Compared to a single-phase cooling system, which uses the sensible heat of the coolant, a pool boiling cooling system can achieve a greater heat transfer coefficient by capitalizing on the latent heat of vaporization of the coolant. Nanofluids are known to provide the added benefit
of an increase in the heat transfer coefficient due to their high thermal conductivity. In order to simulate pool boiling with water-based nanofluids, a computational model is constructed using the volume of fluid (VOF) model in the FLUENT computational fluid dynamics code. The simulations
are performed with saturated pure water and water-Al2O3 nanofluids using a two-dimensional computational domain with a width of 5 cm and a height of 20 cm. An isothermal condition is applied to a vertical surface with a heated length of 2 cm which is exposed to the working
fluids, the surface temperature of which is 5 K, 10 K, 15 K and 20 K higher than the initial temperature of the working fluids. The numerical results are verified by comparing the experimental volume fraction data in the pool boiling. The fluid flow and heat transfer characteristics of pool
boiling are examined for different wall superheats and nanoparticle concentrations.
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Volume of Fluid (VOF) Model
Document Type: Research Article
School of Mechanical Engineering, Sungkyunkwan University, Suwon 400-746, Republic of Korea
Environmental and Plant Engineering Research Institute, Korea Institute of Construction Technology, Goyang 411-712, Republic of Korea
Publication date: 2017-11-01
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Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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