Effects of turbulization on the disc pump performance
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Fecha
2019
Autores
Martínez-Díaz, Leonel
Hernández Herrera, Hernán
Castellanos González, Luis Marcos
Varela Izquierdo, Noel
Reyes Carvajal, Tirso
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Editor
ElSevier
Resumen
Disc pumps are used for difficult pumping applications, such as, pumping of high suspension
solids and abrasives, viscous fluids, air entrained and shear sensitive fluids. The pumping
mechanism, based on the boundary layer effect and the viscous drag minimizes the contact between
the pump and the fluid reducing the wear level; but the pumping mechanism itself makes its efficiency
low in comparison with other pumps for similar applications. This research aims to increase
the performance of this pump developing a new experimental study based on the turbulization of
flow by the placement of turbulizers in the interdisc channel output. The variables involved are
the angular velocity (x) and the cross section shape of the turbulizers. Eight impellers were constructed
and evaluated using as cross section shape of turbulizers: the triangular, circular, and
square. The experimental results show that the creation of circulatory currents, according to the
Kutta-Johkovsky theorem, contributes to the increase the efficiency and the head of the disc pump
and the square cross section shape of the turbulizers offers the best results.
Descripción
Palabras clave
Boundary layer, Disc pump, Circulation, Turbulizers, Viscous drag