VISCOUS-FLOW THROUGH A SHARP-EDGED ORIFICE

A theoretical solution is proposed for the problem of flow through a t hin orifice plate placed between chambers having large dimensions rela tive to the orifice diameter. Experimental results were obtained using molasses having a viscosity of the order of 1000 poise. These results confirmed the analysis, but Bow was found to be 5-10% less than the t heoretical value. This is attributed to the finite size of the chamber s of the apparatus and the finite thickness of the orifice plate. (C) 1997 Elsevier Science Ltd.