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 mu(e) (cp) to the Marsh
funnel (quart) time t (seconds) and the density rho(g/cm(-3)) mu(e) = rho(
t-25).