The prospects presented by wavelets in the numerical analysis of chemically reacting turbulent flows are examined. In many flows of industrial relevance, combustion takes place in a stream of turbulent premixed gases. The mode of combustion is said to lie in the laminar flamelet regime. When a combustion process belonging to this regime occurs, it is anticipated that the flow field will be split into two components: reactants, consisting essentially of the fuel-air mixture, and products, typically consisting of carbon dioxide, water vapour, nitrogen and a number of other trace species. The two regions are separated by the flame, which is typically a very small scale structure containing all of the chemical and molecular transport effects. The length scale disparity between the thin flame and the flow domain as a whole makes efficient discretization with traditional methods difficult, but is ideally suited to the multiresolution paradigm. In this paper, the current state of the art in the application of wavelets to the discretization of turbulent combustion problems is explored. The limitations of the present approaches as well as their strengths are assessed and outstanding problems from both a theoretical and a practical point of view are discussed. Key research directions for future investigations are highlighted.
|Number of pages||8|
|Journal||Proceedings of the Institution of Mechanical Engineers - Part C: Journal of Mechanical Engineering Science|
|Publication status||Published - 2000|