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Department of Applied Mathematics and Theoretical Physics

I am a Post-doctoral Research Associate at DAMTP in the University of Cambridge, UK, working with Prof. Eric Lauga. My research interests are modelling and simulation of the hydrodynamics of 'micro-swimmers', and biological fluid flows. I use concepts from applied mathematics and numerical analysis to solve problems involving the interaction between (low Reynolds number) hydrodynamics and biology, physical chemistry or electro-magnetism.

I am working on computational modelling of mucus flow in human sinuses. Prior to my current position, I was a Post-doctoral Researcher at LadHyX, Ecole Polytechnique, France, where I worked with Prof. Sébastien Michelin to develop the first insights on self-propulsion of chemical-reaction-driven ''active'' drops along rigid surfaces. I obtained my PhD in 2019 from Purdue University, USA, under the supervision of Prof. Arezoo Ardekani. In my PhD, I used mathematical models to show how chemotaxis (directional locomotion of bacteria along nutrient gradients) and passive hydrodynamic effects combine to aid bacterial colonization, and degradation, of nutrient sources like oil drops. I completed my B.Tech. in Mechanical Engineering and M.Tech. in Thermal Science and Engineering from the Indian Institute of Technology Kharagpur, in 2014.

I also enjoy teaching fluid mechanics, and disseminating my research via thorough, pedagogical presentations.

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Publications

Combined influence of hydrodynamics and chemotaxis in the distribution of microorganisms around spherical nutrient sources.
N Desai, AM Ardekani
– Phys Rev E
(2018)
98,
012419
Hydrodynamics-mediated trapping of micro-swimmers near drops
N Desai, VA Shaik, AM Ardekani
– Soft Matter
(2018)
14,
264
Transport of particles, drops, and small organisms in density stratified fluids
AM Ardekani, A Doostmohammadi, N Desai
– Physical Review Fluids
(2017)
2,
100503
Modeling of active swimmer suspensions and their interactions with the environment.
N Desai, AM Ardekani
– Soft Matter
(2017)
13,
6033
Capillary filling under electro-osmotic effects in the presence of electromagneto-hydrodynamic effects
N Desai, U Ghosh, S Chakraborty
– Physical Review E
(2014)
89,
063017
Thermal Characteristics of Streaming Potential Mediated Flows of Non-Newtonian Fluids with Asymmetric Boundary Conditions and Steric Effect
R Agarwal, N Desai, J Chakraborty, R Dey, S Chakraborty
– International Journal of Micro-Nano Scale Transport
(2013)
4,
147
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H1.04