Siddhartha Verma

TL;DR: This work uses qualitative visualizations of emulated coughs and sneezes to examine how material- and design-choices impact the extent to which droplet-laden respiratory jets are blocked, and outlines the procedure for setting up simple visualization experiments using easily available materials.

TL;DR: In this article, the authors show that fish can improve their sustained propulsive efficiency by placing themselves in appropriate locations in the wake of other swimmers and intercepting judiciously their shed vortices.

TL;DR: In this article, the performance of face shields and exhalation valves in impeding the spread of aerosol-sized droplets is examined. And the authors suggest that to minimize the community spread of COVID-19, it may be preferable to use high quality cloth or surgical masks that are of a plain design, instead of face shield and masks equipped with exhale valves.

TL;DR: The present results show that two self-propelled swimmers can be synchronised by adapting their motion patterns to compensate for flow-structure interactions and can exploit the vortical structures of their flow field so that synchronised swimming is energetically beneficial.

TL;DR: Qualitative visualizations suggest that to minimize the community spread of COVID-19, it may be preferable to use high quality cloth or surgical masks that are of a plain design, instead of face shields and masks equipped with exhale valves.