%0 Journal Article %A Ntamba Ntamba, Butteur Mulumba %A Fester, Veruscha %D 2019 %T Pressure losses and limiting Reynolds numbers for non-Newtonian fluids in short square-edged orifice plates %U https://esango.cput.ac.za/articles/journal_contribution/Pressure_losses_and_limiting_Reynolds_numbers_for_non-Newtonian_fluids_in_short_square-edged_orifice_plates/9114953 %R 10.25381/cput.9114953.v1 %K Pressure Loss Coefficient %K Newtonian and non-Newtonian %K Reynolds Numbers %K Short Square-Edged Orifice Plates %K Fluidisation and Fluid Mechanics %X Correlations predicting the pressure loss coefficient along with the laminar, transitional, and turbulent limiting Reynolds numbers with the β ratio are presented for short square-edged orifice plates. The knowledge of pressure losses across orifices is a very important industrial problem while predicting pressure losses in piping systems. Similarly, it is important to define stable operating regions for the application of a short orifice at lower Reynolds numbers. This work experimentally determined pressure loss coefficients for square-edged orifices for orifice-to-diameter ratios of β" role="presentation" style="margin: 0px; padding: 0px; border: 0px; font-variant: inherit; font-stretch: inherit; line-height: normal; font-family: inherit; vertical-align: baseline; display: inline; text-align: left; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative;">ββ = 0.2, 0.3, 0.57, and 0.7 for Newtonian and non-Newtonian fluids in both laminar and turbulent flow regimes. %I Cape Peninsula University of Technology