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Some students want to visualize flow over a spinning baseball. Their fluids laboratory has a nice water tunnel into which

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Some students want to visualize flow over a spinning baseball. Their fluids laboratory has a nice water tunnel into which they can inject multicolored dye streaklines, so they decide to test a spinning baseball in the water tunnel (Fig. P7–45E). Similarity requires that they match both the Rey n olds number and the Strouhal number between their model test and the actual baseball that moves through the air at 85 mi/h and spins at 320 rpm. Both the air and the water are at 68°F. At what speed should they run the water in the water tunnel, and at what rpm should they spin their baseball?


FIGURE P7–45E

Transcribed Image Text:

V P, μ Water tunnel test section Spinning baseball Dye injection Shield n Strut - Motor

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Related Book For  answer-question
Fluid Mechanics Fundamentals And Applications

Fluid Mechanics Fundamentals And Applications

ISBN: 9780073380322

3rd Edition

Authors: Yunus Cengel, John Cimbala

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Question Details
Chapter # 7- DIMENSIONAL ANALYSIS AND MODELING
Section: Problems
Problem: 45
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Question Posted: September 16, 2023 00:01:23
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