School of Civil Engineering

Projects in hydraulic engineering

Project 1. Energy dissipation and air entrainment on stepped spillways (CIVL4580 only).

Supervisor:             Prof. Hubert Chanson h.chanson@uq.edu.au

In the last few decades, a number of experimental investigations of stepped spillways took place with a focus on the energy dissipation and air-entrainment processes on stepped spillways. Dimensional analysis and dynamic similarity considerations highlighted the potential for scale effects in small-size laboratory studies. Herein a physical study is performed on a large size stepped spillway channel. Detailed air-water flow measurements are conducted systematically for a range of flow conditions at large Reynolds The relationship between rate of energy dissipation and turbulence levels is investigated.

Available to:            Civil Engineering, Environmental Engineering.

 

Project 2. Unsteady rapidly-varied open channel flow: physical modelling (CIVL4580 only).

Supervisor:             Prof. Hubert Chanson h.chanson@uq.edu.au

In an open channel, a sudden drop in free-surface elevation is associated with the development of a negative wave. While some simple analytical solution is widely described in textbooks, little research was conducted to date on the unsteady turbulence properties beneath negative waves. A series of new physical experiments will be conducted in a rectangular channel. The unsteady free-surface profile and turbulence characteristics will be measured in a negative wave propagating upstream against an initially steady flow using non-intrusive acoustic displacement meters, video imagery and acoustic Doppler velocimetry (ADV).

Available to:            Civil Engineering, Environmental Engineering.

 

Project 3. Fish passage in culverts: hydraulic engineering (CIVL4560 & CIVL4580).

Supervisor:             Prof. Hubert Chanson h.chanson@uq.edu.au

This project will review the design of culvert to facilitate fish passage. After a review of the literature, the project will focus on designs suitable to the Australian environment and the Australian fauna.

Available to:            Civil Engineering, Environmental Engineering.

 

Project 4. Energy dissipation and aeration in hydraulic jumps (CIVL4580 only).

Supervisor:             Prof. Hubert Chanson h.chanson@uq.edu.au

In an open channel, the transformation from a supercritical flow into a subcritical flow is a rapidly varied flow with large turbulent fluctuations, intense air entertainment and substantial energy dissipation called a hydraulic jump. New experiments were conducted to quantify its fluctuating characteristics in terms of free-surface and two-phase flow properties for a wide range of Froude numbers (3.8 < Fr1 < 8.5) at relatively large Reynolds numbers.

Available to:            Civil Engineering, Environmental Engineering.

 

Project 5. Tidal bore hydrodynamics: processing and analyses of field work data (CIVL4560, Masters project)

Supervisor:             Prof. Hubert Chanson h.chanson@uq.edu.au

When a river mouth has a flat, converging shape and when the tidal range exceeds 4 to 5 m, the river may experience a tidal bore. A tidal bore is basically a hydrodynamic shock and a series of waves propagating upstream in a river as the tidal flow turns to rising. While physical modelling and analytical solution is possible with simple boundary conditions, little research has been conducted to date in the field. A series of new field measurements was recently conducted in the Garonne River tidal bore. The field works' extensive data set will be processed and analysed to gain an unique understanding of this complicated and violent geophysical process.

Available to:            Civil Engineering.