𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Transition from laminar to turbulent flow of purely viscous non-Newtonian fluids in tubes

✍ Scribed by P. Mishra; G. Tripathi

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
471 KB
Volume
26
Category
Article
ISSN
0009-2509

No coin nor oath required. For personal study only.

✦ Synopsis

A criterion for stability of laminar flow of purely viscous non-Newtonian fluids is proposed and compared with the criterion of Ryan and Johnson, and Hanks. The proposed criterion is found to be in good agreement with the experimental findings given in the available literature. A generalized relation for the laminar friction factor is derived in terms of the dimensionless groups. Further, the use of the differential viscosity in Reynolds number is demonstrated to predict the turbulent friction factor to give single valued correlation.

πŸ“œ SIMILAR VOLUMES

The laminar-turbulent transition in noni
The laminar-turbulent transition in nonisothermal flow of pseudoplastic fluids in tubes
✍ Richard W. Hanks; E. B. Christiansen πŸ“‚ Article πŸ“… 1962 πŸ› American Institute of Chemical Engineers 🌐 English βš– 553 KB

## Abstract Ryan and Johnson's treatment of the transition from laminar to turbulent flow is extended to include the heated flow of pseudoplastic liquids in smooth tubes. A limitation is pointed out for the case of Bingham plastic fluids. The theoretical results of the present investigation are co

A Unified Model for the Mixing of Non-Ne
A Unified Model for the Mixing of Non-Newtonian Fluids in the Laminar, Transition, and Turbulent Region
✍ Karl-Heinz Wassmer; Klaus-Dieter Hungenberg πŸ“‚ Article πŸ“… 2005 πŸ› John Wiley and Sons 🌐 English βš– 151 KB

## Abstract **Summary:** Non‐Newtonian fluid behavior has significant influence on quantities in chemical engineering like power input, mixing time, heat transfer etc. In the laminar flow region, the concept of effective viscosity by Metzner and Otto is well established. In the transition region be