Turbulence measurements in a shallow tidal estuary : analysis based on triple decomposition
Suara, K.A., Brown, R.J., & Chanson, H. (2014) Turbulence measurements in a shallow tidal estuary : analysis based on triple decomposition. In The Proceedings of the 19th Australasian Fluid Mechanics Conference, RMIT University, Melbourne, Australia.
In an estuary, mixing and dispersion are the result of the combination of large scale advection and small scale turbulence which are both complex to estimate. A field study was conducted in a small sub-tropical estuary in which high frequency (50 Hz) turbulent data were recorded continuously for about 48 hours. A triple decomposition technique was introduced to isolate the contributions of tides, resonance and turbulence in the flow field. A striking feature of the data set was the slow fluctuations which exhibited large amplitudes up to 50% the tidal amplitude under neap tide conditions. The triple decomposition technique allowed a characterisation of broader temporal scales of high frequency fluctuation data sampled during a number of full tidal cycles.
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|Item Type:||Conference Paper|
|Keywords:||Turbulence analysis, Triple decomposition, Reynolds averaging, Field experiment, Estuary, Tide, Resonance, Mixing and advection|
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2014 [please consult the authors]|
|Deposited On:||14 Jan 2015 00:15|
|Last Modified:||20 Feb 2015 01:12|
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