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Detailed mathematical modelling of transient combustion processes

Koksharov, Andrey

In many cases ignition has a pivotal influence on the flame front development. The multitude of participating hydrodynamical and thermo-chemical processes cover a very large range of time and space scales. These range from several micrometers to the integral scales of several meters. Thus, it makes the accurate modelling of these parameters particularly important. The proposed numerical Adaptive Pseudo Spectral Method can accurately describe the whole range of time and space scales with only limited discretisation parameters.
The main application is focused on ignition and on flame propagation in narrow channels, which is accompanied by versatile effects, which are very sensible to system parameters. Additionally, the method is applied to ignition and flame acceleration in unconfined settings. This example proved an extreme scale difference of underlying process, with strong coupling be- tween underlying processes.

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DOI: 10.5445/IR/1000091931
Veröffentlicht am 12.03.2019
Zugehörige Institution(en) am KIT Institut für Technische Thermodynamik (ITT)
Publikationstyp Hochschulschrift
Jahr 2019
Sprache Englisch
Identifikator urn:nbn:de:swb:90-919314
KITopen-ID: 1000091931
Verlag KIT, Karlsruhe
Umfang 200 S.
Abschlussart Dissertation
Fakultät Fakultät für Maschinenbau (MACH)
Institut Institut für Technische Thermodynamik (ITT)
Prüfungsdatum 31.01.2019
Referent/Betreuer Prof. U. Maas
Schlagworte Verbrennung, Numerische Simulation, Spektrale Methode, Adaption, Chemische Mastergleichung, Tulip-Flame, Microflow Reactor
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