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Unformatted text preview: manometer
consisting of two fluids A and B We will assume that gravity acts in the vertical direction, and the origin of out coordinate system is
located somewhere below the U-tube. The location is material for the analysis. Again the hydrostatic
pressure field is given by
0, x 0 y (28) z Now if the pressure in the bulb is p1 then the pressure at the fluidA/b interface is
p2 ΡA g H1 p1 (29) At the fluid B/air interface it is
p3 patm p2 ΡB g H2 (30) Thus the difference in pressure read by the manometer is
patm p1 ΡA g H1 ΡB g H2 (31) so that
p1 patm g ΡA H1 ΡB H2 Thus a manometer opened at one end to atmospheric pressure reads gage pressure (32) 6 Hydrostatics.nb References
The following texts were helpful in preparing these notes 1. Anthony Esposito, Fluid Mechanics with Applications, Prentice Hall,1998
2. Stephen Whitaker, Introduction to Fluid Mechanics, Kreiger Publishing Company, 1968...
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This document was uploaded on 03/16/2014.
- Spring '14