Indian Society for Heat and Mass Transfer

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Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)

ISSN: 2688-7231 (Online)

Numerical study on nucleate pool boiling in a container using volume of fluid multiphase model

C. R. Aniraj
Department of Mechanical Engineering, IIT Madras Chennai-600036, India

Shaligram Tiwari
Department of Mechanical Engineering, Indian Institute of Technology Madras Chennai, India, 600036

M. Prakash Maiya
Department of Mechanical Engineering Indian Institute of Technology Madras, Chennai, India - 600036

DOI: 10.1615/IHMTC-2017.2910
pages 2073-2079


Boiling is a phenomenon in which phase change occurs when temperature of liquid in contact with heated surface reaches its saturation temperature corresponding to the ambient pressure. In nucleate pool boiling, the liquid above heated surface is stagnant and bubbles form, grow and depart from the nucleation sites of the surface. Study of bubble dynamics becomes important in pool boiling heat transfer. Present research carries out three-dimensional numerical investigations to study nucleate pool boiling in a rectangular container using commercial software ANSYS Fluent 16.1 having built-in volume of fluid (VOF) multiphase model. In VOF model, volume fractions in each cell are recorded under the constraint that sum of volume fractions of liquid and vapor in each cell becomes unity. User defined function (UDF) has been written to model the vaporization process and is used to calculate mass and energy transfer between the phases during the process. The user-developed subroutines are linked to the main hydrodynamic model equations.

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