Gas dynamics of combustion

The second far-ranging scope of work relates to the dynamics of combustion processes. Of particular interest in this context are:

- Numerical methods for the tracking of flamefronts and for the modeling of processes occuring inside a flamefront

[40] Smiljanovski, V. and Moser, V. and Klein, R. (1997) A Capturing/Tracking Hybrid Scheme for Deflagration Discontinuities. Combustion Theory and Modelling, 1 (2). 183-215 .

[41] Schmidt, H. and Klein, R. (2003) A generalized level-set/in-cell-reconstruction method for accelerating turbulent premixed flames. Combustion Theory and Modelling, 7 (2). 243-267(25).

[42] Schmidt, H. and Oevermann, M. and Münch, M. and Klein, R. (2006) Flame front capturing/tracking schemes for compressible and incompressible reactive flow. TU Delft, The Netherlands , Proceedings of the European Conference on Computational Fluid Dynamics (ECCOMAS CFD). ISBN 90-9020970-0

- Thermoacoustic resonances of burner systems

Modern low-emission stationary gas​tur​bines as they are used, e.g., in air​planes and industrial com​plexes, incline to fluctua​ting heat release and hence to a strong gene​ration of noice. If the gene​rated sound----inter​acts with reso​nant acoustic modes of the com​bustion chamber----- the so gene​rated sound with the fuel chamber in reso​nance, it can come to the reso​nance​ kata​stanza what entails huge mate​rial charges. Around this effect as for example Helmholtz-​Resonatoren, are often used in practice.

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[43] Moeck, J. and Oevermann, M. and Klein, R. and Paschereit, O. C. and Schmidt, H. (2009) A two-way coupling for modeling thermoacoustic instabilities in a flat flame Rijke tube. Proceedings of the Combustion Institute Volume, 32 (1). pp. 1199-1207.

[44] Moeck, J. and Oevermann, M. and Paschereit, O. C. and Klein, R. and Schmidt, H. (2008) Experimental and Numerical investigation of thermoacoustical instabilities in a flat flame burner. In: 32nd International Symposium on Combustion, August 3-8, 2008, Montreal, Canada. (Submitted)

- Adoption of numerical analyses in fire prevention

Only experts are generally aware of the dangers of smoke deve​loping inside of buildings in case of room fires. Even relatively small fires can produce large amounts of very toxic fire smoke. Hence, uncon​trolled smoke disper​sion in buildings very quickly leads to dange​rous situations. The majority of fire-induced casual​ties arises because of flue gas poisoning. We suffocate before we burn.

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