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Enhance Flow Boiling In Microchannels By Regulating Two-Phase Transport Patterns, Wenming Li
Enhance Flow Boiling In Microchannels By Regulating Two-Phase Transport Patterns, Wenming Li
Theses and Dissertations
Flow boiling in microchannels is one of the most promising cooling techniques for microelectronics. Using latent heat by vaporization can significantly improve heat dissipation of high power density electronic devices. Most of the failure of electronic devices is induced by the occurrence of critical heat flux (CHF), which defines the maximum operating conditions. However, the vigorous rapid generation of vapor through phase change leads to chaotic two-phase flows in microchannels, resulting in flowinstability in terms of severe flow, temperature and pressure drop fluctuations. Particularly, the very well-known bubble confinement exacerbates the two-phase flow instabilities and greatly deteriorates heat transfer performance …
Characterization Of Evaporation/Condensation During Pool Boiling And Flow Boiling, Mostafa Mobli
Characterization Of Evaporation/Condensation During Pool Boiling And Flow Boiling, Mostafa Mobli
Theses and Dissertations
Present dissertation has investigated pool and flow boiling and their characteristics via numerical means. A code was developed to investigate and enhance heat transfer performance during different modes of phase change phenomena. Multiphase heat transfer has proven to be one of the most effective means of heat transfer in different industries, therefore, there have been numerous experimental and numerical studies on the subject of phase change phenomena in a wide range of conditions and setups; yet there are complex bubble dynamics and heat transfer characteristics that remain unresolved. To have a more detailed look at and a better understanding of …