20.500.12556/RUL-116198 Analogue experimental study of fiber formation on two-wheel spinner Analogna eksperimentalna študija tvorbe vlaken na dvokolesni centrifugi In this paper, the process of mineral fiber formation was investigated experimentally on a two-wheel spinner by means of high-speed imaging. Analogue isomalt melt was fiberized at different rotational speeds of spinner wheels, melt flow rates and impingement positions so that the fiberization process was dynamically similar to an industrial mineral wool production process. Images of fiber formation and transport reveal highly complex dynamics of these processes, as fibers mostly occur in form of 3D mutually intertwined structures such as clusters, strands and veils periodically shedding from the melt film. Despite the complexity of flow structures, there is a clear trend of increasing mean fiber length and expansion angle of the coaxial fiber-laden flow as the Weber number and the ratio of melt film velocity to blowing air velocity are increased. The fiberization efficiency (ratio of fiber mass deposited on the collecting mesh to the mass of melt poured) is affected by the impingement position and flow rate of melt as well as the Weber number of melt film. The optimum efficiency was attained at 30° (1 o'clock) impingement position and the ratio of melt film to blowing air flow velocity close to unity. spinners fiber formation mineral wool multiphase flow primary layer high-speed imaging centrifuge razvlaknjenje mineralna volna večfazni tok primarna plast hitre kamere true false true Angleški jezik Slovenski jezik Neznano 2020-05-22 08:48:52 2020-05-22 08:48:56 2022-08-28 03:47:37 0000-00-00 00:00:00 2020 0 0 Str. 279-288 iss. 5 Vol. 66 May 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.8:621.928.3(045) 0039-2480 10.5545/sv-jme.2020.6557 16312323 762116 RAZ_Bizjan_Benjamin_2020.pdf RAZ_Bizjan_Benjamin_2020.pdf 1 CFBD0CAA13E65DD26A78D8B26AE703F4 d4a08083dafb5917fb017f2a82d3185a5143fdaf9fe571bec9752defe0938457 d5d74725-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=129614 https://www.sv-jme.eu/sl/article/analogue-experimental-study-of-fiber-formation-on-two-wheel-spinner/ 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=129613 Fakulteta za strojništvo Strojniški vestnik 0 0 0