School of Civil, Environmental and Mining Engineering

Postgraduate research

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Current and completed research by our postgraduate students.

Contact

Alexis Espinosa Gayosso

Phone: (+61 8) 6488 7359
Fax: (+61 8) 6488 1015


Supervisors

Start date

Jan 2009

Submission date

Aug 2014

Curriculum vitae

Alexis Espinosa Gayosso CV
[rtf, 14.24 kb]
Updated 05 Jul 2012

Alexis Espinosa Gayosso

Alexis Espinosa Gayosso profile photo

Thesis

Numerical study of particle capture in environmental aquatic flows past multiple obstacles

Summary

Particle capture, whereby suspended particles contact and adhere to a solid surface(a `collector'), is an important mechanism in a range of environmental processes. In this research I use numerical simulations of flow to accurately quantify the rate of capture of particles by cylindrical collectors for a wide range of Reynolds numbers, relative particle sizes and relative densities.

Why my research is important

The term `particle capture' refers to the physical process by which suspended particles come into contact with a solid structure (`collector') and adhere to the collector's surface. One important example of particle capture in aquatic systems is the adhesion of particles to aquatic vegetation surfaces. This phenomenon defines the filtration and water purification capacity of vegetated wetlands. Particle capture is also of significant ecological importance in marine ecosystems; in particular, it controls the efficiency of seagrass pollination, suspension feeding (of, e.g., corals), and larval settlement. Despite its fundamental ecological importance, predictive capability for the rate of particle capture in aquatic systems is lacking.

Funding

  • International Postgraduate Research Scholarship (IPRS), Australian Government
  • CONACyT PhD Scholarship, Mexican Government

Transport and capture of particles (in magenta) for the flow induced by two cylinders on tandem at Reynolds number (Re) of 115. Non dimensional pressure is indicated by the color contours.
 

School of Civil, Environmental and Mining Engineering

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Last updated:
Thursday, 19 September, 2013 11:39 AM

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