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Unformatted text preview: 5. From the manufacturer’s calibration curve, select 6 appropriate data points. On the same graph in (4), plot Q man,SG=1 vs. bob height. Venturi Experiment 1. Set up the venturi on the flow bench. 2. Use the supply valve to vary the flow. At each flow setting, a. Use the capturedvolume method to determine the experimental flow rate Q exp . b. Record the pressure drop Δ p . Page 2 of 2 FLOW METERING MAE 306 c. Record the water temperature. 3. Plot Q exp vs. Δ p . 4. From the water temperature, look up water density using the given chart. 5. Given throat entrance diameter D 1 = 0.248 in., and throat diameter D 2 = 0.125 in., calculate the ideal flow rate using ⎥ ⎦ ⎤ ⎢ ⎣ ⎡ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − Δ = 2 1 2 2 1 2 A A p A Q ideal ρ where A 1 and A 2 are entrance and throat areas. 6. Calculate the discharge coefficient using ideal exp Q Q C = . 7. Plot Q ideal vs. Δ p on the same graph in (3)....
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This note was uploaded on 05/05/2010 for the course MAE 306 taught by Professor Gilbert during the Spring '08 term at N.C. State.
 Spring '08
 GILBERT

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