Development and Optimization of a Micro-Baffle for the Enhancement of Heat Transfer in Film Boiling

Onur Muhammed Sarikaya, Mustafa Kuzay, Sibel Yilmaz and Ender Demirel ()
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Onur Muhammed Sarikaya: Design and Simulation Technologies Inc., 26480 Eskisehir, Türkiye
Mustafa Kuzay: Design and Simulation Technologies Inc., 26480 Eskisehir, Türkiye
Sibel Yilmaz: Design and Simulation Technologies Inc., 26480 Eskisehir, Türkiye
Ender Demirel: Design and Simulation Technologies Inc., 26480 Eskisehir, Türkiye

Energies, 2024, vol. 17, issue 20, 1-15

Abstract: This study represents the development and optimization of a micro-baffle design to enhance heat transfer in film boiling. Numerical simulations are performed using an open-source computational fluid dynamics (CFD) model, which incorporates the Lee model for momentum source associated with the phase change, and the Volume of Fluid (VOF) method to capture bubble dynamics. A comparison of the numerical results with the previous numerical and experimental data confirmed the validity of the numerical model. The influence of key design parameters was systematically investigated. The results revealed that a vertical baffle provided the maximum performance. The optimal baffle design achieved a 57.4% improvement in the Nusselt number and a 66.4% increase in critical heat flux (CHF). Furthermore, the proposed design facilitated continuous bubble formation, even with a reduced temperature difference between the heated surface and the subcooled liquid, which is crucial for energy-efficient thermal management in engineering systems. Ultimately, this study demonstrates the potential of micro-baffle designs in controlling bubble dynamics and improving heat transfer in film boiling, thereby aiding the design of efficient thermal systems.

Keywords: film boiling; heat transfer enhancement; micro-baffle design; CFD; bubble dynamics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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