By R. P. Chhabra, J.F. Richardson
Non-Newtonian fabrics are encountered in nearly all the chemical and approach industries and a whole realizing in their nature and move features is a necessary requirement for engineers and scientists interested in their formula and dealing with. This e-book will bridge the space among a lot of the hugely theoretical and mathematically advanced paintings of the rheologist and the sensible wishes of these who've to layout and function crops during which those fabrics are dealt with and processed. while, quite a few references are integrated for the advantage of those that have to delve extra deeply into the subject.The start line for any paintings on non-newtonian fluids is their characterisation over the variety of stipulations to which they're more likely to be subjected in the course of manufacture or utilisation, and this subject is handled early on within the ebook in a bankruptcy commissioned from knowledgeable within the box of rheological measurements. assurance of subject matters is large and this publication deals a different and wealthy collection of fabric together with the move of unmarried part and multiphase combos in pipes, in packed and fluidised mattress platforms, warmth and mass move in boundary layers and in easy duct flows, and combining etc.An vital and novel function of the ebook is the inclusion of a big variety of labored examples to demonstrate the equipment of calculation. It additionally encompasses a huge collection of difficulties for the reader to take on himself.
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Extra info for Non-Newtonian flow in the process industries: fundamentals and engineering applications
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Certainly, the fitting of an empirical viscosity model to limited data should not be used as a justification for extrapolating the results beyond the experimental range of shear rates or shear stresses. g. the power-law and the Bingham plastic model) to a given set of data equally well, and the choice is largely based on convenience or individual preference. Frequently, it is not possible to decide whether a true yield stress exists or not. Therefore, some workers prefer to refer to an ‘apparent yield stress’ which is an operational parameter and its evaluation involves extrapolation of data to zero shear rate, often the value depending upon the range of data being used to evaluate it.
R. Williams, Reader, Department of Chemical and Biological Process Engineering, University of Wales Swansea. 38 Non-Newtonian Flow in the Process Industries many process flows, which typically involve pipes, capillary viscometers are widely employed in process engineering applications and are often converted or adapted (with relative ease) to produce slit or annular flows. 1 Analysis of data and treatment of results It is convenient to consider the case of an ideal capillary viscometer involving a fluid flowing slowly (laminar) and steadily through a long tube of radius R, at a constant temperature, and with a pressure drop p t between its ends [Whorlow, 1992].
Non-Newtonian flow in the process industries: fundamentals and engineering applications by R. P. Chhabra, J.F. Richardson