By C.A. Shook, M C. Roco and Howard Brenner (Auth.)
Slurry circulation: rules and perform describes the fundamental thoughts and techniques for knowing and designing slurry circulate structures, in-plan installations, and long-distance transportation structures. The target of this e-book is to allow the layout or plant engineer to derive the utmost make the most of a constrained volume of try out information and to generalize working adventure to new occasions. layout techniques are defined intimately and are observed through illustrative examples wanted via engineers with very little prior event in slurry transport.
The technical literature during this box is wide: this booklet allows its use by means of surveying present study effects and supplying factors of mechanistic move versions. This dialogue of heritage clinical ideas is helping the practitioner to raised interpret try out facts, choose pumps, specify fabrics of development, and select measuring devises for slurry delivery platforms. The huge variety of themes coated in Slurry movement: ideas and perform contains slurry rheology, homogeneous and heterogeneous slurry move ideas, put on mechanisms, pumping gear, instrumentation, and working aspects.
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Slurry circulation: ideas and perform describes the elemental thoughts and strategies for figuring out and designing slurry stream structures, in-plan installations, and long-distance transportation structures. The target of this publication is to permit the layout or plant engineer to derive the utmost take advantage of a restricted volume of try facts and to generalize working adventure to new occasions.
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Additional resources for Slurry Flow. Principles and Practice
3 SHEAR IN AN ANNULUS The second important viscometric flow for slurries occurs in the annular space between two concentric cylinders when one of the cylinders is rotated and the other is held stationary. The momentum equation for the tangential direction is obtained by neglecting inertia and gravity in Equation Al-5. We assume the only velocity component is tangential, that the flow is axially symmetric and independent of x. This yields r 27rq = constant (3-5) for flow in the space between the cylinders.
Equations 2-11 and 2-12 then show that ns and 1L must also be constant in this region so that the inertial forces in the momentum equations can be neglected. Comparing terms in the momentum equations, we see that unless the concentration c is very low or the particles are very large, the interfacial drag forces are likely to be very much greater than the wall-produced forces. We, therefore, neglect fsw and fb„. Figure 2-3. Settling of a slurry. 34 SLURRY FLOW: PRINCIPLES AND PRACTICE The momentum equations then reduce to a balance of gravity, pressure, and drag forces.
For concentric cylinders, the measured variables are the angular velocity (w) of one of the cylinders and the torque per unit height T. The latter is usually measured at the inner cylinder. Table 3-1 gives the relationship between the measured quantities for viscometric tube flow of Newtonian fluids. Of the non-Newtonian models, the Bingham fluid is probably the most useful two-parameter relationship for slurries. According to this model, the shear stress must exceed a limiting value, the yield stress ty , for flow to occur at all.
Slurry Flow. Principles and Practice by C.A. Shook, M C. Roco and Howard Brenner (Auth.)