Communication Dans Un Congrès Année : 2025

Nucleation barrier effect on pulsating heat pipe performance

Résumé

Despite their utility, a comprehensive understanding of the internal flow and heat transfer mechanisms within Pulsating Heat Pipes (PHPs) remains challenging. With the objective of clarifying the role of internal tube surface state on PHP performance, this study aims to evaluate the influence of the nucleation barrier using CASCO (Code Avancé de Simulation du Caloduc Oscillant: Advanced PHP Simulation Code in French). Numerical findings show that the nucleation barrier has minimal influence on PHP thermal resistance at high heating powers, whereas at lower heating powers, an increase in the nucleation barrier results in decreased PHP thermal resistance. Experimental data from a horizontal 16-turn copper tube PHP prototype filled with HFE-7100 fluid are compared with simulation performed under zero-gravity conditions.

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Dates et versions

hal-05076015 , version 1 (20-05-2025)

Identifiants

  • HAL Id : hal-05076015 , version 1

Citer

Slaven Bajić, Guillaume Boudier, Eric Blondé, Typhaine Coquard, Vadim Nikolayev. Nucleation barrier effect on pulsating heat pipe performance. 12th International Conference on Multiphase Flow (ICMF 2025), May 2025, Toulouse, France. ⟨hal-05076015⟩
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