Two Phase Flow and Thermal Physics of Nanofluids: Understanding the Fundamentals, Mechanisms and Challenges

Abstract

This keynote lecture presents a comprehensive review of the state-of-the-art research on nanofluid two phase flow and thermal physics. First, studies of the physical properties of nanofluids are summarized. Then, analysis of the available experimental studies on nucleate boiling and critical heat flux (CHF) is presented. Next, flow boiling and two phase flow of nanofluid in macroscale and microscale channels are discussed. Finally, analysis and discussion of the existing correlations and models with the relevant physical properties are presented. According to this comprehensive review, future research needs have been identified. So far, fundamentals of boiling heat transfer and CHF phenomena of nanofluids have not yet been well understood. Therefore, systematic accurate experiments and flow regime observations of boiling heat transfer and CHF phenomena with various types of nanofluids under a wide range of test conditions should be emphasized. Furthermore, physical mechanisms, theory and prediction methods for boiling heat transfer, two phase flow and CHF characteristics should be targeted at in the future. Practical application of nanofluid two phase flow and heat transfer should also be considered.