No abstract

No abstract

The paper presents comprehensive experimental and numerical studies on water flow through rectangular S-shaped diffusers. The experimental setup was designed and constructed to perform the measurements which have been carried out on twelve models of S-shaped diffusers. The measurements of pressure distributions along the outer and inner walls of the S-shaped diffuser were performed for different parameters including area ratios, curvature ratios, inflow Reynolds numbers, turning angles (45 • /45 • , 60 • /60 • , 90 • /90 •), and flow paths (45 • /45 • , 60 • /30 • , 30 • /60 •). The energy-loss coefficients for each model are based on detailed measurements of the wall pressure distributions along walls of the S-shaped-diffuser models including long upstream and downstream tangents. The energy-loss coefficient data were plotted as a function of Reynolds number for the tested models at different geometrical parameters. The experimental data for different S-diffuser configurations have been used for assessing credibility of the numerical code using different turbulence models. High performances of computations with turbulence closure provided by

No abstract