This book contains selected papers prepared for the NATO Advanced Study
Institute on "Unsteady Combustion", which was held in Praia da Granja,
Portugal, 6-17 September 1993. Approximately 100 delegates from 14
countries attended. The Institute was the most recent in a series
beginning with "Instrumentation for Combustion and Flow in Engines",
held in Vimeiro, Portugal 1987 and followed by "Combusting Flow
Diagnostics" conducted in Montechoro, Portugal in 1990. Together, these
three Institutes have covered a wide range of experimental and
theoretical topics arising in the research and development of combustion
systems with particular emphasis on gas-turbine combustors and internal
combustion engines. The emphasis has evolved roughly from
instrumentation and experimental techniques to the mixture of
experiment, theory and computational work covered in the present volume.
As the title of this book implies, the chief aim of this Institute was
to provide a broad sampling of problems arising with time-dependent
behaviour in combustors. In fact, of course, that intention encompasses
practically all possibilities, for "steady" combustion hardly exists if
one looks sufficiently closely at the processes in a combustion chamber.
The point really is that, apart from the excellent paper by Bahr
(Chapter 10) discussing the technology of combustors for aircraft gas
turbines, little attention is directed to matters of steady performance.
The volume is divided into three parts devoted to the subjects of
combustion-induced oscillations; combustion in internal combustion
engines; and experimental techniques and modelling.