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Numerical studies of gas and vapor b...

Hao, Yue.

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Numerical studies of gas and vapor bubble phenomena.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Numerical studies of gas and vapor bubble phenomena./
作者:	Hao, Yue.
面頁冊數:	234 p.
附註:	Source: Dissertation Abstracts International, Volume: 63-10, Section: B, page: 4861.
Contained By:	Dissertation Abstracts International63-10B.
標題:	Engineering, Mechanical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3068165
ISBN:	0493877169

Numerical studies of gas and vapor bubble phenomena.
Hao, Yue.

Numerical studies of gas and vapor bubble phenomena. - 234 p.

Source: Dissertation Abstracts International, Volume: 63-10, Section: B, page: 4861.

Thesis (Ph.D.)--The Johns Hopkins University, 2003.

This thesis is divided into three parts.

ISBN: 0493877169Subjects--Topical Terms:

783786
Engineering, Mechanical.

Numerical studies of gas and vapor bubble phenomena.
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245 1 0 $a Numerical studies of gas and vapor bubble phenomena.
300 $a 234 p.
500 $a Source: Dissertation Abstracts International, Volume: 63-10, Section: B, page: 4861.
500 $a Adviser: Andrea Prosperetti.
502 $a Thesis (Ph.D.)--The Johns Hopkins University, 2003.
520 $a This thesis is divided into three parts.
520 $a In the first part, spherical stability of gas bubble oscillations is investigated. An exact linear formulation for the study has been available for many years, but its complexity has discouraged a detailed investigation. This study presents a numerical method for the solution of the pertinent equations and compares the theory with the available experimental data. The coupling of the strong nonlinearity of the bubble radial oscillations with the parametric mechanism of the surface instability results in a very complex structure for the stability boundary. Nevertheless, a good agreement between theory and data is found. A comparison with earlier approximate models is also made.
520 $a The focus of the second part is on bubbles in "hot" liquids, in which the bubble contains mostly vapor, with little or no permanent gas. The topics covered include vapor bubble oscillation in sound fields, the effect of translation on condensation of vapor bubbles in a subcooled liquid, the action of pressure gradients on bubbles convected by a liquid flow, rectified heat transfer into stationary and moving bubbles, the effect of permanent gas on this phenomenon, and the action of pressure-radiation (or Bjerknes) forces.
520 $a In the third part, a new numerical method for multiphase flow computations is proposed based on finite-difference formulation with a fixed grid. This method is described as a hybrid of interface front-tracking, Ghost Fluid Method and a numerical technique for velocity extrapolation near the interface. Three-dimensional two-phase flow problems with an incompressible liquid and a compressible gas are solved with this method by treating the interface in a sharp fashion. Numerical results are compared with numerical solutions of the Rayleigh-Plesset equation for the free oscillation of a gas bubble, and independent front-tracking results for buoyant bubbles. Finally, the effects of an imposed sinusoidal liquid flow on a gas bubble are investigated.
590 $a School code: 0098.
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0548
710 2 0 $a The Johns Hopkins University. $3 1017431
773 0 $t Dissertation Abstracts International $g 63-10B.
790 1 0 $a Prosperetti, Andrea, $e advisor
790 $a 0098
791 $a Ph.D.
792 $a 2003
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