Numerical Investigation of Thermal-flow Characteristics of Heat Sinks with Lattice Structures and Pin Fins
Notice bibliographique
Résumé
There is a growing demand for compact advanced thermal management systems to effectively dissipate heat generated by high-power technologies.Traditional cooling methods are often inadequate in meeting the increasingly severe thermal management requirements [1].Therefore, novel approaches such as additive manufacturing have attracted considerable attention due to their potential to overcome the limitations of fabricating complex structures [2].Additive manufacturing enables the creation of novel, compact structures with greater surface-to-volume ratios and geometries than standard pin/fin arrays.We propose special architected heat sinks suitable for additive manufacturing techniques, particularly triply periodic minimal surface (TPMS), and investigate their performance using the computational fluid dynamics (CFD) approach.This research presents a comprehensive numerical investigation into the thermal-flow characteristics of heat sinks featuring lattice structures and pin fins.The primary objective is to enhance the efficiency of thermal management systems crucial for various engineering applications, including electronic equipment.Specifically, our focus extends to high-temperature systems such as those in aerospace and aeronautics.Triply periodic minimal surfaces (TPMS) have demonstrated superior mechanical performance, mass transfer, and thermal conductivity compared to traditional structures employed across various fields.Despite this, there has been limited research into using TPMS in microchannel heat sinks [3].In this study, using COMSOL Multiphysics software, various heat sinks with different lattice structures and their integration via pin-fins are compared with conventional pin-fin heat sinks.This heat sink consists of a rectangular cooling channel with architected structures heated with constant heat flux.Different parameters, including Reynolds number, coolant type, geometric configurations of lattice structures, and pin-fin arrangements, are investigated to examine their effects on heat transfer enhancement, flow behavior, and pressure drop.The results revealed that TPMS characteristics such as porosity, wall thickness, and unit size notably affect the flow patterns and heat transfer behavior.Moreover, a comparative analysis between TPMS and conventional heat sinks highlighted that most TPMS configurations exhibit superior thermal efficiency compared to traditional methods while imposing a moderate increase in pressure drop.TPMS structures disrupt the flow patterns, promoting turbulence and enhancing convective heat transfer rates.Furthermore, optimizing geometric parameters like lattice cell size, pin-fin height, and density maximized thermal performance while minimizing pressure drop.Overall, the study demonstrated the capability of additive manufacturing in building complex geometries, which can improve thermal management systems across various industries.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».