Title :
Heat spreading in a thin longitudinal fin
Author_Institution :
Philips Res. P&PM, Eindhoven, Netherlands
Abstract :
In view of the trend towards higher power densities in ever shrinking geometries, understanding heat spreading fundamentals is gaining in importance. In this paper heat spreading in thin longitudinal geometries is considered. This geometry is of practical interest in one-dimensional Cartesian geometries. A characteristic length is derived and it is shown that this is has physical significance for the distance that heat spreads, and for the total amount of heat cooled away. Furthermore, it is investigated when “thin” is a viable assumption. The use of the characteristic length is illustrated for the case of a line source cooling to a plate. The results are compared to numerical simulations. The work is an extension of the authors´ earlier work on heat spreading in infinite longitudinal geometries and heat spreading in infite and finite circular geometries.
Keywords :
cooling; heat sinks; plates (structures); heat spreading; infinite longitudinal geometry; line source cooling; one-dimensional Cartesian geometry; plate; thin longitudinal fin; thin longitudinal geometry; Cooling; Geometry; Heat transfer; Heating; Temperature distribution; Thermal resistance; Heat spreading; characteristic length; line source; plate heat sink; thin longitudinal fin;
Conference_Titel :
Thermal Investigations of ICs and Systems (THERMINIC), 2012 18th International Workshop on
Conference_Location :
Budapest
Print_ISBN :
978-1-4673-1882-2