Ch 7. Incompressible and Inviscid Flow Multimedia Engineering Fluids Bernoulli'sEquation FlowMeasurements Superpositionof Flows Flow aroundCylinder
 Chapter 1. Basics 2. Fluid Statics 3. Kinematics 4. Laws (Integral) 5. Laws (Diff.) 6. Modeling/Similitude 7. Inviscid 8. Viscous 9. External Flow 10. Open-Channel Appendix Basic Math Units Basic Equations Water/Air Tables Sections Search eBooks Dynamics Fluids Math Mechanics Statics Thermodynamics Author(s): Chean Chin Ngo Kurt Gramoll ©Kurt Gramoll

 FLUID MECHANICS - CASE STUDY SOLUTION Problem Diagram Rotameter The flow rate of the faucet is given by Q = umAm The float of the rotameter is 10 mm from its base (i.e., y =10 mm). Hence, the area of the annular space is      The mean velocity of the water passing through the annular space is given by       The volume and frontal area of the ball are calculated to be               Now, the mean velocity um can be calculated as       The volume flow rate is thus given by      Q = (1.05 m/s)(15.9 mm2) = 16.7 (10-6) m3/s The total volume of the water wasted in a 30-day period is       Vtotal = (16.7)(10-6)(30)(24)(60)(60) = 43.3 m3 The corresponding cost is    = (43.3 m3) (\$1.75/1000 gal) (1 gal/0.003785 m3)    = \$20.02

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