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논문 기본 정보

자료유형
학술대회자료
저자정보
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대한기계학회 대한기계학회 춘추학술대회 대한기계학회 창립 60주년 기념 춘계학술대회 강연 및 논문 초록집
발행연도
2005.5
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2,057 - 2,062 (6page)

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초록· 키워드

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Sonoluminescence phenomenon, the light emission from the collapsing bubble under the acoustic radiation field, is investigated in the present paper to quantify the interfacial heat transfer through the bubble wall. The fact that no direct measurements of the thermal properties in the micro bubble stimulated the necessary of the rigorous mathematical model on this phenomenon. Two models for the bubble dynamics and three models for the thermal boundary layer are studied to investigate their effect on the estimation of the thermodynamics of the oscillating bubble. For the bubble dynamics the modified Rayleigh-Plesset equation and the Keller-Miksis equation were adopted and for the thermal biundary layer, the conventional adiabatic model, the dynamics boundary layer model of Kwak et al., and the penetration depth model of Lee were used to evaluate their performance. Evaluation of models was performed using three sets of data including sonoluminescence case and non sonoluminescence case. It was found that the difference between the bubbly dynamics models were hardly to distinguish but the results were highly affected by the models for the thermal boundary layer. The highest gas temperature was obtained by the dynamics thermal boundary layer model, but highest gas pressure was estimated by the adiabatic model. The penetration depth model estimate gas temperature conservatively, but it showed a good agreement of the bubble dynamics with the experimental data.

목차

abstract
1. Introduction
2. Bubble dynamic Model
3. Thermal Boundary Layer model and Equation of State
4. Results and Discussions
5. Conclusions
ACKNOWLEDGEMENT
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2009-550-016055103