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Sunday, October 18, 2020 | History

2 edition of Liquid film flow and solid liquid separation on a rotating inclined surface found in the catalog.

Liquid film flow and solid liquid separation on a rotating inclined surface

L. R. Beardall

Liquid film flow and solid liquid separation on a rotating inclined surface

by L. R. Beardall

  • 288 Want to read
  • 9 Currently reading

Published .
Written in English


Edition Notes

Thesis(Ph.D.) -Loughborough University of Technology 1968.

Statementby L.R. Beardall.
ID Numbers
Open LibraryOL19705266M

The numerical solution of magnetohydrodynamic (MHD) and rotating flow over a porous shrinking sheet is obtained by the new approach known as spectral homotopy analysis method (SHAM). Using a similarity transformation, the governing equations for the momentum are reduced to a set of ordinary differential equations and are solved by the SHAM approach to determine velocity distributions and   A device includes a compartment for separating the solids and liquids. The compartment includes a base that is concavely curved according to a cylindrical portion having a transverse axis and is formed of a sieve, an idler roller mounted transversely on an arm, a drive which actuates the arm, and resilient means for adjusting the pressure exerted by the

Abstract. The no-slip boundary condition at a solid–liquid interface is at the center of our understanding of fluid mechanics. However, this condition is an assumption that cannot be derived from first principles and could, in theory, be :// The steady and unsteady flow characteristics of internal flow in a backward centrifugal fan of double inlet at low flow-rate condition are investigated by computational fluid dynamics in this paper. The investigation aims to reveal insights into generation mechanisms and our physical understanding of the rotating stall and surge. The numerical results mainly demonstrate that, with decreasing

  U. Thiele, B. Goyeau, and M. G. Velarde, “ Stability analysis of thin film flow along a heated porous wall,” Physics of Fluids 21 (). discussed the study the thin liquid flow on an inclined porous surface. Siddiqui et al. 21 A. ://   () Dynamics and stability of a thin liquid film on a heated rotating disk film with variable viscosity. Physics of Fluids , () A mathematical model for atmospheric ice accretion and water flow on a cold ://


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Liquid film flow and solid liquid separation on a rotating inclined surface by L. R. Beardall Download PDF EPUB FB2

Liquid film flow and solid-liquid separation on a rotating inclined surface The design of the rotor is such that at least part of its surface is inclined away from its axis of rotation and as the liquid film flows down this surface, solid particles are removed from the liquid film ?uin= Solid–liquid separation and drying.

For FS, the feces–liquid mix arising from decentralized storing of toilet waste, solid–liquid separation is obtained in settling–thickening tanks or on sludge drying beds (planted or unplanted; Strauss and Montangero, ). Whereas the settling–thickening tank is a pretreatment, which should be   The spinning cone column (SCC) is a distillation device now used in the food industry for the separation of volatile components from liquids and slurries (Casimir and Craig, ; Casimir et al., ; Sykes and Prince, ).An SCC consists of a vertical succession of alternate rotating and stationary cones ().Liquid flows as a film down the stationary cone, drains into the base of the Energies13, 2 of 15 the fluid film movement, heat and mass transfer in column equipment, the separation of gas-liquid mixtures, and fluid flow in heat :// An experimental study of heat transfer into a thin liquid film on a rotating heated disk is described.

Deionized water was introduced at the center of a heated, horizontal disk with a constant film thickness and uniform radial velocity. Radial distribution of the disk surface temperatures was measured using a thermocouple/slip ring ://   A theoretical analysis was developed to predict the apparent viscosity of a non-Newtonian fluid in a rotating packed bed.

It is based on laminar liquid film flow on a rotating disk with the assumption of the randomly inclined surfaces in the rotating packed bed.

In addition, experiments of deoxygenation were performed in glycerol solutions and CMC solutions, which are Newtonian and shear The liquid film was spread and contracted several times on the horizontal surface, but the expanded droplet merely slipped without noticeable contraction on the inclined ://   4.

Gravitational flow of a liquid film down an inclined or vertical plane 5. Gravitational flow of a liquid film down the inner or outer surface of a round vertical tube 6. Gravitational flow of a liquid through an inclined half-full round tube 7.

Flow induced by ~ceng/   Liquid flow of lmin-t at rpm. Image size 59mm by 42 mrn. 20 30 40 50 Fig. Declon filtren HC10 packing material. promote wandering film flow as the main method of liquid transport in these systems. The high acceleration within RPBs packed with reticulated material tends to inhibit lateral spreading and flow over inclined :// Liquid-liquid (or solvent) extraction is a countercurrent separation process for isolating the constituents of a liquid mixture.

In its simplest form, this involves the extraction of a solute from a binary solution by bringing it into contact with a second immiscible solvent in which the solute is   The rotating packed bed (RPB) was first proposed and developed by Prof. Colin Ramshaw in the s (Ramshaw and Mallinson,Ramshaw, ) and a typical RPB is shown in Fig.

system comprises of a rotating packed bed, static chamber, gas inlet tube situated on the top of the static chamber, a gas outlet tube connected to the central inner part of the rotating packed bed, a liquid   A mathematical model is developed for fluid flow in the spin coating process.

Spin coating employs centrifugal force to produce coatings of uniform thickness. The long-wave or lubrication approximation is used for the flow of thin liquid layers that are exposed to the air and lie on a spinning horizontal solid substrate.

For low rotation rates, steady axisymmetric drop shapes can be found   The latter makes liquid flow in one direction, while a suitable pressure gradient forces the vapor in the opposite direction.

MacInnes et al. () designed a rotating spiral microchannel distillation device which achieved a liquid film thickness of 50 μm. Spiral microchannels were etched to a depth of 95 μm and they were μm :// Behavior of a liquid film flows down counter-currently on the inner surface of a circular pipe was examined.

In experiments, silicon oils ofand cSt as well as water were used as Thin film flow of a power law liquid 35 falling from an inclined plate was studied by Maladinora et al. [5]. Taza Gul et al. [6] investigated thin film flow of third grade fluid with slip boundary The shape of the film-vapor interface is found for a thin liquid film separating from a stationary surface and being swept away on an opposing moving surface.

The analysis is for two-dimensional Newtonian flow, and includes the effects of gravity, inertia, and surface :// The development of a liquid film at the outer collecting wall of the device is characteristic of a rotating separator, in which liquid droplets or mists have to be separated from gases [4].

This The concept of disjoining pressure, developed from thermodynamic and hydrodynamic analysis, has been widely used as a means of modeling the liquid-solid molecular force interactions in an ultra-thin liquid film on a solid ://   Effect of a liquid flow on the forces between charged solid surfaces and the non-equilibrium electric double layer.

Advances in Colloid and Interface Science, DOI: /ps:// Methods to measure surface tension, such as the Wilhelmy Plate method (), Tate’s falling drop method (), and Dupré’s concept to determine relationship between the solid− liquid work.

Many bubbles appeared as the gas pocket was crushed by the blade surface or the jet flow. In general, the self-priming capacity was determined by the mixing rate of gas and liquid, the transporting rate of a gas-liquid mixture from the volute to the gas-liquid separation chamber, and the separating rate of gas from ://Film downflow from captured liquid without wave formation and its destruction is one of the most important aspects in the development of separation equipment.

Consequently, it is necessary to create well-organized liquid draining in areas of captured liquid. Thus, the proposed 3D mathematical model of film downflow allows for the determination of the hydrodynamic parameters of the liquid film The model is found to capture the correct trends of the liquid film thickness variation over the disk surface and compare reasonably well with experimental results over the range of Reynolds and Rossby numbers covering both inertia and rotation dominated regimes.

Nusselt number variation over the disk surface shows two types of ://