Browsing NTNU Open by Author "Tomasch, Stefanie"
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Application and development of dissipation based combustion models for conventional and unconventional combustion processes
Tomasch, Stefanie (Doctoral theses at NTNU;2023:51, Doctoral thesis, 2023)Concepts for burner operation have manifolded under the influence of increasing performance demands for combustion processes. This is to support the global effort to reduce pollution and greenhouse gas emissions radically. ... -
Development of a turbulence dissipation based reaction rate model for progress variable in turbulent premixed flames
Tomasch, Stefanie; Swaminathan, Nedunchezhian; Spijker, Christoph; Ertesvåg, Ivar Ståle (Journal article; Peer reviewed, 2022)This study presents an algebraic combustion closure for Large eddy simulation (LES) exhibiting attributes of simplicity and simultaneous accuracy under realistic combustion conditions. The model makes use of the interlink ... -
A Numerical Study of Flow Structures and Flame Shape Transition in Swirl-Stabilized Turbulent Premixed Flames Subject to Local Extinction
Tomasch, Stefanie; Swaminathan, Nedunchezhian; Spijker, Christoph; Ertesvåg, Ivar Ståle (Peer reviewed; Journal article, 2023)Large Eddy Simulations (LES) of turbulent lean-premixed flames of V and M-shape are presented. A simple algebraic closure with the ability to capture finite-rate chemistry effects is used for subgrid reaction rate modeling. ... -
Study of MILD combustion using LES and advanced analysis tools
Zhiyi, Li; Tomasch, Stefanie; Chen, Zhi X.; Parente, Alessandro; Ertesvåg, Ivar Ståle; Swaminathan, Nedunchezhian (Peer reviewed; Journal article, 2020)A cylindrical confined combustor operating under MILD condition is investigated using LES. The combustion and its interaction with turbulence are modeled using two reactor based models, PaSR and EDC. Results show that the ...