Showing papers in "International Journal of Heat and Mass Transfer in 1966"

TL;DR: In this paper, the authors show that the quantity of heat transmitted from a metal surface to boiling water increases as the temperature difference ΔT is increased, but after the ΔT has reached a certain limit, quantity Q decreases with further increase in ΔT.

TL;DR: In this article, a wide-ranging analytical investigation of laminar film condensation is presented, which includes interfacial resistance, superheating, free convection due to both temperature and concentration gradients, mass diffusion and thermal diffusion, and variable properties in both the liquid and the gas-vapor regions.

TL;DR: In this article, an analytical model of the Leidenfrost phenomenon is postulated, and the instantaneous evaporation rate is found by satisfying the heat, mass, and momentum balances for this model.

TL;DR: In this paper, Laminar film condensation of a vapour flow along a flat plate and on the external surface of a cylinder in a transverse flow is studied, and momentum transfer plays a dominant part in fluid dynamics of the process itself.

TL;DR: The experimental results of the quantities of separated liquid deposited on the wall of a rectangular channel from the turbulent air-water dispersed-annular flow are presented in this article, where the expression for the calculation of the liquid flow rate moving a film is proposed.

TL;DR: In this article, the dimensionless boundary-layer equations describing free convection of a radiation absorbing-emitting fluid are treated as a singular perturbation problem, where the parameter characterizing the relative importance of conduction versus radiation heat transfer within the fluid is small.

TL;DR: In this paper, a comparison of the experimental data with existing theory for Jakob numbers ranging from 24 through 792 indicates that the shape of the bubble growth curve over the entire range investigated is best described by the t 1 2 variation predicted by the uniform superheat model.

TL;DR: In this paper, a phenomenological theory of irreversible processes is used to describe heat conduction with a finite velocity of heat propagation, relaxation of stresses in visco-elastic bodies, moisture transfer in capillary-porous bodies as well as turbulent transfer processes.

TL;DR: In this paper, the analysis of Hartley and Murgatroyd, applicable to isothermal films, is extended to include the effects of vapor thrust and of thermocapillarity.

TL;DR: In this paper, a relaxation phenomenon concerning the superheating of the equivalent conduction layer at the heating surface due to the rapid growth of succeeding vapour bubbles on active nuclei is described.

TL;DR: In this article, an experimental investigation is described concerning natural convection of air enclosed between two isothermal concentric spheres of various diameter ratios ranging from 1.19 to 3.14.

TL;DR: In this paper, the effect of buoyancy on forced convective heat transfer in a horizontal straight tube has been investigated by means of accurate experiments on the fully developed flow of air in a uniformly heated horizontal tube.

TL;DR: In this paper, when the temperature difference between two horizontal flat plates is increased above a critical value, vortex rolls with their axes parallel to the flow direction are observed to appear between the flat plates.

TL;DR: In this paper, heat flux dependence and directional effect of thermal contact resistance for interface between dissimilar metals are investigated. But the authors focus on the interface between two dissimilar metal types.

TL;DR: In this paper, a simple correlation on the basis of a non-dimensional roughness parameter e+ was found to be useful, but a more exact correlation on a two-layer model of the heat-transfer resistance was more exact.

TL;DR: In this article, the boundary-layer equations were transformed into a system of ordinary differential equations by the similarity relations, and the heat-transfer characteristics were found to be correlated by six parameters.

TL;DR: In this paper, isothermal pressure drop and heat transfer to non-Newtonian fluids in different coiled pipes (helical and spiral coils) at constant tube wall temperature conditions are presented.

TL;DR: In this article, a determination of the local coefficients of mass transfer in impingement flow of air issuing from slotted nozzles was made using the technique of sublimation from experimental naphthalene plates.

TL;DR: In this paper, the authors made observations of the flow over sets of artificial roughness consisting of square slots normal to the direction of flow and found that when the slot exceeded the thickness of the laminar sublayer by a factor of about 20, a more or less steady vortex pattern would form in the slots.

TL;DR: In this paper, the effective thermal conductivity of a number of spherical metal powder-gas systems has been measured using a transient line source method, and an expression for randomly stacked spherical powders was developed using the orthorhombic stacking arrangement and assuming linear heat flow.

TL;DR: In this article, experimental results were presented for forced convective heat transfer from a flat plate in carbon dioxide near the thermodynamic critical point, where state conditions were varied throughout the critical region, but most tests were conducted in the single phase (supercritical) state.

TL;DR: In this paper, the authors studied the first wet observations of bubble material and showed that the bubble rate was dependent on the temperature of the water surface of the bubble material, and the data were obtained from the boiling of a pool of fluids with different physical properties.

TL;DR: In this article, a solution of the problem of laminar film condensation with both a gravitational type body force and a moving vapor cocurrent and parallel to the surface is presented, assuming that the inertia terms of the liquid film have negligible effect and that the temperature distribution across the film is linear.

TL;DR: In this paper, the minimum heat flux in pool boiling of water on horizontal wires at pressures from 1 to 100 atm were measured, and it was shown that cooling of the ends of a sample by current supplies leads to the overestimated values of q min within the range of the heat fluxes from q min to q max there exists an equilibrium heat flux, for which nucleate and film boiling regimes are equally stable.

TL;DR: In this article, experimentally determined velocity and temperature distributions for free-convection flow above a horizontal wire in air, with constant heat flux, are presented for freeconvective flow over a wire.

TL;DR: In this article, an experimental investigation was made of the temperature distribution and fluid flow in a horizontal layer of liquid heated from below, covering a range of Rayleigh numbers from 1.16 × 103 to 2.03 × 106.

TL;DR: In this article, the transfer of radiant energy in an atmosphere having spherical symmetry is discussed, and the transfer between two concentric spheres (having black surfaces) kept at different uniform temperatures and separated by an absorbing and emitting gas with a constant absorption coefficient is studied.

TL;DR: In this paper, the authors derived solutions of the void propagation equation for the following operating conditions: (1) constant power and inlet flow, (2) oscillatory power input, (3), oscillatory inlet flows, (4) oscillated power and oscillatory flow, and (5) compressibilities of the vapor and liquid.