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Título del libro: Asme 2010 10th Biennial Conference On Engineering Systems Design And Analysis, Esda2010
Título del capítulo: Experimental and analytical investigation on a liquid balance ring for automatic washing machines

Autores UNAM:
LEONARDO URBIOLA SOTO; MARCELO LOPEZ PARRA;
Autores externos:

Idioma:

Año de publicación:
2010
Palabras clave:

Analytical dynamics; Analytical investigations; Annular cavity; Damping effect; Fluid flow visualization; Inertial waves; Particle image velocimetry technique; Phase lags; Rigid-body motion; Ring cavities; Swirl flow; Transparent liquids; Unbalanced response; Flow of fluids; Flow visualization; Liquids; Machine design; Systems analysis; Velocity measurement; Washers; Washing; Washing machines; Vibration analysis


Resumen:

A high-speed camera and a Particle Image Velocimetry (PIV) technique are used on a transparent liquid balancing device typical of modern washing machines. Experimental results indicate that the baffles placed inside the ring cavity interact with the fluid for it to develop modes of vibration of circumferential and axial type, thus rendering a complex swirl flow inside the annular cavity comprised of two inertial waves. One of such waves travels backwards relative to the rigid body motion. As as a result, a damping effect is induced and a phase lag with respect to the exciting unbalance occurs. An analytical dynamic model of the unbalanced response is derived and correlated with fluid flow visualization experiments and vibration measurements. © 2010 by ASME.


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