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Unformatted text preview: Q = A 1 V 1 V 2 V 2 F = mg Q = A 1 V 1 V 2 V 2 F = mg CE 321 Lab # 4 Momentum Flux Make sure you write down anything you see during the experiment that may help you answer the questions asked in the memo. Experiment Theory: How do forces exerted by a liquid jet impacting targets of different shapes behave? Determine forces: We will be using the following equation derived for horizontal jets: ) cos 1 ( 2 - = A Q F (1) This equation is derived from Newtons 2 nd law of motion, Bernoulli, and the continuity equation. To investigate the interaction between reactive forces and directional changes in momentum flux we use the momentum apparatus: 1/4 CE 321 Lab # 4 F = Reactive vertical force on the target = mg Q = discharge from the jet = V/t A = area of the jet = D 2 /4 = angle of the exiting jet = 90, 120, 180 (converted to radians) Assumptions 1. the pressure external to the fluid jet is everywhere constant so that the pressure in the fluid as it moves over the deflector is constant...
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- Spring '05