to improve current design methods and understanding in industry. Initial investigations will employ advanced computational fluid dynamics (CFD) models to investigate flow regimes relevant to the industrial partner Siemens Power. Where appropriate, comparisons will be made with experimental data from the University of Bath. Further studies are expected to develop and evaluate hybrid modelling strategies suitable for use in industry. These will be physics-based but may include use of correlations of experimental and computational results. 

This project will be conducted in collaboration with Siemens Power and the University of Bath, where complimentary experimental investigations are conducted. Project supervisors are Professor John Chew and Dr Feng Gao. Prof. Chew was the founding director of the Rolls-Royce TFSUTC at Surrey from 2003 to 2013, and is an established international authority in turbomachinery thermo-fluid systems and rotating flows. Dr Gao joined the University from Ecole Centrale de Lyon in 2015 and is an expert in large eddy simulation. 

The project will start in October 2019 and will end in September 2022.

Entry requirements

A first class or good upper second degree in Engineering or Mathematics. 

Funding

The studentship fully covers University fees, subject to EPSRC eligibility criteria, with a stipend of £18,000 p.a. for up to 4 years.

How to apply

Applicants should apply through the Aerodynamic and Environmental Flow course page https://www.surrey.ac.uk/postgraduate/aerodynamic-and-environmental-flow-phd 
Please clearly state the studentship you are applying for and the supervisor.

Closing date for applications:

Wednesday 31st July 2019

Application enquiries

Professor John Chew, j.chew@surrey.ac.uk 01483 686284

   
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