Civil and Environmental Engineering 2224 Study Guide - Final Guide: Specific Weight, Dilatant, Perfect Fluid
9 Dec 2018
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Section 1 review is super tiny and not big enough to upload. Because of continuum we assume it varies consistently throughout the fluid. We typically only think about that in gasses though. All liquids are relatively continuous and we can then make the assumption that liquids are incompressible. The specific weight of a fluid is it"s weight per unit volume. W = mg, density and specific weight of a fluid are related by. The specific gravity (or relative density) sg of a fluid is simply the ratio of a fluid density to a standard reference fluid. For liquids that reference fluid is water at 4oc. Viscosity ( ) is a measure of a fluid"s resistance to shear. Higher viscosity means higher resistance to shear which means deforms slower. Lower viscosity means lower resistance to shear which means deforms faster. A relationship involving viscosity can be derived as. = viscosity dv/dy = velocity gradient = rate of deformation.
