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Unformatted text preview: s1 . Consider timeaveraging at area A. 6. Appropriate t ? – the time between passages of group of 4 bubbles (or of single bubble) t ? = 6 cm 10 cm s1 = 0 . 6 s (19) An Example of Averaging Parameters 3 7. ˜ α at point d. In 0.6 s, 1 bubble passes through point d. It requires 0.1 s to pass (= 1 cm/ 10 cm/s ), so ˜ α is 0.167. 8. g { α } = { ˜ α } for the area A. By computing { α } at all z and the transforming z to t by considering the velocity, this could be solved analytically. However, there is only one type of coherent structure moving. As a result, a ﬁxed axial location will be exposed to the entire volume in time, so < α > = g { α } . That is, g { α } = 0 . 0485....
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This note was uploaded on 10/22/2011 for the course ENU 4134 taught by Professor Schubring during the Fall '11 term at University of Florida.
 Fall '11
 Schubring

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