The Effect of Reynolds Number on Jet in Asymmetric Co-Flows: A CFD Study
المؤلفون المشاركون
Lundström, T. Staffan
Teng, Ziyan
Larsson, I. A. Sofia
Marjavaara, B. Daniel
المصدر
International Journal of Chemical Engineering
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-10-24
دولة النشر
مصر
عدد الصفحات
11
الملخص EN
In rotary kilns in grate-kiln systems for iron ore pelletizing, a long and stable jet flame is needed to ensure a high quality of the pellets.
The primary jet issuing from the nozzle interacts with two asymmetric co-flows creating a very complex flow.
In order to better understand and eventually model this flow with quality and trust, simplified cases need to be studied.
In this work, a simplified and virtual model is built based on a down-scaled kiln model established in a previous experimental work.
The aim is to numerically study the jet development as a function of position and Reynolds number (Re).
The numerical simulations are carried out with the standard k-ε model, and quite accurate velocity profiles are obtained while the centerline decays and spreading of the passive scalars are over predicted.
The model is capable of predicting a Re dependency of the jet development.
With increasing Re, the jet is longer while it generally decays and spreads faster resulting from the stronger shear between the jet and co-flows and the stronger entrainment from the recirculation zone.
This recirculation found in the simulations restrain the momentum spreading in the spanwise direction, leading to a slower velocity spreading with higher Re.
For further validation and understanding, more measurements in the shear layer and simulations with more advanced turbulence models are necessary.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Teng, Ziyan& Larsson, I. A. Sofia& Lundström, T. Staffan& Marjavaara, B. Daniel. 2018. The Effect of Reynolds Number on Jet in Asymmetric Co-Flows: A CFD Study. International Journal of Chemical Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1170057
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Teng, Ziyan…[et al.]. The Effect of Reynolds Number on Jet in Asymmetric Co-Flows: A CFD Study. International Journal of Chemical Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1170057
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Teng, Ziyan& Larsson, I. A. Sofia& Lundström, T. Staffan& Marjavaara, B. Daniel. The Effect of Reynolds Number on Jet in Asymmetric Co-Flows: A CFD Study. International Journal of Chemical Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1170057
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1170057
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر