On the applicability of progress variable approach for large eddy simulation of premixed flames

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Makina Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2017

Öğrenci: BULUT TEKGÜL

Eş Danışman: MEHMET HALUK AKSEL, ÖZGÜR UĞRAŞ BARAN

Özet:

Combustion applications are the primary energy source and will continue to be for the near future. Therefore, accurate modeling of combustion applications is crucial to study and improve the processes. In this study, progress variable approach is used with the implementation of a source term found in literature to simulate selected fully premixed combustion applications. CFD computations and preprocessing steps were conducted using OpenFOAM C++ library. Thermophysical values were obtained from zero and one dimensional Cantera simulations and given as initial conditions. Obtaining flame front positions consistent with the experimental results by modeling the flame as a single scalar transport was intended. k-ε RANS and one-equation eddy LES turbulence models were used. Results showed that selected source term can be used independent from the application geometry or used two turbulence models. Good flame front position correlations with experimental profiles were achieved.