Dr. Christopher AbramCore interest: development of advanced laser measurement techniques for reacting and non-reacting fluid flows, with the goal of improving our physical understanding in topics such as turbulent combustion, heat transfer, geophysical/astrophysical flows, fire research, bioimaging, multiple fields of automotive and aerospace engineering… The focus is on multi-dimensional simultaneous measurements of scalars (especially temperature) and velocity to probe complex flow interactions.
Thermographic phosphor particles can be used as a flow tracer in liquids and gases. The infinite variety of phosphors, in terms of composition (doped insulator, semiconductor, organic-inorganic hybrid…) and morphology (size, shape…), and the nature of the laser-particle interaction itself, means these sensor materials offer broad perspectives in developing new capabilities for flow measurements.
- 2017 - Visiting researcher (Marie Curie fellow), Dept. Mechanical and Aerospace Engineering Princeton University, USA
- 2014 - Postdoctoral Research Assistant, Lehrstuhl für Technische Thermodynamik Institut für Strömungstechnik und Thermodynamik, Otto-von-Guericke-Universität Magdeburg, Germany
- 2010 - 2014 PhD, Mechanical Engineering Department of Mechanical Engineering, Imperial College London, UK
- 2005 - 2009 MEng (First Class Honours), Mechanical Engineering Department of Mechanical Engineering, University of Bristol, UK
Project in collaboration with Prof. Yiguang Ju, Princeton University.
Flame synthesis of functional nanoparticles.
Research supported by European Union Horizon 2020 (Marie Curie global fellowship)
Current research projects (2014 - )
Development and application of flow measurements using thermographic phosphors
· Spectroscopic techniques for luminescence characterisation of phosphor particles;
· Collaboration with Universität der Bundeswehr München on the investigation of film cooling flows using thermographic phosphors.
PhD - High Repetition Rate Temperature and Velocity Imaging in Turbulent Flows using Thermographic Phosphors (2010 - 2014)
Research supported by a Doctoral Training Award funded through the Engineering and Physical Sciences Research Council (EPSRC). Examined by Prof. Bruno Renou and Dr. Guillermo Rein.
Development of a novel laser-based measurement technique 'thermographic PIV', using thermographic phosphor tracer particles to simultaneously image the temperature and velocity of fluid flows.
· Development, demonstration and validation of the technique.
· High-repetition rate imaging using high-speed laser and camera technology for time-resolved investigations of transient, coupled heat and mass transfer phenomena.
· Luminescence characterisation of a novel semiconductor phosphor for temperature measurements with increased sensitivity.
Research project for Toyota Motor Europe (2010 - 2014)
Detection of hydrogen peroxides in controlled auto-ignition engines.
· Development of UV LED-based detection of hydrogen peroxides and measurement of the reaction dynamics of dissociation products using spectrally-resolved absorption techniques.
· Operation and stabilisation of HCCI combustion in a modified 5-cylinder optical diesel engine.
· Application of developed diagnostics to detect combustion species.
Engineer, Engineering Department, Pendennis Shipyard, Cornwall, UK (2009 - 2010)
Fixing and refurbishing pumps; diesel engines; couplings, shafts and bearings; AC units; and generators (six-month refit of a 37 m yacht)
Masters research project (2008 - 2009)
Experimental investigation of free convection in particle-laden fluids
Batchelor degree research project (2007 - 2008)
Experimental study of fluidised granular flows
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