Analysis of fatigue failure of Francis turbine runner at Derbendikhan hydropower station
المؤلف
المصدر
Sulaimani Journal of Engineering Sciences
العدد
المجلد 4، العدد 4 (30 يونيو/حزيران 2017)، ص ص. 7-13، 7ص.
الناشر
تاريخ النشر
2017-06-30
دولة النشر
العراق
عدد الصفحات
7
التخصصات الرئيسية
الملخص EN
Fatigue failures in Francis turbine runner are frequently occurred in hydropower plants, causing unexpected plant downtime and considerable financial loss.
Decades of operational experience have shown that turbine runners develop fatigue cracks in areas, where stress concentrations and material defects coincide.
In Francis turbine runners, cracks tend to propagate from the transition of the welded Tjoint between the blade and the band or crown.
This type of turbine runner, which operate under a wide range of heads and outputs, are subjected to considerable dynamic forces which can lead to fatigue cracking.
The magnitude of these forces is a function of the hydraulic pressure, the water velocity and the geometry of the stationary parts guiding the water into the runner.
This paper presents the water pressure and bending stresses for different operational conditions in a Francis runner of a Derbendikhan hydropower station.
At the first step, the dynamic fluid calculation is used to determine the fluctuating water pressure on the blade of the runner.
At the second step, for a period of operational nominal bending stress due to the fluctuating water pressure are determined.
The result indicates that the hydropower plant was operated with the high fluctuating water pressure which is responsible for inducing bending stress response.
The high bending stress on the blade is a probable reason for fatigue failure.
Furthermore, the paper discusses the fatigue analysis of the runner.
Typical results are presented and discussed.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Said, Rida Abd Allah. 2017. Analysis of fatigue failure of Francis turbine runner at Derbendikhan hydropower station. Sulaimani Journal of Engineering Sciences،Vol. 4, no. 4, pp.7-13.
https://search.emarefa.net/detail/BIM-940890
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Said, Rida Abd Allah. Analysis of fatigue failure of Francis turbine runner at Derbendikhan hydropower station. Sulaimani Journal of Engineering Sciences Vol. 4, no. 4 (2017), pp.7-13.
https://search.emarefa.net/detail/BIM-940890
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Said, Rida Abd Allah. Analysis of fatigue failure of Francis turbine runner at Derbendikhan hydropower station. Sulaimani Journal of Engineering Sciences. 2017. Vol. 4, no. 4, pp.7-13.
https://search.emarefa.net/detail/BIM-940890
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
رقم السجل
BIM-940890
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