CFD modeling of soot formation in flames in glass melting furnaces


At CelSian Glass & Solar B.V. (former TNO Glass Group) an MSc project is available on improved CFD modeling of soot formation in flames in glass melting furnaces.

CelSian Glass & Solar B.V. supports the global glass and solar industry with innovating and optimization their glass and solar production processes by providing contract research, technological solutions and consultancy.More information can be found on Celsian is a partner in the flexFLOX project.

Prediction of soot formation in turbulent flames is a topic of wide interest, both from fundamental and from applied point of new. In general soot consists of conglomerates of carbon rich particles originating in full rich zones of the flame. The presence of soot enhances the heat transfer from the flame but preferably no soot should be present in the flue gas leaving the combustion chamber.  Accurate prediction of formation, evolution and oxidation of soot in turbulent flow conditions is a key requirement for accurate model predictions of heat transfer and emissions in industrial furnaces.

In the case of glass furnaces an accurate model for the prediction of the amount of soot produced in large scale industrial air-gas flames and the resulting radiation intensity is of crucial importance for correctly predicting the radiative heat flux distribution of the combustion space to the glass melt. This heat flux [critically] determines the glass temperature distribution, glass flow patterns and ultimately glass quality.

During the last 3 decades, at CelSian a full CFD model (X-Stream/GTM-X) has been developed for the detailed simulation of many different kinds of glass melting furnaces, including the turbulent combustion and radiation processes in the flames of the combustion space. Different combustion models are available in GTM-X, which can include effects of soot formation and oxidation and the formation of NOx. These models have been developed in close collaboration with TU Delft.

CelSian is looking for a master student to perform a study on the modeling of soot formation. This study will focus on developing, implementing and testing improved soot formation and oxidation models in the full CFD model of CelSian. It includes performing a literature study on available models, implementing the most suitable ones in the CFD code, running the model on several test cases and evaluating the results.

The work will be performed at the office of CelSian in Eindhoven (the Netherlands). The student will be guided by a daily supervisor who will assist him/her with the work. Furthermore, the student will participate in the regular internal seminars/discussions organized by CelSian concerning all aspects of the research/work that is done for the international glass industry. Results can be presented at one of the glass-dedicated international conferences and workshops that are scheduled for 2013/2014 and/or described in a paper in an international glass-oriented magazine.

Supervisor at TU Delft is prof. dr. D.J.E.M. Roekaerts

The project is suitable as MSc project AP or SPET


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