Lab-3 Bernoulli Equation-dipa

Lab-3 Bernoulli Equation-dipa - Lab-3 Bernoulli Equation...

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Lab -3 Bernoulli Equation General Information Worksheet and Spreadsheets due Thursday by 12 noon Lab Reports due Tuesday by 4.00 pm
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Objectives To investigate the validity of Bernoulli’s equation as applied to a tapering horizontal tube To determine if the variations in Static pressure head can be predicted by Bernoulli’s equation for tapering horizontal tube
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Figure1: Test Section and Manometer tubes
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2 2 1 1 2 2 1 2 2 2 V P V P z z g g γ + + = + + Theory Bernoulli’s Equation: 2 2 1 1 2 2 1 2 2 2 V P V P z z g g + + = + + 2 2 1 1 2 2 2 2 V P V P g g + = + 1 P = pressure head or static head = h 2 1 2 V g = velocity head = h v …………………….(1) 2 2 V P g + = Total head =hT = hs + hv …………. .(2)
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Bernoulli made some assumptions for his equation to work: Inviscid (no shear stress) Flow is steady Points 1 and 2 which you are comparing are in the same streamline Density of the fluid is constant System is not accelerating Assumptions
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2.9 5.0 7.4 15.8 76.08 55.46 b c d e a f Tube diameter (mm) a 25.0 b 13.9 c 11.8 d 10.7 e 10.0 f 25.0
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Lab-3 Bernoulli Equation-dipa - Lab-3 Bernoulli Equation...

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