Fractal heat transfer device

A heatsink configured to transfer heat from a heat source to a surrounding heat exchange medium, comprising:

• an interface, configured to receive heat from the heat source into a heat transmissive body from the heat source;
• the heat transmissive body being configured to conduct heat from the interface;
• and
• a plurality of heat exchange elements, each having respective geometric features having different sizes and different locations defined by a recursive relationship, extending from the heat transmissive body into the surrounding heat exchange medium, configured to transfer the conducted heat to the surrounding heat exchange medium;
• wherein each heat exchange element has respective geometric features defined by the recursive relationship, configured to:
• interact with the forced flow in the surrounding heat exchange medium to create pockets of separated flow of the surrounding heat exchange medium, and
• generate self-sustaining oscillations of the forced flow of the surrounding heat exchange medium from the pockets of separated flow over a range of different resonant acoustic frequencies associated with the different sizes and different locations.

A heatsink configured to transfer heat from a heat source to a surrounding heat exchange medium, comprising:

• an interface, configured to receive heat into a heat transmissive body from the heat source, the heat transmissive body receiving heat from the interface;
• the surrounding heat exchange medium;
• and
• a plurality of branched non-uniform heatsink surfaces, having a range of different dimensions, extending from the heat transmissive body into the surrounding heat exchange medium, and having non-uniform localized geometric features;
• the plurality of branched non-uniform heatsink surfaces being configured to interact with a forced flow of the surrounding heat exchange medium to create distinct regions of separated flow of the surrounding heat exchange medium, and to generate self-sustaining oscillations of the surrounding heat exchange medium over a range of acoustic frequencies dependent on the forced flow of the surrounding heat exchange medium and the non-uniform localized geometric features,
• wherein the non-uniform localized geometric features of the plurality of branched non-uniform heatsink surfaces comprise manufactured non-uniform localized geometric features have a fractal geometry relationship defined by at least three iterations of a fractal generative algorithm.