Article

Determinación de la viscosidad de fluidos newtonianos y no newtonianos (una revisión del viscosímetro de Couette)

Latin-American Journal of Physics Education 01/2010;
Source: DOAJ

ABSTRACT Newtonian viscosity is studied in the theoretical and laboratory courses of physics of fluids in natural sciences andengineering. Because of the increasing use of Non-Newtonian fluids is necessary to include them in these courses. Todriving experiences that enable to the students to distinguish between Newtonian and non-Newtonian fluids will allowto improve their knowledge about fluids. The purpose of this work is to give a didactic tool to differentiate betweenNewtonian and Non-Newtonian fluids by using their flow curves. In addition, the details of a concentric cylindersviscometer (Couette Viscometer) construction of low cost are shown, the which one can be manufactured by thestudents. Finally, the characterization of two commercial fluids is included.

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