2012 Fiscal Year Final Research Report
Development of theory on phase change heat transfer in microchannel and application to high heat flux cooling system
| Project/Area Number |
23860007
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 電子機器冷却 / マイクロチャネル / 相変化伝熱 |
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| Research Abstract |
In order to achieve the high heat flux cooling for the electrical devices, the theoretical analysis of phase change heat transfer in microchannel and the investigation of the cooling system were conducted. By using the relationship of the liquid film thickness foamed in the single bubble flow in the tube, the condition which only evaporation occurs in the tube was analyzed. By introducing the analytical solution of the equation on the onset of heterogeneous nucleate boiling, the dimensionless form of the proposed analysis was presented. Additionally, the solver for the two-phase flow in microchannel was developed by using VOF method. The temperature and velocity field of single bubble flow in microchannel was solved and its cooling performance was evaluated.
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