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Direct numerical simulation of a tra...

Ye, Tao.

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Direct numerical simulation of a translating vapor bubble with phase change.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Direct numerical simulation of a translating vapor bubble with phase change./
Author:	Ye, Tao.
Description:	153 p.
Notes:	Chair: Jacob N. Chung.
Contained By:	Dissertation Abstracts International62-03B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3009984
ISBN:	0493200290

Direct numerical simulation of a translating vapor bubble with phase change.
Ye, Tao.

Direct numerical simulation of a translating vapor bubble with phase change. - 153 p.

Chair: Jacob N. Chung.

Thesis (Ph.D.)--University of Florida, 2001.

For the isothermal cases, the predictions of drag coefficients and the shape deformation of bubbles for Reynolds numbers ranging from 2 to 100 and Weber numbers from 2 to 20 were shown independently to agree with previous published results.

ISBN: 0493200290Subjects--Topical Terms:

1018410
Applied Mechanics.

Direct numerical simulation of a translating vapor bubble with phase change.
LDR:02813nam 2200337 a 45 001 935963
005 20110510
008 110510s2001 eng d
020 $a 0493200290
035 $a (UnM)AAI3009984
035 $a AAI3009984
040 $a UnM $c UnM
100 1 $a Ye, Tao. $3 1259663
245 1 0 $a Direct numerical simulation of a translating vapor bubble with phase change.
300 $a 153 p.
500 $a Chair: Jacob N. Chung.
500 $a Source: Dissertation Abstracts International, Volume: 62-03, Section: B, page: 1549.
502 $a Thesis (Ph.D.)--University of Florida, 2001.
520 $a For the isothermal cases, the predictions of drag coefficients and the shape deformation of bubbles for Reynolds numbers ranging from 2 to 100 and Weber numbers from 2 to 20 were shown independently to agree with previous published results.
520 $a It was also demonstrated that the current method is capable of predicting accurate results for a wide range of <italic>Re, We, Ja, Pe</italic> numbers and property jumps at the interface.
520 $a A fixed-grid direct numerical simulation method has been developed and verified for single bubble dynamics, heat transfer and phase change phenomena. The original contribution of this research is the first introduction of a sharp interface between the vapor and liquid phases, which allows the simulation of density ratios up to the order of 1000. The interface location is obtained as part of the solution which accounts for all coupled dynamic and thermal effects.
520 $a The current method is believed to be the only method available at present which resolves the curvature calculation issue, treats the interface as a sharp discontinuity, honors the mass conservation principle, is capable of handling the large property ratios and phase change.
520 $a For a stationary and growing bubble, the predicted growth rate was found to agree with the theoretical limit of &prop; <italic>t</italic><super>1/2 </super>. However, for a rising and growing bubble, the predicted growth rate was approaching the theoretical limit of &prop; <italic>t</italic><super> 2/3</super> for a spherical bubble but did not reach it exactly owing to bubble deformation.
520 $a The empirical correlation proposed for bubble collapse is assessed by the simulations in the present work. The present numerical model predicts that the dynamics of a collapsing bubble is qualitatively, but not quantitatively similar to the empirical correlation proposed by other investigators.
590 $a School code: 0070.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0346
690 $a 0548
710 2 0 $a University of Florida. $3 718949
773 0 $t Dissertation Abstracts International $g 62-03B.
790 $a 0070
790 1 0 $a Chung, Jacob N., $e advisor
791 $a Ph.D.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3009984