Abstract
The existing relationships based on Durand's method to predict pressure gradients for slurry flow in pipelines appear to be inadequate when
accounting for a wide range of variables such as particle size and relative density as well as concentration.
Using the coal, sand and iron ore data collected from various literature sources with the aid of non-dimensional analysis, new equations for the case of the heterogeneous flow regime were derived on the base of non-dimensional parameters.
The equations have the same structure for each material considered, but the coefficients are different.
