Akademik Veri Yönetim Sistemi
2 nd International Congress on Trends and Advances in Global Research and Applications (TAGRA 2025), Erzurum, Türkiye, 13 - 14 Aralık 2025, ss.209-215, (Tam Metin Bildiri)
Effective thermal management is crucial for improving the performance and reliability of electronic devices with increasing power densities. In this study, a novel modification approach was proposed by introducing cylindrical mini-channels along the flow direction of block graphite foam material. For comparison, an aluminum heat sink with the same mini-channel configuration was also developed, as aluminum is commonly used in heat transfer applications. Both heat sinks with a mini-channel diameter of 2 mm were numerically investigated. Subsequently, parametric studies were conducted within a Reynolds number (Re) range of 163–1862 using COMSOL Multiphysics by varying the the number of channels (41, 50, and 59). The influence of these parameters on the Nusselt number (Nu), pressure drop (ΔP), and thermal performance factor (η) were systematically evaluated. The results indicate that Nu and ΔP increase with Re for both heat sinks. Increasing the number of channels improves Nu without causing a significant rise in ΔP, resulting in a moderate increase in η. A comparison between aluminum and graphite foam heat sinks reveals that, although the porous structure of graphite foam ensures consistently lower ΔP, Nu values remain comparable due to the balance between its high specific surface area and the high thermal conductivity of aluminum with added surface area from mini-channels.