Abstract
Summary The flow behavior of a Marsh funnel was numerically simulated for power law fluids and was found to give good agreement with experimental measurements. As a result, the simulation provides a general picture of the meaning of the Marsh funnel time and a correlation enabling this to be converted into a value for effective viscosity of non-Newtonian fluids. For field use, the following equation relates the effective viscosity μe (cp) to the Marsh funnel (quart) time t (seconds) and the density ρ (g/cm−3) μe = ρ (t-25).
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