Flow of Suspensions through Pipes

Wilhelm, Richard; Wroughton, D. M.; Loeffel, Willis F.

doi:10.1021/ie50353a022

Cited by 24 publications

(7 citation statements)

References 5 publications

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“…They showed that the usual friction factor versus Reynolds number plots can be obtained in the turbulent region provided the viscosity of the fluid medium and density of the slurry are used in calculating the Reynolds number. Similar correlations of data on the turbulent flow of concentrated suspensions of cement rock and filtercel in water were obtained by Wilhelm, Wroughton, and Loeffel (11), using viscosity data corrected for yield value. Alves, Boucher, and Pigford (1) measured the flow of lime and titanium dioxide slurries in the turbulent region and found the turbulent viscosity from a plot of / versus DVsws¡.…”

supporting

confidence: 73%

Equipment Design Data—Flow of Solid-Liquid Suspensions in Vertical Columns

Bhattacharya¹,

Roy²

1955

Ind. Eng. Chem.

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supporting

confidence: 73%

Equipment Design Data—Flow of Solid-Liquid Suspensions in Vertical Columns

Bhattacharya¹,

Roy²

1955

Ind. Eng. Chem.

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“…The theory of Hanks and Dadia ( 197 I ) predicts a different pattern with the Bingham line nearly paralleling the Newtonian line, and other experimental data, e.g. Caldwell and Babbitt (1941), Wilhelm et al (1939), D. G . Thomas (1960Thomas ( , 1962 and A. D. Thomas (1981) show the same trend.…”

Section: Bingham-plastic Modelmentioning

confidence: 82%

A new analysis of the turbulent flow of non‐newtonian fluids

1985

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A new analysis has been developed for the turbulent flow of non-Newtonian fluids. Based on enhanced viscosity effects at the small time and length scales of the dissipative micro-eddies, the analysis predicts a thickening of the viscous sub-layer tending to increase throughput velocity and thus promoting drag reduction. The required flow parameters can be determined directly from rheograms, without employing correlations based on pipe-flow data. The results give good descriptions of flows of fluids with both power-law and Bingham behaviour and explain a number of peculiarities of such flows.On propose une nouvelle mCthode d'analyse des Ccoulements de fluides non newtoniens. Cette analyse est fondte sur I'augmentation de la viscosit6 dans les microtourbillons (Cchelle de Kolmogorov) et permet de pr6dire un Cpaississement de la sous-couche visqueuse. I1 s'ensuit une augmentation de la vitesse d'6coulement et donc une rkduction de la rtsistance due h la friction. Les parametres necessaires h cette analyse peuvent &tre directement obtenus h partir des rhkogrammes, I'utilisation de corrtlations empiriques &ant rendue inutile. Cette m6thode a ttt testte avec des fluides de type plastique de Bingham et loi de puissance; elle permet de dCcrire avec rkalisme le comportement des fluides ainsi que d'expliquer certaines de leurs particularitks.he flow of non-Newtonian fluids is reasonably well-

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“…( 3 2 ) were found to correlate excellently, but their fluids were so nearly Newtonian (n' values of 0.885 to 0.985, as compared with 1.000 for a Newtonian fluid) that inclusion of these data would not have contributed significantly. The data of Wilhelm et al (31) for 3-in. pipes were also omitted because of failure of this part of their system to give the correct results with Newtonian liquids, and similar judgment was used in eliminating the data of many other authors.…”

Section: Transition From Laminar To Turbulent Flowmentioning

confidence: 95%