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Unformatted text preview: Oceanographic instrument buoys should have long heave periods to avoid wave resonance. Sketch a possible long period heave buoy design. 4) An offshore riser can be modeled as a long rigid cylinder with diameter 0.25 meters. Determine the vortex shedding frequency for a current of 1.0 m/s. What is the frequency of the unsteady component of the lift force? The unsteady drag force? 5) An overhead power line is “humming” on a windy day. You are with a friend who has a very good ear and determines that the power line is vibrating at a frequency of 100 Hz. The wind is quite strong and is blowing at 8 m/s. Determine the diameter of the power line....
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This note was uploaded on 02/24/2012 for the course MECHANICAL 2.016 taught by Professor Alexandratechet during the Fall '05 term at MIT.
- Fall '05