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Analogue experimental study of fiber formation on two-wheel spinner
ID Bizjan, Benjamin (Avtor), ID Širok, Brane (Avtor), ID Blagojevič, Marko (Avtor)

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Izvleček
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.

Jezik:Angleški jezik
Ključne besede:spinners, fiber formation, mineral wool, multiphase flow, primary layer, high-speed imaging
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2020
Št. strani:Str. 279-288
Številčenje:Vol. 66, iss. 5
PID:20.500.12556/RUL-116198 Povezava se odpre v novem oknu
UDK:519.8:621.928.3(045)
ISSN pri članku:0039-2480
DOI:10.5545/sv-jme.2020.6557 Povezava se odpre v novem oknu
COBISS.SI-ID:16312323 Povezava se odpre v novem oknu
Datum objave v RUL:22.05.2020
Število ogledov:956
Število prenosov:605
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Gradivo je del revije

Naslov:Strojniški vestnik
Skrajšan naslov:Stroj. vestn.
Založnik:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
ISSN:0039-2480
COBISS.SI-ID:762116 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Slovenski jezik
Naslov:Analogna eksperimentalna študija tvorbe vlaken na dvokolesni centrifugi
Ključne besede:centrifuge, razvlaknjenje, mineralna volna, večfazni tok, primarna plast, hitre kamere

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0401
Naslov:Energetsko strojništvo

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:Z7-8271
Naslov:Izboljšanje procesa razvlaknjenja mineralne volne

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