Simulation of the Film Flow on a Horizontal Tube Feeded by Falling Droplets

Author(s):  
R. H. Wassenaar
Keyword(s):  
1987 ◽  
Vol 109 (4) ◽  
pp. 983-990 ◽  
Author(s):  
M.-C. Chyu ◽  
A. E. Bergles

Heat transfer for saturated falling-film evaporation on a horizontal smooth tube has been studied through analysis and experimentation to investigate the effects of film flow rate, liquid feed height, and wall superheat. Two models have been proposed, both based upon three defined heat transfer regions: the jet impingement region, the thermal developing region, and the fully developed region. The model that uses an experimental correlation for heat transfer in the fully developed region compares favorably with experimental data and other predictions reported for the case where the liquid feed is in a sheet.


2014 ◽  
Vol 54 (11) ◽  
pp. 2939-2950 ◽  
Author(s):  
Lincong Luo ◽  
Guanmin Zhang ◽  
Jihong Pan ◽  
Maocheng Tian

2005 ◽  
Vol 21 (4) ◽  
pp. 235-242 ◽  
Author(s):  
Yan-Ting Lin ◽  
Sheng-An Yang

AbstractA simple model has been developed for the study of turbulent film condensation from downward flowing vapors onto a horizontal circular tube with variable wall temperature. The interfacial shear at the vapor condensate film is evaluated with the help of Colburn analogy. The condensate film flow and local/or mean heat transfer characteristics from a horizontal tube with non-uniform temperature variation under the effect of Froude number, sub-cooling parameter and system pressure parameter has been conducted. Although the non-uniform wall temperature variation has an appreciable influence on the local film flow and heat transfer; however, the dependence of mean heat transfer on the non-uniform wall temperature variation is almost negligible.


2017 ◽  
Vol 142 ◽  
pp. 3888-3894 ◽  
Author(s):  
Hui Han ◽  
Chongzheng Sun ◽  
Yu Wang ◽  
Yuxing Li

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