Improved Friction Pressure Drop Correlation for Horizontal and Vertical Two-Phase Pipe Flow
01 Jan 1979-
About: The article was published on 1979-01-01 and is currently open access. It has received 857 citations till now. The article focuses on the topics: Pressure drop & Plug flow.
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TL;DR: In this article, a new correlation for the prediction of frictional pressure drop for two-phase flow in pipes is suggested which is simple and more convenient to use than other methods.
Abstract: A new correlation for the prediction of frictional pressure drop for two-phase flow in pipes is suggested which is simple and more convenient to use than other methods. To determine their reliabilities, this correlation and fourteen correlations from the literature were checked against a data bank containing 9300 measurements of frictional pressure drop for a variety of fluids and flow conditions. It was found that the best agreement between predicted and measured values was obtained using the correlation suggested by Bandel. Somewhat less but still reasonable accuracy of pressure drop prediction is provided by a group of identified correlations, which includes the correlation described in this paper.
867 citations
TL;DR: In this paper, a flow pattern/flow structure based heat transfer model for condensation inside horizontal, plain tubes is proposed based on simplified flow structures of the flow regimes, and also includes the effect of liquid-vapor interfacial roughness on heat transfer.
474 citations
TL;DR: In this article, a theoretically based, flow pattern dependent calculation method is adapted to yield a simple predictive method in which flow pattern influences are partially allowed for in an implicit manner and therefore need not be explicitly taken into account when using the method.
460 citations
TL;DR: In this paper, the authors investigated void fraction and two-phase frictional pressure drop in transparent circular microchannels with 1.1 and 1.45mm inner diameters and in semi-triangular (triangular with one corner smoothed) cross-sections with hydraulic diameters 1.09 and 0.49mm.
394 citations
TL;DR: In this article, a new correlation for two-phase friction pressure drop in small diameter tubes was developed by modifying the Friedel correlation, which predicts 119 data points with a mean deviation of 11.5%.
339 citations