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PhD Studentship: Experimental Measurements of Turbulent Flow Over Porous Liners

University of Southampton - Faculty of Physical Sciences and Engineering

Qualification Type: PhD
Location: Southampton
Funding for: UK Students
Funding amount: For UK students, Tuition Fees and a stipend of £18,622 tax-free per annum for up to 3.5 years.
Hours: Full Time
Placed On: 24th October 2023
Closes: 31st August 2024
 

Supervisory Team: Bharathram Ganapathisubramani and Swathi Krishna

PhD Supervisor: Bharathram Ganapathisubramani

Project description

Aircraft engines are the primary source of noise during take-off and landing. To mitigate this noise, modern engines are built with state-of-the-art porous liners that consist of a honeycomb core sandwiched between a solid plate at the bottom and a perforated sheet at the top that is exposed to the flow. The sound attenuation depends on the porosity, which is controlled by changing the perforations at the top and its alignment/orientation with the honeycomb structure under it. Although the sound attenuation mechanism is well examined, the aerodynamic penalty of using different types of liners is largely unknown. In fact, previous works suggest that the liners behave similarly to surface roughness and aerodynamic drag increases between 2% and 500% depending on the type of liner. We currently lack fundamental understanding and the predictive capability for aerodynamic drag over liners primarily because we are unable to access the near-surface information where there is interaction between flow within the substrate and the boundary layer over it.  In this experimental project, we aim to use the state-of-the-art refractive-index-matched facility to simultaneously measure the flow within the liner and the boundary layer over it. The goal is to carry out advanced 3D diagnostics to capture detailed flow information, gain new physical insights and use it to develop new predictive models for aerodynamic drag as well as other quantities.

We aim to build a diverse and inclusive team to tackle challenging problems where we develop new skills and expertise in our team members. Therefore, the project will be open-ended, and the details will be tailored to suit you. You will have a unique opportunity to work alongside other team members (PhD students and postdoctoral researchers) with different backgrounds and experience. You will the unique opportunity to be trained in using state-of-the-art diagnostics and advanced data-analysis methods that will enable you to pursue a career in academia or industry. Finally, you will be able to travel to international conferences to present your work and develop new collaborations with research groups around the world.

Further information on the type of projects carried out in our lab as well as information on current lab members can be found on our website (generic.wordpress.soton.ac.uk/bharath-lab).

If you wish to discuss any details of the project informally, please contact Bharathram Ganapathisubramani, Email: g.bharath@soton.ac.uk

Entry Requirements

A very good undergraduate degree (at least a UK 2:1 honours degree, or its international equivalent).

Closing date:

Applications should be received no later than 31 August 2024 for standard admissions, but later applications may be considered depending on the funds remaining in place.

Funding:

For UK students, Tuition Fees and a stipend of £18,622 tax-free per annum for up to 3.5 years.

How To Apply

Apply online: Search for a Postgraduate Programme of Study (soton.ac.uk). Select programme type (Research), 2024/25, Faculty of Physical Sciences and Engineering, next page select “PhD Engineering & Environment (Full time)”. In Section 2 of the application form you should insert the name of the supervisor Bharathram Ganapathisubramani

Applications should include:

  • Research Proposal
  • Curriculum Vitae
  • Two reference letters
  • Degree Transcripts/Certificates to date

For further information please contact: feps-pgr-apply@soton.ac.uk

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