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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 captured-volume 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