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ASE 120L - Flow Measurement Devices

ASE 120L - Flow Measurement Devices - ASE 120K Lecture...

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ASE 120K Lecture Notes The University of Texas at Austin Department of Aerospace Engineering & Engineering Mechanics ASE 120K Low Speed Aerodynamics Laboratory FLOW MEASUREMENT DEVICES I Prof. Charles E. Tinney WRW-301A 512.471.4147 [email protected] Instructor:
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ASE 120K Lecture Notes Outline The Manometer U-tube manometer Inclined tube manometer The Pitot Tube Bernoulli’s Equation Constant Temperature Anemometry King’s Law Single and multi-wire probes Bridge Circuits and Calibration Rectification errors Summary
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ASE 120K Lecture Notes The Manometer Consider a box of water 1m 3 . Its weight is 981N at 20 o C. What is the pressure at the bottom of the box? Does the width of the box affect the pressure at the bottom? at a depth of 1meter
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ASE 120K Lecture Notes Pressure = weight (or force) per unit area. NOTE: Pressure does not depend on the box shape. Pressure depends only on height, h .(hydrostatic paradox) Example: What is the depth of the water for the pressure to be 2300 Pa. (gage)?
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ASE 120K Lecture Notes U-Tube Manometer h P atm P atm level Dense liquid: H 2 O, Hg, alcohol P 1 P 2
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