Hydrodynamic simulation of a shallow raceway tank for the culture of the red urchin Loxechinus albus (Molina, 1782)
DOI:
https://doi.org/10.33936/at.v4i3.5365Keywords:
Computational fluid dynamics, Onshore sea urchins` culture , Water qualityAbstract
A computational fluids dynamics - CFD simulation was carried out on a shallow tank design for the sea urchin (Loxechinus albus) culture, with the purpose of observing the hydrodynamic behavior regarding geometry, water inlet, homogenization, and removal potential of biosolids, which would influence the quality of the water required for the culture. The pond design had a length-width ratio of 6:1 and a maximum depth of 0.28 m. The simulation was performed with continuous flow and another with discharges of 4 and 12 gpm (15.1 and 45.4 L min-1, respectively) using Autodesk® CFD 2021 software. The results showed that in both flows high turbulence caused by the inlet velocity was generated, which quickly dissipated giving way to velocities between 1 and 16 cm s-1. The movement of water within most of the system did not exceed 2 cm s-1. The simulated conditions favored mixing and homogenization, but the entrainment of particles depended on the flow rate. The results obtained allow us to propose and incorporate improvements to the original design before carrying out field tests in a real tank, with the aim of improving both the quality of the water and the well-being of the specimens in culture.
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