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Category:
Scientific Computing

Lecturer:
Prof. Dr. Hernán Olguín, Departamento de Ingeniería Mecánica, Universidad Técnica Federico Santa María, Valparaíso, Spain

Place:
Mathematikon, Room 10, Im Neuenheimer Feld 205

Host:
Interdisciplinary Center for Scientific Computing IWR

Description:
The task of formally extending the gas flamelet theory to spray flames has been only partially fulfilled and, whereas several spray flamelet models have been derived during the last decades, only few works regarding the spray flamelet equations (SFE) are available in the literature. Therefore, a degree of maturity similar to the one already achieved for gas flames has not yet been reached for spray flames. Among the remaining open issues is the closure of the SFE in mixture fraction space, which includes developing models for the Scalar Dissipation Rate (SDR) and for the different evaporation related sources appearing due to the consideration of a liquid phase. In this presentation, recent advances in the closure of the SDR are described, which include a reformulation of the spray flamelet equations in terms of the gradient of mixture fraction instead of the SDR itself and the derivation of a transport equation for this new variable. The results are expected to help advancing towards the development of a self-contained spray flamelet theory.

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