Synchronized velocity and temperature measurements in nanofluids pool boiling experiments
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This present study seeks to contribute to the continuing investigation of the effects of nanofluids upon the heat transfer properties of fluids. Experiments seek to investigate the physical phenomena present in the heat transfer processes of pool boiling, involving both pure water and water based nanofluids. In this work, point temperature and full velocity field measurements are presented in a pool boiling experiment. State-of-the-art particle image velocimetry (PIV) is used in experiments involving pure water and nanofluids. Specifically, results of nanofluids' effect upon nucleate boiling heat transfer and critical heat flux are investigated. These heat transfer regimes are of particular interest in the engineering of solutions to heat transfer in nuclear application. It is the ultimate goal of this project to evaluate the potential applications of nanofluids in pressurized water reactors. The results of this investigation showed a change in the hydrodynamic behavior of bubbles when nanoparticles were introduced. The measured velocity fields showed a different fluid behavior for the various cases investigated which in turn elucidates the complexity of the fluid flow in the pool boiling experiment. The results show a direct correlation between wall temperature and nanofluid concentration.
author list (cited authors)
Dominguez-Ontiveros, E. E., Fortenberry, S., Estrada-Perez, C. E., & Hassan, Y. A.