Analysis of Flow Evolution and Thermal Instabilities in the Near-Nozzle Region of a Free Plane Laminar Jet
المؤلفون المشاركون
Ramírez-León, Hermilo
Couder-Castañeda, Carlos
Barrios-Piña, Hector
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-01-01
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
This work focuses on the evolution of a free plane laminar jet in the near-nozzle region.
The jet is buoyant because it is driven by a continuous addition of both buoyancy and momentum at the source.
Buoyancy is given by a temperature difference between the jet and the environment.
To study the jet evolution, numerical simulations were performed for two Richardson numbers: the one corresponding to a temperature difference slightly near the validity of the Boussinesq approximation and the other one corresponding to a higher temperature difference.
For this purpose, a time dependent numerical model is used to solve the fully dimensional Navier-Stokes equations.
Density variations are given by the ideal gas law and flow properties as dynamic viscosity and thermal conductivity are considered nonconstant.
Particular attention was paid to the implementation of the boundary conditions to ensure jet stability and flow rates control.
The numerical simulations were also reproduced by using the Boussinesq approximation to find out more about its pertinence for this kind of flows.
Finally, a stability diagram is also obtained to identify the onset of the unsteady state in the near-nozzle region by varying control parameters of momentum and buoyancy.
It is found that, at the onset of the unsteady state, momentum effects decrease almost linearly when buoyancy effects increase.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Barrios-Piña, Hector& Ramírez-León, Hermilo& Couder-Castañeda, Carlos. 2015. Analysis of Flow Evolution and Thermal Instabilities in the Near-Nozzle Region of a Free Plane Laminar Jet. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1074970
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Barrios-Piña, Hector…[et al.]. Analysis of Flow Evolution and Thermal Instabilities in the Near-Nozzle Region of a Free Plane Laminar Jet. Mathematical Problems in Engineering No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1074970
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Barrios-Piña, Hector& Ramírez-León, Hermilo& Couder-Castañeda, Carlos. Analysis of Flow Evolution and Thermal Instabilities in the Near-Nozzle Region of a Free Plane Laminar Jet. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1074970
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1074970
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