Transition Velocity for the Annular Flow of Viscoplastic Suspensions
In this work are obtained generalized Reynolds and Hedstrom numbers connected with a three parameter rheological model to correlate the friction coefficient for the laminar, transitional and turbulent regime in annular flow. The use at experimental data covering a considerable range of dimensionless numbers for the flow of bentonite suspensions leads to a calculation technique for the transition velocity and pressure drop of these suspensions in annular geometries.
KeywordsFriction Coefficient Drill Fluid Annular Flow Turbulent Region Transition Velocity
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