EGR 1301 Lecture 21: Fluids 1
23 Dec 2016
School
Department
Course
Professor
Document Summary
Temperature is a measure of internal energy level of a fluid. Pv=nrt: n/v = p/rt = density, r = 8. 314 j/k*mole (gas constant, t = absolute (kelvin) Density, (rho: mass per unit volume: =m/v, nearly constant in liquids--often assumed to be incompressible to simplify analysis. Specific weight, (gamma: weight per unit volume: = g. Specific gravity (aka relative density) is the ratio of the density of a substance to the density of a reference substance. Not to be confused with specific weight: hw10 pdf from one of the problems: specific gravity is just the ratio of density of a material to water. Thus, a specific gravity of 1. 25 corresponds to a density of material = 1. 25water: because fluid conforms, pressure is same at all points (for a given depth, varies with depth. Change in elevation of a liquid is equivalent to a change in pressure.
