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12th Spring School on Transition and Turbulence
NUMERICAL EVALUATION OF MULTIPHASE FLOW IN A PILOT-SCALE THERMOSIPHON: A PRELIMINARY VALIDATION STUDY
Bruna Iten Bittelbrunn , SP
Co-Authors: Bruna Iten Bittelbrunn, Harlley Henrique Parno, Roberto Fischer Junior, EDUARDO OLIVEIRA, Celso Murilo dos Santos, Wladir Pedro Martignoni, Henry França Meier, Jaci Carlo Schramm Câmara Bastos
Presenter: Bruna Iten Bittelbrunn
Thermosiphons, also known as natural circulation loops, are heat transfer devices in which the fluid flows due to temperature gradient, generating single-phase and multiphase flow. In this study, a simplification of a pilot-scale thermosiphon was numerically evaluated. Volume of Fluid (VOF) with Lee model for mass transfer and Euler-Euler with RPI model simulations were conducted. The results were compared with an experimental database obtained by Particle Image Velocimetry (PIV) measurements. The results showed a qualitative agreement with the use of RPI model. However, further research is still needed to obtain a quantitative validation.
Pilot-scale thermosiphon, Nucleate Boiling, multiphase flow