Showing papers in "International Journal of Heat and Mass Transfer in 1971"

TL;DR: In this article, heat transfer and friction correlations are developed for turbulent flow in tubes having a repeated-rib roughness, based on application of a heatmomentum transfer analogy to flow over a rough surface, which was first used by Dipprey and Sabersky for sand-grain roughness.

TL;DR: In this article, a set of Boussinesq approximations were shown to have solutions of similarity form for combined buoyancy effects, for vertical flows adjacent to surfaces and in plumes, and the resulting equations were integrated for air and water for various practical values of the Schmidt number.

TL;DR: In this paper, the authors studied the behavior of the flow field induced by lateral heating in a stably stratified fluid of constant gradient and found that the critical Rayleigh number above which cellular convection occurs has been experimentally determined to be 15000 ± 2500.

TL;DR: In this paper, the flow field generated by two coaxial jets was investigated experimentally with hot-wire anemometers and the area ratio between the external and internal nozzle was varied as well as the velocity issuing from each of the nozzles.

TL;DR: In this paper, the authors presented solution methods of convective heat transfer problems which take into account heat propagation in the solid in contact with a moving fluid, referred to as the solution of conjugated problems.

TL;DR: In this article, the stability of a thin liquid film flowing down an inclined wall is extended to take into account the effects of evaporation or condensation, and it is shown that the flow is unstable at every Reynolds number under heating, but exhibits critical Reynolds numbers under cooling.

TL;DR: In this article, an analytical and experimental results for a fully developed laminar flow in a curved channel with a square cross section are obtained under the condition of a constant wall heat flux.

TL;DR: In this paper, a finite-difference solution using a combination of line iterative method and boundary vorticity method is presented for the hydrodynamically and thermally fully developed laminar forced convection in curved pipes subjected to the thermal boundary conditions of axially uniform wall heat flux and peripherally uniform wall temperature at any axial position.

TL;DR: In this paper, an investigation of the hydrodynamic stability of a laminar plume arising from a horizontal line source of heat was carried out using the Tollmien-Schlichting theory of small disturbances.

TL;DR: In this article, developed velocity profiles for flows with mass addition or withdrawal through the boundary are reported for both circular tube and two-dimensional rectangular duct geometries, and the development of the temperature field, in a region of fully developed velocity, is analyzed for both ducts and for constant temperature and constant heat flux boundary conditions.

TL;DR: In this paper, a straight circular pipe rotating around an axis perpendicular to its own axis, there occurs a secondary flow caused by Coriolis force, by which the flow resistance and the heat-transfer rate are increased.

TL;DR: In this article, the linearized behavior of a fluid layer subjected to a step change in surface temperature is examined using two different conceptual approaches: the first approach uses initial value techniques while the second employs two common versions of the frozen-time hypothesis.

TL;DR: In this paper, the authors calculated the temperature profiles and heat flux distributions in an end-fired right cylindrical furnace with circumferential sink surfaces using the Monte Carlo Method for various flow patterns.

TL;DR: In this paper, a finite difference solution for a scalar boundary layer under the influence of a harmonic oscillation in the velocity field is proposed, where the principal assumptions used in the calculations are that the fluctuating scalar field is described by a linearized form of the conservation equation and that the velocity varies linearly with distance from the wall.

TL;DR: In this paper, a mathematical treatment of the effect of thermal distortion on the thermal contact resistance between two semi-infinite solids of different materials is given, and it is shown that problems of this type sometimes have no steady state solution and this is attributed to the discontinuous nature of the boundary condition for thermal contact.

TL;DR: In this paper, the authors determined the solutions of the energy equation which satisfy certain fundamental boundary conditions, and these fundamental solutions can be superposed to satisfy a wide variety of boundary conditions.

TL;DR: In this paper, the effects of free convection on laminar flow of water in horizontal circular tubes having essentially constant heat flux at the tube wall were investigated and a visual and quantitative study was performed utilizing electrically heated glass tubing.

TL;DR: In this paper, an analytical cum computational technique is proposed using Green's functions for solving melting or solidification problems, which may be very attractive for tackling problems involving nonlinear boundary conditions, or multi-component systems.

TL;DR: In this article, boundary-layer solutions are given for free convection in laminar three-dimensional systems driven by a temperature-dependent or composition-dependent density, and the results of Acrivos [1] for power-law fluids are generalized.

TL;DR: In this article, the authors used the mean value distributions of υz and υθ to predict the axial and swirl velocities in a non-recirculating swirling flow.

TL;DR: A comprehensive set of finite-difference solutions describing the heat or mass transfer-controlled dissolution of isolated spheres is presented in this paper, based on a generalized formulation which includes three specific classes of dissolution problems.

TL;DR: In this paper, the authors show that surface roughness has a particular effect on forced convection heat transfer to supercritical fluid and that the wall temperature profiles obtained in the experiments and also in those of previous investigators can be explained fairly well by the theory assuming normal mode turbulent convection.

TL;DR: In this paper, the incompressible thermal boundary layer equations for a vertical tube open at both ends and heated at the wall were solved by a finite difference method for conditions of constant wall temperature and constant wall heat flux.

TL;DR: In this paper, a theoretical analysis of vapor bubble growth in a uniformly superheated liquid has been carried out to determine the effects of translational motion of the bubble on the bubble growth rate.

TL;DR: In this paper, it is shown that separation of this boundary layer does not occur, which explains the presence of the micro-layer, which contributes to the growth rate and creates a dry area at its centre.

TL;DR: In this article, a study of the combined free and forced convective heat transfer and fluid flow in a rotating curved circular tube for the fully developed flow with the thermal boundary condition of constant heat flux per unit length of tube was made.