Investigation on Flow-Induced Noise due to Backflow in Low Specific Speed Centrifugal Pumps
المؤلفون المشاركون
Liang, Yun
Yuan, Jianping
Yuan, Shouqi
Si, Qiaorui
المصدر
Advances in Mechanical Engineering
العدد
المجلد 2013، العدد 2013 (31 ديسمبر/كانون الأول 2013)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2013-09-24
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
Flow-induced noise causes disturbances during the operation of centrifugal pumps and also affects their performance.
The pumps often work at off-design conditions, mainly at part-load conditions, because of frequent changes in the pump device system.
Consequently numerous unstable phenomena occur.
In low specific speed centrifugal pumps the main disturbance is the inlet backflow, which is considered as one of the most important factors of flow-induced noise and vibration.
In this study, a test rig of the flow-induced noise and vibration of the centrifugal pump was built to collect signals under various operating conditions.
The three-dimensional unsteady flow of centrifugal pumps was calculated based on the Reynolds-averaged equations that resemble the shear stress transport (SST) k-ω turbulence model.
The results show that the blade passing frequency and shaft frequency are dominant in the spectrum of flow-induced noise, whereas the shaft component, amplitude value at shaft frequency, and peak frequencies around the shaft increase with decreasing flow.
Through flow field analysis, the inlet backflow of the impeller occurs under 0.7 times the design flow.
The pressure pulsation spectrum with backflow conditions validates the flow-induced noise findings.
The velocity characteristics of the backflow zone at the inlet pipe were analyzed, and the dynamic characteristics of the backflow eddy during one impeller rotating period were simultaneously obtained by employing the backflow conditions.
A flow visualization experiment was performed to confirm the numerical calculations.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Si, Qiaorui& Yuan, Shouqi& Yuan, Jianping& Liang, Yun. 2013. Investigation on Flow-Induced Noise due to Backflow in Low Specific Speed Centrifugal Pumps. Advances in Mechanical Engineering،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-447119
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Si, Qiaorui…[et al.]. Investigation on Flow-Induced Noise due to Backflow in Low Specific Speed Centrifugal Pumps. Advances in Mechanical Engineering No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-447119
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Si, Qiaorui& Yuan, Shouqi& Yuan, Jianping& Liang, Yun. Investigation on Flow-Induced Noise due to Backflow in Low Specific Speed Centrifugal Pumps. Advances in Mechanical Engineering. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-447119
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-447119
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