3047 KB0 KB199920252022Ramšak, Matjažletnik:68številka:9str. 517-528ISSN:0039-2480DOI:10.5545/sv-jme.2022.28COBISSID_HOST:124223491URN:URN:NBN:SI:doc-ZA9YMM1BenZveza strojnih inženirjev in tehnikov Slovenije etc.Strojniški vestnikboundary element methodconjugate heat transferCPU coolingCPU hlajenjefractal heat sinkfraktalno hladilno teloKoch snowflakeKochova snežinkakonjugirani prenos toplotelaminar flowlaminarni tokLED coolingLED hlajenjemetoda robnih elementovFractal geometry as an effective heat sink|"How long is the coast of Britain?" was the question stated by Mandelbrot. Using smaller and smaller rulers the coast length limits to infinity. If this logic is applied to the fractal heat sink geometry, infinite cooling capacity should be obtained using fractals with mathematically infinite surface area. The aim of this article is to check this idea using Richardson extrapolation of numerical simulation results varying the fractal element length from one to zero. As expected, the extrapolated heat flux has a noninfinite limit. The presented fractal heat sink geometry is non-competitive to the straight finsTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo