Proceedings of the COMSOL Conference 2010 Boston
Using COMSOL Multiphysics 3.5a, thermomagnetic siphoning (TMS) was shown to be a sufficient manner of regulating the temperature of a bundle of current-carrying wires wrapped with a magnetorheological fluid (MRF) jacket. As the bundle heated up, cooler MRF on the outside of the jacket was drawn towards the center due to Curie’s Law and the induced magnetic field. The process convected heat from the bundle as the MRF warmed up and was pushed out towards an isothermal jacket wall. Assuming an outer jacket diameter of 6 mm and a bundle diameter of 1 mm, COMSOL’s Fluid Flow, Heat Transfer, and Magnetostatics modules showed a significant reduction in the steady-state bundle temperature. The passive thermal management technique would be beneficial in computer or space applications where temperature regulation is a concern, but actual fabrication would be difficult.
Boulware, Jeffrey C. and Jensen, Scott, "Thermomagnetic Siphoning on a Bundle of Current-Carrying Wires" (2010). Space Dynamics Lab Publications. Paper 20.