Now showing items 21-40 of 80

    • The prediction of low quality boiling voids 

      Griffith, P. (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 ...
    • Mechanism of dropwise condensation 

      Umur, Aydin; Griffith, P. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1963], 1963)
      From a study of surface phenomena, information is obtained about conditions under which net condensation can occur. An experimental examination of the surface, using an optical method capable of detecting thin films of ...
    • Film boiling on the inside of vertical tubes with upward flow of the fluid at low qualities 

      Dougall, R. S.; Rohsenow, Warren M. (Cambridge, Mass. : Dept. of Mechanical Engineering, Massachusetts Institute of Technology, [1963], 1963)
      Flow regimes, local heat transfer coefficients, and temperature distributions along the wall have been studied for film boiling inside a vertical tube with upward flow of a saturated liquid. The area of interest has been ...
    • The mechanism of void formation in initially subcooled systems 

      Griffith, P.; Snyder, George A. (Cambridge, Mass., M.I.T. Dept. of Mechanical Engineering, [1963], 1963)
      When an initially subcooled, water filled system undergoes a transient in heat flux or pressure such that bubbles form, the most important variable which determines the volume of the resulting void is the number of bubbles ...
    • The mechanism of void formation in initially subcooled systems 

      Griffith, P.; Snyder, George A. (Cambridge, Mass., M.I.T. Dept. of Mechanical Engineering, [1963], 1963)
      When an initially subcooled, water filled system undergoes a transient in heat flux or pressure such that bubbles form, the most important variable which determines the volume of the resulting void is the number of bubbles ...
    • Some hydrodynamic characteristics of bubbly mixtures flowing vertically upward in tubes 

      Rose, Sewell C.; Griffith, P. (Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1964], 1964)
      An investigation of bubbly flow has been conducted in vertical plexiglass tubes using air and water at atmospheric pressure. The bubbly flow pattern is an entrance condition or a non-fully developed flow. A spontaneous ...
    • Pressure drop with surface boiling in small-diameter tubes 

      Dr̲mer, Thomas; Bergles A. E. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1964, 1964)
      Pressure drop for water flowing in small-diameter tubes under isothermal, nonboiling, and surface-boiling conditions was investigated. Experimental results for local pressure gradient and heattransfer coefficients are ...
    • Heat transfer during film condensation of a liquid metal vapor 

      Sukhatme, S. P.; Rohsenow, Warren M. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1964], 1964)
      The object of this investigation is to resolve the discrepancy between theory and experiment for the case of heat transfer durirnfilm condensation of liquid metal vapors. Experiments by previous investigators have yielded ...
    • Film boiling of saturated liquid flowing upward through a heated tube : high vapor quality range 

      Laverty, W. F.; Rohsenow, Warren M. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1964], 1964)
      Film boiling of saturated liquid flowing upward through a uniformly heated tube has been studied for the case in which pure saturated liquid enters the tube and nearly saturated vapor is discharged. Since a previous study ...
    • The bubbly-slug transition in a high velocity two phase flow 

      Griffith, P.; Snyder, George A. (Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1964], 1964)
      A possible mechanism for the transition between bubbly and slug flow is proposed and tested in a simulated slug flow system. No sudden collapse of slug flow with increasing velocity is found and it is concluded that: a. ...
    • The transition from the annular to the slug flow regime in two-phase flow 

      Haberstroh, Robert D.; Griffith, P. (Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1964], 1964)
      Experiments were conducted to determine the transition from annular to semiannular flow regimes for two-phase, gas-liquid upflow in vertical tubes. The influencesof liquid flow rate, tube diameter, liquid viscosity, surface ...
    • The Momentum flux in two-phase flow 

      Andeen, Gerry B.; Griffith, P. (Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1965], 1965)
      The average momentum flux at a section of a pipe with twophase upflow has been measured by the impulse technique. Steamwater and air-water mixtures were tested in one-inch and onehalf inch nominal pipes. Homogeneous ...
    • Survey and evaluation of techniques to augment convective heat transfer 

      Bergles A. E.; Morton, Harmon Lindsay. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1965], 1965)
      This report presents a survey and evaluation of the numerous techniques which have been shown to augment convective heat transfer. These techniques are: surface promoters, including roughness and treatment; displaced ...
    • The effect of nonuniform axial heat flux distribution on the critical heat flux 

      Todreas, Neil E.; Rohsenow, Warren M. (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 ...
    • The effects of surface instabilities on laminar film condensation 

      Gerstmann, Joseph; Griffith, P. (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 ...
    • Thermal contact conductance in a vacuum 

      Yovanovich, M. Michael (Cambridge, Mass. : M.I.T. Engineering Projects Laboratory, [1965], 1965)
      The object of this work is to develop analytically equations by which one could predict the thermal contact conductance between contiguous surfaces operating in a vacuum environment. In this work the solution to the problem ...
    • The effect of surface conditions on nuceate pool boiling heat transfer to sodium 

      Marto, P. J.; Rohsenow, Warren M. (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 ...
    • A study of system-induced instabilities in forced-convection flows with subcooled boiling 

      Maulbetsch, John S.; Griffith, P. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1965], 1965)
      A combined analytical and experimental program was carried out to investigate the problem of hydrodynamic stability of forcedconvection flows with boiling. The study was restricted to the flow of water in small channels ...
    • The effect of surface roughness and waviness upon the overall thermal contact resistance 

      Mikic, B. B.; Yovanovich, M. Michael; Rohsenow, Warren M. (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 ...
    • Thermal non-equilibrium in dispersed flow film boiling in a vertical tube 

      Forslund, Robert Paul; Rohsenow, Warren M. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1966], 1966)
      The departure from thermal equilibrium between a dispersed liquid phase and its vapor at high quality during film boiling is investigated, The departure from equilibruim is manifested by the high resistance to heat transfer ...