التفاصيل البيبلوغرافية
| العنوان: |
Prediction of interfacial shear stress of vertical upward adiabatic annular flow in pipes. |
| المؤلفون: |
Ju, Peng1 jupeng@cgnpc.com.cn, Liu, Yang1, Brooks, Caleb S.1, Ishii, Mamoru1 |
| المصدر: |
International Journal of Heat & Mass Transfer. Apr2019, Vol. 133, p500-509. 10p. |
| مصطلحات موضوعية: |
*FLUID models in geophysics, *SHEARING force, *ADIABATIC flow, *PIPE, *STATISTICAL correlation |
| مستخلص: |
Highlights • A new correlation for interfacial friction factor of vertical upward adiabatic annular flow in pipes has been proposed. • The new correlation is based on a group of non-dimensional numbers including We f , We g ″ and N μ f , which are easy to obtain. • From data comparison, the new correlation has a mean absolute percentage error of 15% for all data listed in four databases. Abstract Interfacial shear stress in annular two-phase flow is essential both for detailed modeling of two-fluid model and calculation of pressure gradient. Most of existing correlations on interfacial friction factor are based on Wallis's (1969) correlation, which considers the interfacial friction factor as a function of film thickness. As film thickness is a parameter not easy to obtain, it needs either high accuracy instrument to measure from experiment or to be calculated from available correlations. The calculated film thickness from available correlations introduces additional uncertainties to interfacial friction factor. Because of this, a new correlation of interfacial friction factor based on a group of non-dimensional numbers which are easy to obtain has been proposed. From data comparison, the new correlation has a mean absolute percentage error of 15% for all data listed in four databases. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |