# hw_6 - Comment Assume the submarine is running in deep...

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Problem Set #6 ME 152B Winter, 2009 Due Friday March 6th at 5pm Reading: Munson, et al, Chapter 10, Sections 10.4, 10.6; Chapter 7, Sections 7.8; Chapter 3, Sections 3.2, 3.3, 3.4, 3.6, Example 3.16. This is a long but not particularly difficult problem set. Start early!!! Problem 1. Work Problem 10.7. The problem requires an explanation, but make it as quantitative as possible. Problem 2. Work Problem 10.9. Then answer the following questions: (i) Is this a ‘shallow water’ or a ‘deep water’ problem? Explain. (ii) Comment on the speed you obtain vis-à-vis the requirements of an ‘early warning’ system for tsunamis. Problem 3. Work Problem 10.76. Problem 4. Work Problem 10.105. Comment: Using fluid mechanics principles to test ‘amazing stories’. (with apologies for the non-SI units.) Problem 5 . Work Problems 7.30, 7.31 and hand them in as a single problem. Assume inviscid flow, i.e. do not include viscosity in your variable list. Problem 6. Work Problem 7.34.
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Unformatted text preview: Comment: Assume the submarine is running in deep water, i.e. it is deep enough not to cause any surface waves, etc. In other words, treat it as flow around a completely submerged object. Problem 7. Work Problem 7.47. Comment: A good example of the power of dimensional analysis and modeling to get information on a very complicated problem. Problem 8. Work Problem 7.63 . Note: This is another ‘dagger’ problem. In working it, make some order of magnitude estimates of the size of an oil tanker and the wind velocities and wave heights on Goleta Beach. Assume that your fluids professor has thrown his weight around and obtained permission to use ¼ of the floor space in one of the labs in Engineering II. You’ll need fans to model the wind and a water tank with a sloping beach to model the ocean flow. There will be Reynolds and Froude numbers galore! Examine the ability to model this situation by making quantitative estimates: in other words, put some numbers to it....
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