کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8066838 | 1521076 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flow pattern effect on two-phase pressure drops in vertical upward flow across a horizontal tube bundle
ترجمه فارسی عنوان
اثر الگوی جریان بر روی فشار دو فاز در جریان یکپارچه ی عمودی در یک بسته نرم افزاری لوله افقی قرار می گیرد
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کلمات کلیدی
الگوهای جریان، ضریب اصطکاک دو فاز، بسته های لوله افقی، عبور جریان همبستگیهای جدید،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Shell-side two-phase pressure drops under cross-flow condition play an important role in the operation of heat exchangers. However, no well-verified general correlation for predicting two-phase friction multipliers in horizontal tube bundles is available in the open literatures. In the present paper, based on a combination of Kanizawa and Ribastki flow regime criteria with the modified Mao and Hibiki flow regime criteria, the flow patterns of two-phase vertically upward flow across horizontal tube bundles in the open literatures were identified. The results show that flow patterns have a significant effect on two-phase friction multipliers. For the bubbly flow, finely dispersed bubbly flow, and annular flow, the mass velocity effect on two-phase friction multipliers can be neglected. However, the two-phase friction multipliers of cap bubbly flow and churn flow decrease with an increasing mass velocity. Then, a general dimensionless correlation in terms of the Martinelli parameter and the two-phase Froude number were developed, which is able to accurately predicting gas-liquid two-phase flow resistances of churn flow in staggered horizontal tube bundle under cross-flow condition. New correlations for predicting two-phase friction multipliers of bubbly flow, finely dispersed bubbly flow and annular flow both in staggered and in-line horizontal tube bundles were also developed and can give excellent representations for the existing data in the open literatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 120, October 2018, Pages 253-264
Journal: Annals of Nuclear Energy - Volume 120, October 2018, Pages 253-264
نویسندگان
K. Zhang, Y.D. Hou, W.X. Tian, Y.P. Zhang, G.H. Su, S.Z. Qiu,