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The effects of surface instabilities on laminar film condensation
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1965], 1965)
Heat transfer rates for laminar film condensation of Freon-1l3 were measured on the underside of horizontal surfaces, inclined surfaces, and vertical surfaces. Several distinct regimes of flow were observed. On the underside ...
The prediction of low quality boiling voids
(Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1963], 1963)
Slug flow theory is used to predict the density in heated channels of various shapes. In order to make this calculation possible, measurements are made of the bubble rise velocity in annuli, tube bundles, and channels. It ...
Model of critical heat flux in subcooled flow boiling
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1968], 1968)
The physical phenomenon occurring before and at the critical heat flux (CHF) for subcooled flow boiling has been investigated. The first phase of this study established the basic nature of the flow structure at CHF. A ...
The Effect of vapor subcooling on film condensation of metals
(Cambridge, Mass. : M.I.T. Engineering Projects Laboratory, [1968], 1968)
This work presents an analysis of the interfacial "vapor-condensate" temperature distribution, which includes the effect of subcooling (supersaturation) in the vapor. Experimental data from previous investigators for ...
The effect of surface roughness and waviness upon the overall thermal contact resistance
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1966], 1966)
A thermal contact conductance equation was developed which considers both the effect of surface roughness and waviness. It was shown that the overall thermal contact conductance is determined by the roughness at large ...
Forced-convection, dispersed-flow film boiling
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1969], 1969)
This report presents the latest results of an investigation of the characteristics of dispersed flow film boiling. Heat transfer data are presented for vertical upflow of nitrogen in an electrically heated tube, 0.4 in. ...
The effect of surface conditions on nuceate pool boiling heat transfer to sodium
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1965], 1965)
A simplified theoretical model for bubble nucleation stability has been proposed, and an approximate stability criterion has been developed. This criterion contains both fluid and surfqce properties, and it predicts that ...
The effect of nonuniform axial heat flux distribution on the critical heat flux
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1965], 1965)
A systematic experimental and analytic investigation of the effect of nonuniform axial heat flux distribution on critical heat rilux was performed with water in the quality condition. Utilizing a model which ascribes the ...
A study of boiling water flow regimes at low pressures
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1966], 1966)
"A comprehensive experimental program to examine flow regimes at pressures below 100 psia for boiling of water in tubes was carried out. An electrical probe, which measures the resistance of the fluid between the centerline ...
Refrigerant forced-convection condensation inside horizontal tubes
(Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1969], 1969)
High vapor velocity condensation inside a tube was studied theoretically. The heat transfer coefficients were calculated by the momentum and heat transfer analogy. The Von Karman universal velocity distribution was applied ...