Vakuumsko sesane filamentov z Lavalovo šobo

Tomše, Aljaž (author), Prezelj, Jurij (mentor)

V Lavalovi šobi želimo s pomočjo vakuumske črpalke ustvariti nadzvočni tok, katerega udarni val vpliva na filament in omogoči, da se le ta pravilno prereže ob navijanju. S pravilno oblikovano šobo in dovolj velikim podtlakom lahko dosežemo nadzvočne hitrosti in udarne valove, kar je bilo dokazano s CFD simulacijo toka fluida čez Lavalovo šobo.

• Language: Slovenian
• Keywords: filamenti, Lavalova šoba, sesanje, podtlak, vakuum, simulacije, CFD
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [A.Tomše]
• Year: 2020
• Number of pages: XV, 44 f.
• PID: 20.500.12556/RUL-119609
• UDC: 62-225:678:621.52(043.2)
• COBISS.SI-ID: 30884611
• Publication date in RUL: 10.09.2020

Secondary language

• Language: English
• Title: Vacuum suction of filaments using Laval nazzle

Abstract

We want to create a sonic flow in Laval nozlle with vacuum. Shock wave caused by the sonic flow is affecting the filament and thus enabling a clean cut at the beginning of winding. With correctly designed shape of the nozzle and great enough vacuum we can achieve a sonic flow and shock waves, which was proofed with CFD simulation of fluid through Laval nozzle.

• Keywords: filaments, Laval nozzle, suction, negative pressure, vacuum, simulation, CFD