Improving Vibration Resilience in Hydropower Intake Screens

About the research project

Hydropower is playing an increasingly important role in the transition to renewable energy by providing both zero-emission electricity generation and the operational flexibility needed to balance variable energy demand. Pumped-storage hydropower further enhances renewable energy integration by offering efficient, large-scale energy storage, enabling greater utilisation of intermittent energy sources such as wind and solar power.

Within these systems, intake screens, also known as trash racks, are a critical infrastructure component used to prevent debris from entering power stations, where it can damage equipment, reduce efficiency, and potentially lead to costly failures. However, trash racks are known to experience flow-induced vibrations under certain hydraulic conditions due to fluid-structure interactions (FSI) between flowing water and the rack bars. In particular, vortex-induced vibration (VIV) has been associated with fatigue damage, structural cracking, and in extreme cases, component failure. 

This project investigates the combined effects of water flow and debris accumulation on the vortex-induced vibration behaviour of trash rack systems used in hydropower and pumped storage facilities. As debris accumulates on the rack surface, partial blockage alters flow distribution through the structure and influences vortex shedding characteristics around the bars, potentially modifying the nature and severity of fluid-structure interactions.

The project aims to develop a deeper understanding of the coupled hydraulic and structural processes governing trash rack performance under realistic operating conditions. The research will examine how key factors, including flow conditions, intake geometry, bar profile, and debris accumulation, influence fluid-structure interactions and vibration response. The outcomes will provide practical guidance for the design, operation, and management of trash rack systems, improving infrastructure reliability, reducing maintenance requirements and costs, and enhancing the resilience of hydropower and pumped storage facilities.

The project is suitable for a civil or mechanical engineer with an interest in hydraulics, structural vibrations, computer modelling and/or experimental data analysis. The project is primarily simulations-based with experimental validation studies using the Hydraulics Laboratory at School of Engineering, University of Tasmania. The project may also involve opportunities for on-site measurements and/or an industry internship.

Primary supervisor

Meet Associate Professor Alan Henderson

Funding

Applicants will be considered for a Research Training Program (RTP) scholarship or Tasmania Graduate Research Scholarship (TGRS) which, if successful, provides:

• a living allowance stipend funded by University of Tasmania of $34,315 per annum for 3.5 years (PhD) or 2 years (Master by Research)
• a relocation allowance of up to $2,000
• a tuition fees offset covering the cost of tuition fees for up to four years (domestic applicants only)

A tuition fee offset may be offered to eligible international applicants following competitive assessment 

As part of the application process you may indicate if you do not wish to be considered for scholarship funding.

Other funding opportunities and fees

For further information regarding other scholarships on offer, and the various fees for undertaking a research degree, please visit our Scholarships and fees on research degrees page.

Eligibility

Applicants should review the Higher Degree by Research minimum entry requirements.

Ensure your eligibility for the scholarship round by referring to our Key Dates.

Selection criteria

The project is competitively assessed and awarded. Selection is based on academic merit and suitability to the project as determined by the College.

Additional desirable selection criteria specific to this project:

• The project is suitable for a civil or mechanical engineer with an interest in hydraulics, structural vibrations, computer modelling and/or experimental data analysis.

Application process

1. Select your project, and check that you meet the eligibility and selection criteria, including citizenship;
2. Contact Associate Professor Alan Henderson to discuss your suitability and the project's requirements; and
3. In your application:
   • Copy and paste the title of the project from this advertisement into your application. If you don’t correctly do this your application may be rejected.
   • Submit a signed supervisory support form, a CV including contact details of 2 referees and your project research proposal.
4. Apply prior to 1 October 2026.

Full details of the application process can be found under the ' How to apply ' section of the Research Degrees website.

Following the closing date applications will be assessed within the College. Applicants should expect to receive notification of the outcome by email by the advertised outcome date.

Apply nowExplore other projects