Analysis of the Unsteady Flow Field in a Centrifugal Compressor from Peak Efficiency to Near Stall with Full-Annulus Simulations
المؤلفون المشاركون
Binder, Nicolas
Bousquet, Yannick
Dufour, Guillaume
Trebinjac, Isabelle
Carbonneau, Xavier
المصدر
International Journal of Rotating Machinery
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-01-16
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
This study concerns a 2.5 pressure ratio centrifugal compressor stage consisting of a splittered unshrouded impeller and a vaned diffuser.
The aim of this paper is to investigate the modifications of the flow structure when the operating point moves from peak efficiency to near stall.
The investigations are based on the results of unsteady three-dimensional simulations, in a calculation domain comprising all the blade.
A detailed analysis is given in the impeller inducer and in the vaned diffuser entry region through time-averaged and unsteady flow field.
In the impeller inducer, this study demonstrates that the mass flow reduction from peak efficiency to near stall leads to intensification of the secondary flow effects.
The low momentum fluid accumulated near the shroud interacts with the main flow through a shear layer zone.
At near stall condition, the interface between the two flow structures becomes unstable leading to vortices development.
In the diffuser entry region, by reducing the mass flow, the high incidence angle from the impeller exit induces a separation on the diffuser vane suction side.
At near stall operating point, vorticity from the separation is shed into vortex cores which are periodically formed and convected downstream along the suction side.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Bousquet, Yannick& Carbonneau, Xavier& Dufour, Guillaume& Binder, Nicolas& Trebinjac, Isabelle. 2014. Analysis of the Unsteady Flow Field in a Centrifugal Compressor from Peak Efficiency to Near Stall with Full-Annulus Simulations. International Journal of Rotating Machinery،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-494042
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Bousquet, Yannick…[et al.]. Analysis of the Unsteady Flow Field in a Centrifugal Compressor from Peak Efficiency to Near Stall with Full-Annulus Simulations. International Journal of Rotating Machinery No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-494042
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Bousquet, Yannick& Carbonneau, Xavier& Dufour, Guillaume& Binder, Nicolas& Trebinjac, Isabelle. Analysis of the Unsteady Flow Field in a Centrifugal Compressor from Peak Efficiency to Near Stall with Full-Annulus Simulations. International Journal of Rotating Machinery. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-494042
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-494042
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