Staff Profile
Dr Vishnu Mohan completed his undergraduate degree in Mechanical engineering from the National Institute of Technology Calicut in 2016. By 2021 he had obtained his masters and PhD in Aerospace engineering from the Indian Institute of Technology Madras. His PhD work dealt with the stability and continuum breakdown regimes in compressible mixing layers. Currently, he is working on the EPSRC-funded project "Turbulence at exascale: application to wind energy, green aviation, air quality and net-zero combustion".
Dr Vishnu's interest is in theoretical understanding and numerical simulation of various fluid flow phenomena.
Personal Webpage: https://vishnu-mohan-1993.github.io/
Rarefied Gas Flows
A finite volume-based solver for the Boltzmann transport equation is used to study the effect of compressibility and rarefaction on the development of mixing layers. Different aspects of the flow, such as Kelvin-Helmholtz instability (KHI) and the breakdown of continuum hypothesis, have been studied. We identified five different regimes of KHI in the Reynolds-Mach-Knudsen parameter space. An increase in the Knudsen number leads to deviation from the Navier-Stokes-Fourier equation. We identified three distinct regimes of breakdown in continuum hypothesis. Gradient Knudsen number was identified, which scaled the local departure from the Navier-Stokes-Fourier equation from continuum hypothesis.
Hydrogen Combustion
Work under progress.
-
Article
- Mohan V, Herbert M, Klein M, Chakraborty N. A Direct Numerical Simulation assessment of turbulent burning velocity parametrizations for non-unity Lewis numbers. Energies 2023, 16(6), 2590.