Jonathan Finn

Background

I received an MEng in Mechanical Engineering from Imperial College London in 2016. As part of the degree I completed a 12 month industrial placement at Cummins Ltd in the Gas Engineering department.

Research Interests

My main interests are in supersonic flow, compressible turbulence and combustion. Extreme flow conditions can be found in many engineering applications, for example in the combustion chambers of turbojets, scramjets and rocket engines where modelling of compressible turbulent mixing is important in the design optimisation of new devices. In Inertial Confinement Fusion experiments the prediction of transonic turbulence driven by the Rayleigh-Taylor and Richtmyer-Meshkov instabilities is required to estimate the efficiency of Deuterium-Tritium mixing. In Astrophysical fluids the interaction of shocks, jets and winds with inhomogeneous regions leads to compressible turbulent mixing driven by hydrodynamic instabilities. In these applications high Reynolds numbers preclude the use of DNS and LES, especially for engineering design calculations. The use of turbulence models can extend the simulation physics to include the effects of turbulence while minimising computational expense. The aim of my doctoral project is to implement different sub-grid turbulence models (both single and multifluid) and to develop these models further.

Why I chose the CDT in Fluid Dynamics

I applied to the CDT primarily due to my interest in fluid dynamics. During my undergraduate degree I specialised in Thermofluids but was uncertain about what area of fluids most interested me. The 1st year of the program gave the opportunity to consider different applications of fluids which was beneficial to make an informed choice of PhD project. Additionally the cohort structure of the CDT has provided a good support network during the research project.