서강대학교

목차

1 Introduction 1
1.1 Bubble generation and applications 1
1.1.1 Ultrasound-driven droplet vaporization 2
1.1.2 Electricity-driven hydrogen bubble generation 5
1.2 Objective of the thesis 7
2 Part 1: Ultrasound-driven droplet vaporization 9
2.1 Prediction of vaporization threshold of droplet 9
2.1.1 Numerical modelling using one-dimensional approach 9
2.1.2 Numerical analysis of bubble growth in a droplet 21
2.1.3 Effect of liquid compressibility on bubble growth 44
2.2 Ultrasound-driven droplet vaporization in a tube 63
2.2.1 Numerical modelling using interface tracking method 63
2.2.2 Effect of tube radius on ADV 67
2.2.3 One-dimensional approximation considering tube effect 76
3 Part 2: Electricity-driven hydrogen bubble generation 80
3.1 Numerical modelling using two-fluid model 80
3.2 Hydrogen bubble production in alkaline water electrolysis 88
3.3 Effect of current fluctuation on AWE efficiency 96
4 Conclusion 105
References 108