Showing papers in "International Journal of Multiphase Flow in 1978"

TL;DR: In this paper, experimental data for gas holdup in liquid slugs were reported for two different pipe sizes (2.58 cm and 5.12 cm I.D.) and a simple empirical correlation was developed and is shown to be a significant improvement over the only other published correlation proposed by Hubbard (1965).

TL;DR: The system mean void fraction (SVM) model as mentioned in this paper is a generalization of the momentum principle for transient flow problems, and it has been shown to be time-invariant.

TL;DR: In this paper, one-dimensional two-fluid equations are used to calculate the mass flux of initially saturated or subcooled water discharging from a pipe in critical flow.

TL;DR: In this paper, the two-fluid equations describing transient nonequilibrium liquid-vapour flow have been used to derive a general dispersion relation for acoustic waves for both dispersed and separated flow regimes.

TL;DR: In this paper, an experimental study of the motion of dissolving and non-dissolving gas bubbles in a quiescent viscoelastic fluid was conducted to determine the influence of the abrupt transition in bubble velocity, which had been observed at a critical radius of approx.

TL;DR: In this article, a structural model for the interface is suggested in which a suspension of solid bodies representing surfactant molecules is distributed about a singular surface separating two adjacent bulk solvent phases, which is interpreted as meaning that the general jump balance for a continuum dividing surface represented by an interfacial suspension is a local area average.

TL;DR: The configuration of a two-phase bubble constituted of a gas phase and a liquid phase in an immiscible liquid medium is classified into three types: complete engulfing, partial coalescence and non-coalescence as discussed by the authors.

TL;DR: In this paper, the paths of single particles were calculated for the initial state of erosion when the flow in the shock tube boundary layer was still laminar, based on the agreement between the measured height of the cloud and the calculated height of flight of the particles.

TL;DR: In this paper, a new model was developed whereby the wake is treated as the sphere-completing volume of a spherical cap bubble, due allowance being made for hydrodynamic interactions between bubbles.

TL;DR: In this article, the shape and size of a bubble formed slowly on a sharp-or round-edged orifice are derived with the help of a new analytical solution for the bubble profile.

TL;DR: In this article, a technique for simultaneous measurement of the local number and velocity probability densities of a dilute two-phase suspension which has a distribution of particle sizes and a predominate direction of flow orientation is presented.

TL;DR: The motion of a thin circular disk straddling the plane interface of an immiscible two phase creeping flow and moving parallel or perpendicular to the interface is determined in this paper.

TL;DR: In this paper, the hydrodynamics of two droplets submerged in an unbounded arbitrary velocity field are studied by solving Stokes' equations for the flow fields in and around the droplets by means of the reflection method.

TL;DR: In this paper, an experimental study on the flow characteristics of a dilute gas-solid suspension medium in a circular tube, wherein the inlet entry length and the frictional pressure drop are measured systematically, is presented.

TL;DR: In this paper, a method for monitoring time-varying local film thickness variation through the detection of laser scattering from suspended latex particles is briefly described, and the method was used in conjunction with the Jeffreys theory of drainage from a flat plate to determine the time-average film thickness.

TL;DR: In this paper, the authors used resistivity probes to measure void fraction and gas phase velocity distributions for selected vertical and horizontal flow conditions, and these were combined with static pressure measurements to calculate friction factors.

TL;DR: In this paper, the motion of spherical, solid particles, liquid droplets or gas bubbles along their line of centres is considered and conditions are limited to quasi-steady creeping flow and results are presented for drag coefficients and streamlines.

TL;DR: In this article, the authors derived asymptotic expressions for great and small separations of two drops approaching each other along their line of centers of centers in an unbounded liquid.

TL;DR: In this paper, the application of hot-film anemometers in gas-liquid two-phase flow is discussed, and methods are discussed that permit the identification of the vapour-phase using electronic computer programs.

TL;DR: In this paper, the existence and uniqueness of partitioning the inertial coupling terms in the momentum and energy equations of a component in a mixture have been derived when disparate mass velocities and static temperatures exist.

TL;DR: In this paper, the authors derived a flooding condition relating the maximum wave height to the gas velocity at the onset of flooding and the maximum height of the wavy liquid film flowing downwards on a rod surface.

TL;DR: In this paper, an analysis of the steady one-dimensional flow behind a normal shock wave of a compressible gas containing small spherical particles of solid propellant is presented, and the results stress the importance of the Mach number of the strong shock and the energy content of the propellant (J/kg).

TL;DR: In this article, the formation and propagation of shock waves in a two-component flowing bubbly mixture has been investigated experimentally and the structure of the shock wave formed by steepening of compression waves is compared with the corresponding features of shocks produced spontaneously in shock tubes.

TL;DR: In this article, a theoretical and experimental study of liquid film flow and quench front propagation on hot vertical surfaces in the presence of single and two-phase upflows is reported.

TL;DR: In this article, a single horizontal orifice submerged in an aqueous solution of sodium carboxymethylcellulose (C.M.C.) was shown to emit nitrogen bubbles.

TL;DR: In this article, a method of definining the one-dimensional theory of matter transfer, accounting for the difference of mixture component velocities is presented, which generalises the well-known Taylor and Aris models.

TL;DR: In this article, the problem of heat transfer to a non-Newtonian laminar falling liquid film flowing along an inclined wall for the thermally developing and thermally developed regions was investigated analytically.

TL;DR: Both solution procedures, applied to the homogeneous equlibrium model, are shown to adequately predict blowdown benchmark experiments and a thermal non-equilibrium model is shown to provide adequate predictions.

TL;DR: In this paper, the effects of branch angles, discharge ratios of air into the branehed pipe and solid-air loading ratios on the pressure drop due to branching was considered.