IMT Seminar: Anthony Ojo - Laser diagnostics for understanding transient near-wall heat transfer processes



Friday, October 9, 2020 - 14:00 to 15:00


In thermal machines, for example, internal combustion (IC) engines, heat transfer from hot gases to surrounding walls are prevalent; with the gas temperatures rapidly decreasing to the wall temperatures. This results in parasitic energy losses and creates the need to better understand the heat transfer processes occurring near walls. Laser diagnostics promote our understanding of heat transfer phenomena in gases and on wall surfaces. Here, two of such optical techniques will be presented, namely, phosphor thermometry and Coherent anti-Stokes Raman Spectroscopy for surface and gas temperature measurements respectively. This talk also presents the simultaneous implementation of these techniques together with flame front imaging, performed in a fixed-volume chamber that mimics a mild compression/expansion process with timescales like in IC engines. The measurements obtained from implementing these techniques provide further insight into gaseous heat losses through the thermal boundary layer during highly transient combustion processes.


Anthony is a research associate at the University of Edinburgh’s Institute for Multiscale Thermofluids. He obtained his PhD in Mechanical Engineering from Imperial College London. His current research focuses on the application of laser diagnostics to study thermal heat loss to walls and their effect on near-wall gas distributions in a fixed-volume chamber under transient pressure conditions.

Anthony Ojo
Anthony Ojo

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