Experimental Investigation on Heat Transfer Enhancements in Laminar Flow with Ferrofluids - Application to Power Electronics Cooling

Wahid Cherief (1) , Cong-Martin Wu (1) , Yvan Avenas (1) , Sébastien Ferrouillat (2) , Laurent Jossic (3) , Afef Kedous-Lebouc (1) , Jean Bérard (1) , Mickaël Petit (4)

1 G2ELab - Laboratoire de Génie Electrique de Grenoble
2 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]
3 LR - Laboratoire de rhéologie
4 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie

This paper presents an experimental investigation on forced convective heat transfers in a ferrofluid with the presence of a magnetic field. The duct is square, the flow is laminar and the wall heat flux is uniform. The effects of the direction of the magnetic field and of the thermal entrance region are studied. The results show that a better enhancement is made when the magnetic field and the heat flux are perpendicular. Moreover, the effect of the magnetic field seems to be more interesting for a fully developed flow. In the end of the paper, the thermal characterization of a 3D power electronics module cooled by the same ferrofluid is carried out.

Domaines: Energie électrique

Wahid Cherief, Cong-Martin Wu, Yvan Avenas, Sébastien Ferrouillat, Laurent Jossic, et al.. Experimental Investigation on Heat Transfer Enhancements in Laminar Flow with Ferrofluids - Application to Power Electronics Cooling. 20th International Workshop (Therminic 2014). Thermal investigations of IC'S and systems, Sep 2014, Londres, United Kingdom. ⟨10.1109/THERMINIC.2014.6972499⟩. ⟨hal-01069580⟩