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Modelling of the Tangential Strain Rate Term in the Flame Surface Density Transport Equation in the Context of Reynolds Averaged Navier Stokes Simulations : A Direct Numerical Simulation Analysis
المؤلفون المشاركون
Katragadda, Mohit
Chakraborty, Nilanjan
Malkeson, Sean P.
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-03-02
دولة النشر
مصر
عدد الصفحات
15
التخصصات الرئيسية
الملخص EN
A direct numerical simulation (DNS) database of freely propagating statistically planar turbulent premixed flames with a range of different values of Karlovitz number Ka, turbulent Reynolds number Ret, heat release parameter τ, and global Lewis number Le has been used to assess the models of the tangential strain rate term in the generalised flame surface density (FSD) transport equation in the context of Reynolds averaged Navier Stokes (RANS) simulations.
The tangential strain rate term has been split into contributions arising due to dilatation rate TD and flame normal strain rate (-TN).
Subsequently, TD and (-TN) were split into their resolved (i.e., TD1 and (-TN1)) and unresolved (TD2 and (-TN2)) components.
Detailed physical explanations have been provided for the observed behaviours of the components of the tangential strain rate term.
This analysis gave way to the modelling of the unresolved dilatation rate and flame normal strain rate contributions.
Models have been identified for TD2 and (-TN2) for RANS simulations, which are shown to perform satisfactorily in all cases considered, accounting for the variations in Ka, Ret, τ and Le.
The performance of the newly proposed models for the FSD strain rate term have been found to be either comparable to or better than the existing models.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Katragadda, Mohit& Malkeson, Sean P.& Chakraborty, Nilanjan. 2014. Modelling of the Tangential Strain Rate Term in the Flame Surface Density Transport Equation in the Context of Reynolds Averaged Navier Stokes Simulations : A Direct Numerical Simulation Analysis. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-508781
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Katragadda, Mohit…[et al.]. Modelling of the Tangential Strain Rate Term in the Flame Surface Density Transport Equation in the Context of Reynolds Averaged Navier Stokes Simulations : A Direct Numerical Simulation Analysis. Mathematical Problems in Engineering No. 2014 (2014), pp.1-15.
https://search.emarefa.net/detail/BIM-508781
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Katragadda, Mohit& Malkeson, Sean P.& Chakraborty, Nilanjan. Modelling of the Tangential Strain Rate Term in the Flame Surface Density Transport Equation in the Context of Reynolds Averaged Navier Stokes Simulations : A Direct Numerical Simulation Analysis. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-508781
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-508781
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