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CREEM2025
CREEM 2025 - XXXI Congresso Nacional de Estudantes de Engenharia Mecânica Congresso Nacional de Estudantes de Engenharia Mecânica
CARACTERÍSTICAS DO ESCOAMENTO MONOFÁSICO EM DIFERENTES CONFIGURAÇÕES DE DISSIPADORES DE CALOR
Submission Author:
Anna Cláudia Piai Groppo , Brazil
Co-Authors:
Ariany Moreira, Anna Cláudia Piai Groppo, Jeferson Diehl de Oliveira, Elaine Maria Cardoso
Presenter: Anna Cláudia Piai Groppo
doi://10.26678/ABCM.CREEM2025.CRE2025-0028
Abstract
This work presents an experimental analysis of single-phase flow in three distinct heat sink configurations: plain surface, aligned micro-pin fins, and open-cell copper metal foam. Experiments were carried out using deionized water as the working fluid under different mass flow rates and a constant heat flux of 50 kW/m². The results show that the metal foam exhibited the best thermal performance, achieving Nusselt numbers approximately 178% higher than the plain surface and 25% higher than the micro-pin fin geometry. Although the porous structure of the foam leads to a higher pressure drop, its enhanced thermal efficiency offsets the hydraulic penalty, resulting in the best overall thermal-hydraulic performance among the tested geometries. The micro-pin fins also demonstrated good heat transfer capability with moderate pressure losses, whereas the plain surface showed the lowest pressure drop but limited thermal performance. The experimental data provide valuable insights into the influence of geometry on heat sink efficiency and offer useful guidance for designing high-performance thermal management systems.
Keywords
micro heat sink, micro pin fins, open-cell metal foams, thermal-hydraulic behavior
