ANALYSIS OF CONVECTIVE HEAT TRANSFER ENHANCEMENT BY NANOFLUIDS: SINGLE-PHASE AND TWO-PHASE TREATMENTS

Nanofl uids have been investigated regarding their advantages and potentialities for the purpose of increasing convective heat transfer rates inside thermal systems where they are used as working fluids. Researchers in thermophysics have investigated these fluids experimentally and numerically. This review provides extensive theoretical information concerning nanofl uids in the single-phase and two-phase treatments. Important published works on nanofl uid properties and correlations are summarized and reviewed in detail. Heat transfer enhancement by nanofl uids is a challenging problem due to the diffi culties inherent in the model of the physical mechanism of interaction between the paricles. Here the interaction between the phases is modeled by several two-phase models, and the results are given in graphical and tabular forms. Despite the advantages of the mixture model, such as imlementation of physical properties and less computational power requirements, some studies showed that the results of the single-phase and two-phase models are very similar. The main difference consists in the effect of the drift velocities of the phases relative to each other
   
Author:  S. Kakaç and A. Pramuanjaroenkij
Keywords:  nanofl uids, heat transfer enhancement, convective heat transfer
Page:  758