Author(s): Jose M. Carrillo; Juan T. Garcia; Katherine Guachamin-Paladines; Alicia Ros Bernal; Luis G. Castillo

Linked Author(s): José M. Carrillo

Keywords: CFD; SPH; Coanda effect; validation of numerical models; intake capacity

Abstract: In this paper, clear water is studied on a Coanda effect screen consisting of 2.4 mm thick wedge wires, 1.0 mm slot opening and 5º inclination angle with respect to the plane of the screen, arranged perpendicular to the flow. The screen is inclined at 60° to the horizontal. The experiments were carried out in a 0.5 m wide channel with flow rates between 16.66 and 72.22 l/s/m. To the best of our knowledge, this is the first time that bottom intake systems have been numerically simulated using a smoothed particle hydrodynamics (SPH) model. The code used is called DualSPHysics (GNU Lesser General Public License). The results are compared with experimental measurements, with two commercial computational fluid dynamics models based on mesh methods (FLOW-3D® and ANSYS CFX®) and with a Coanda spreadsheet available in the literature.

DOI: https://doi.org/10.3929/ethz-b-000675921

Year: 2024