yeniintro[2] - 1. INTRODUCTION The problem is how to...

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1. INTRODUCTION The problem is how to measure the viscosity of fluids and the objective is to find viscosity to use it in engineering calculations. Viscosity of aqueous glycerol solutions at different temperatures and concentrations are measured with three measurement methods in this experiment. These methods are Capillary Flow Method, Falling Ball Method, and Rotating Shaft Method. Firstly, background information about experiment is given below. Then, three measurement techniques will be explained which are applied in the laboratory. 1.1. Viscosity Viscosity is a measure of the resistance to flow when a shearing force is applied on the fluid. The viscosity is constant regardless of shear stress or shear rate according to Newton’s Viscosity Law (F/A=-µ.dU/dX). Fluids which obey Newton’s Viscosity Law called Newtonian fluids. For a Newtonian Fluid, the relationship between the shear stress and velocity gradient is linear. Non- Newtonian fluids can be defined as fluids with a viscosity which is not constant, but varies
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This note was uploaded on 05/01/2011 for the course CHE che 320 taught by Professor Ahmetarslan during the Spring '11 term at Middle East Technical University.

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yeniintro[2] - 1. INTRODUCTION The problem is how to...

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