This tf»es»s to protected by the Copyright, Designs and Patent* Act 1988. No reproduction is p«rroitt«d without consent of the author. It is also protected by the Creative Commons tic«nee allowing Attrtbutions-Non-commerciaJ-No derivatives. for eompicttofi by »»• Ptew* Jiwltart* If ttwp» ift any ftmbsufo rwtrletlMM on tMs have consented ta yew th«»t» facing made «MMM» without *. • I would first of all like to thank my supervisor, Prof. Yang Zhang, for his continued support and expertise throughout my PhD studies with regards to experimentation, writing and organisation. Without his assistance this would not have been possible. In addition, I would like to extend my deepest gratitude to my second supervisor, Dr Robert Woolley for his invaluable support, my colleagues in the Combustion and Flow Diagnostic research group; Hua