Hindered settling and consolidation of mud - analytical results

The theory of hindered settling from a suspension developed by Kynch (1952) is known to satisfactorily describe the settling and primary consolidation of mud. This theory, in which effective stresses are disregarded, is reviewed for this purpose, and some analytical results for interface formation and consolidation are obtained. In particular it...

An improved settling tube system for sand

General design aspects of settling tube systems for fall velocity analysis of sand are reviewed, with emphasize being placed on detection methods for particle arrival at the lower end of the settling column and the various sources of errors. This is followed by a detailed discussion on the development of an improved settling tube system...

Design aspects and performance of a settling tube system

The DUST (Delft University Settling Tube) is a settling tube system intended to analyse particle size (settling velocity) of sand ranging from 0.06 mm to 2 mm, with the sample mass varying from 0.5 g to 20 g. The main parts of the system are (see fig. 1): a. the sample introduction device (venetian blind with rotating lamellae) b. the settling...

The effect of gas release on column separator

A mathematical model has been considered in which the influence of gas release on transient cavitating flow and column separation in pipel ines is taken into account. A rei iable numerical method has been developed for the computation of the wave propagation and cavitation phenomena following pump fai lure, valve closure, etc. Good agreement has...

Concentration effects on settling-tube analysis

A mathematical model describing the unsteady stratified settling of sediment samples and nonuniform suspensions has been developed, taking into account the influence of the sediment concentration on the fall velocity. In principle, the resulting equations can be solved using the method of integration along characteristics. An estimating...