... 2020 non-condensable gas film condensation heat and mass transfer similarity transformation Natural gas becomes a potential substitution of fuel coal in line with the adjustment of national energy structure in China, and it plays an important role in the energy-saving and environment...

... = condensate film o = external sat = saturated tc = thermocouple v = vapor w = surface of tube wall References 1 Sparrow , E. W. , and Marschall , E. , 1969 , “ Binary Gravity-Flow Film Condensation ,” ASME J. Heat Tranfer , 91 , pp. 205 – 211...

... 04 03 2011 04 05 2011 04 05 2011 bubbles capillarity chaos evaporation film condensation fluid oscillations heat pipes heat transfer liquid films pipe flow pulsatile flow oscillating pulsating heat pipe simulation The pulsating (or oscillating) heat pipe...

...Wei Shao; Yuwen Zhang An advanced theoretical model of a U-shaped minichannel, a building block of a closed-end oscillating heat pipe, has been developed. Thin film evaporation in the evaporator and thin film condensation in the condenser, axial variation of surface temperature, and pressure loss...

...S. Kulkarni; A. Narain; S. Mitra Accurate steady and unsteady numerical solutions of the full 2D governing equations—which model the forced film condensation flow of saturated vapor over a semi-infinite horizontal plate (the problem of Cess and Koh)—are obtained over a range of flow parameters...

...Y. Liao This work presents a unique and unified formulation to solve the laminar film condensation two-phase boundary layer equations for the free, mixed, and forced convection regimes in the absence or presence of noncondensables. This solution explores the vast space of mixed convection across...

...Gunnar Tamm; Daisie D. Boettner; Bret P. Van Poppel; Michael J. Benson; A. Özer Arnas Analytical solutions for laminar film condensation on a vertical plate are integral to many heat transfer applications, and have therefore been presented in numerous refereed articles and in most heat transfer...

...V. Dharma Rao; V. Murali Krishna; P. K. Sarma; K. V. Sharma The problem of laminar film condensation of a vapor from vapor-gas mixture in laminar flow in a vertical parallel plate channel is formulated theoretically. The flowing gas-vapor mixture contains a noncondensable gas in high concentration...

... model to analyze the problem of a downward condensate flow along a cool inclined surface in a porous medium. Liu et al. ( 19 ) supplied a similarity solution for film condensation in a porous medium with a lateral mass flux. Char et al. ( 20 ) investigated the problem of a mixed convection condensate...

... in the present study have also been used to enhance heat transfer in the internal coolant channels for the trailing edge. blades cooling design engineering film condensation gas turbines turbulence 11 01 2006 21 03 2007 25 01 2008 2008 American Society...

... for the commonly occurring large heat sink situations, for which the condensing surface temperature (not heat flux) remains approximately the same for any given set of inlet conditions while the exit-condition changes. In this paper’s context of flows of a pure vapor that experience film condensation on the inside...

...Takahiro Murase; Adrian Briggs; Hua Sheng Wang; John W. Rose Measurements for film condensation of steam, R113 and ethylene glycol on a horizontal wire-wrapped tube are reported. All measurements were made at near atmospheric vapor pressure and with coolant at around 20 ° C . Care was taken...

...Arijit Dutta; S. K. Som; P. K. Das A theoretical study has been made to determine the heat transfer coefficient in film condensation of slowly downward flowing saturated vapor over horizontal noncircular tubes with progressively increasing radius of curvature drawn in the direction of gravity...

... management systems (looped heat pipes, etc.). The flow geometry, in normal or zero gravity, is chosen to be the inside of a channel with film condensation on one of the walls. In normal gravity, film condensation is on the bottom wall of a tilted (from vertical to horizontal) channel. It is found...

.... , 1991 , “ Free Convection Laminar Film Condensation on a Horizontal Tube With Variable Wall Temperature ,” Int. J. Heat Mass Transfer , 34 , pp. 2775 – 2778 . Fujii...

... or for falling film condensation or evaporation. Previous studies have centered mostly on falling films on plain tube arrays. The objective of the present study is to extend the investigation to tubes with enhanced surfaces: a low finned tube, an enhanced boiling tube and an enhanced condensation tube...

...Chi-Chang Wang; Cha'o-Kuang Chen Mixed-convection film condensation with downward flowing vapors onto a finite-size horizontal wavy plate is studied by a simple mathematical model and the spline alternating-direction implicit method. Effects of the wavy geometry, the interfacial vapor shear...

...Hiroshi Honda; Huasheng Wang; Shigeru Nozu A stratified flow model of film condensation in helically grooved, horizontal microfin tubes has been developed. The height of stratified condensate was estimated by extending the Taitel and Dukler model for a smooth tube to a microfin tube. For the upper...

... effects. Shea , F. L. , and Krase , N. W. , 1940 , “ Drop-Wise and Film Condensation of Steam ,” Transactions of the American Institute Chemical Engineering , 36 , pp. 463 – 487 . Slegers , L. , and Seban , R. A. , 1969 , “ Nusselt Condensation of n -Butyl Alcohol...

...M. Mosaad, Professor The present theoretical study concerns with mixed-convection laminar film condensation outside an inclined elliptical tube with isothermal surface. The assumptions used are as in the classical Nusselt-Rohsenow theory, however, with considering the interfacial vapor shear...