# Fluid Flow & Pressure Demo.pdf - Page 1 of 6 CETG 1001...

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Page 1 of 6 CETG 1001 – Environmental Science & Materials Fluid Pressure and Fluid Flow Demonstration Use the following website to complete this assignment. Click “Play” to run from the website or download the simulation to your personal computer. PART 1 – GAUGE, ABSOLUTE, and ATMOSPHERIC PRESSURE Definitions: Atmospheric Pressure – The pressure exerted by the weight of the column of air in the atmosphere of the earth. Gauge Pressure – Most pressure measuring devices are calibrated to read zero in the atmosphere and so they indicate the difference between the absolute pressure and the local atmospheric pressure. This difference is called gage pressure. Absolute Pressure – The actual pressure at a given position and it measured relative to absolute vacuum (zero pressure).
Page 2 of 6 Setup the simulation: Select the PRESSURE tab. In the top right hand corner, select the GRID box. Using the sliding knob on the faucet, fill the pool so that there the water is 3 meters deep. Set FLUID DENSITY to 1000 kg/m 3 and GRAVITY to 9.8 m/s 2 . Click and drag the pressure meter to ground level and determine the pressure at the ground. Record this value: P atm = _________________ Pa

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