Rheology And Pressure Loss Measurements
Of Silt Samples Extracted From A Dam Reservoir
Author(s)
M. Belhadri, A. Nemdili & A. Ladouani
Abstract
In this paper rheology and pressure loss measurements of fully developed silt
flow in circular, axisymetric and horizontal conduits are presented. The silt
samples studied have been taken at two different distances from the considered
dam reservoir.
It was found that for small values of silt concentrations, the silt behaves like a
Newtonian fluid. Above a concentration limit, its behavior is like a Bingham
one; a non-Newtonian behavior. The measured pressure losses indicated that the
pressure loss of silt mixture flow increase with increasing mixture concentration.
The comparison of pressure loss coefficients characteristics for the three
different conduits show that the pressure loss coefficient is independent of the
conduit diameter.
Keywords: silt, concentration, rheology, pressure loss, conduits.
1 Introduction
Fluids such as silt, crude oil and its derived products occurring in transport
installations have a complex flow structure and behavior. Much of their flow
aspects in conduits and singularities are very little known.
Silt transported by Algerian rivers and settling in dam reservoirs has physical
properties of soils of the clay type. Previous works have shown that
granulometry of this silt at the deflocculated state varies between 1 and 50 µm
and a distinct granulometric classification exits in the basin of each reservoir.
Keywords
silt, concentration, rheology, pressure loss, conduits.
Related Book
Other papers in this volume
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