Dunes under different conditions: fluid flow variation, topographies, and static objects

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• Willian Righi Assis (University of Campinas)
• Friday 16 June 2023, 13:00-14:00
• MR14, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

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We will be meeting for lunch at 1pm and the talk will be starting around 1:30pm. Please email us at damtp-gkb-request@lists.cam.ac.uk if you would like to join us for lunch.

Different types of bedforms can arise from the interplay between a fluid flow and a granular bed. The most common is the crescent-shaped dune, called Barchan, whose mid-line could be assumed to behave as a two-dimensional dune. They can be found in some environments, such as deserts, rivers, or even on the surface of Mars. In this study, we compare the morphology of the midline of barchans with 2D dunes and track the evolution of dunes under bi-modal changes in the flow direction. In addition, it will be presented results from dunes interacting with static objects and how different topographies can affect dunes’ morphology.

This talk is part of the G.K. Batchelor Laboratory lunchtime seminar series.

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