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R. Kumar and N.R. Kuloor Studies in Bubble Formation I IV.pdf


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Contents
1 Studies in bubble formation I. Bubble formation
conditions
1.1 INTRODUCTION . . . . . . . . . . . . . . .
1.2 DEVELOPMENT OF THE MODEL . . . .
1.3 Evaluation of VE . . . . . . . . . . . . . . . .
1.4 Consideration of the second stage . . . . .
1.5 EXPERIMENTAL SET-UP . . . . . . . . . .
1.6 RESULTS AND DISCUSSION . . . . . . . .
1.6.1 Effect of surface tension . . . . . . .
1.6.2 Effect of viscosity . . . . . . . . . . .
1.6.3 Effect of density . . . . . . . . . . . .
1.7 NOTATION . . . . . . . . . . . . . . . . . .

under constant flow
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2 Studies in bubble formation II. Bubble formation under constant
pressure conditions
2.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 EXPERIMENTAL METHOD . . . . . . . . . . . . . . . . . . . . . .
2.3 PRESENT MODEL . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Evaluation of first stage bubble volume VE . . . . . . . . . . . . .
2.4.1 Evaluation of the final bubble volume VF . . . . . . . . . .
2.5 RESULTS AND DISCUSSION . . . . . . . . . . . . . . . . . . . . .
2.5.1 Surface tension . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.2 Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.3 Flow rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.4 Orifice diameter . . . . . . . . . . . . . . . . . . . . . . . .
2.6 NOTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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3 Studies in bubble formation III. Bubble formation in the intermediate
region between constant pressure and constant flow conditions
3.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 GENERAL EQUATION FOR THE FIRST STAGE . . . . . . . . .
3.3 GENERAL EQUATION FOR THE SECOND STAGE . . . . . . .
3.4 EXPERIMENTAL SET-UP AND PROCEDURE . . . . . . . . . . .

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