Heat transfer enhancement with actuation of magnetic nanoparticles suspended in a base fluid

Muhsincan Sesen, Yiǧit Tekşen, Kürşat Şendur, M. Pinar Mengüç, Hande Öztürk, H. F. Yaǧc Acar, Ali Koşar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


In this study, we have experimentally demonstrated that heat transfer can be substantially increased by actuating magnetic nanoparticles inside a nanofluid. In order to materialize this, we have utilized a miniature heat transfer enhancement system based on the actuation of magnetic nanoparticles dispersed in a base fluid (water). This compact system consists of a pool filled with a nanofluid containing ferromagnetic nanoparticles, a heater, and two magnetic stirrers. The ferromagnetic particles within the pool were actuated with the magnetic stirrers. Single-phase heat transfer characteristics of the system were investigated at various fixed heat fluxes and were compared to those of stationary nanofluid (without magnetic stirring). The heat transfer enhancement realized by the circulation of ferromagnetic nanoparticles dispersed in a nanofluid was studied using the experimental setup. The temperatures were recorded from the readings of thin thermocouples, which were integrated to the heater surface. The surface temperatures were monitored against the input heat flux and data were processed to compare the heat transfer results of the configuration with magnetic stirrers to the heat transfer of the configuration without the magnetic stirrers.

Original languageEnglish
Article number064320
JournalJournal of Applied Physics
Issue number6
Publication statusPublished - Sept 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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