Optical measurement of high-temperature melt flow rate

Bizjan, Benjamin (author), Širok, Brane (author), Chen, Jinpeng (author)

This paper presents an optical method and system for contactless measurement of the mass flow rate of melts by digital cameras. The proposed method is based on reconstruction of melt stream geometry and flow velocity calculation by cross correlation, and is very cost-effective due its modest hardware requirements. Using a laboratory test rig with a small inductive melting pot and reference mass flow rate measurement by weighing, the proposed method was demonstrated to have an excellent dynamic response (0.1 s order of magnitude) while producing deviations from the reference of about 5% in the steady-state flow regime. Similar results were obtained in an industrial stone wool production line for two repeated measurements. Our method was tested in a wide range of melt flow rates (0.05-1.2 kg/s) and did not require very fast cameras (120 frames per second would be sufficient for most industrial applications).

• Language: English
• Keywords: optical measurements, mass flow rate, melt, cameras, digital image processing, motion estimation and optical flow, velocimetry, surface dynamics, flow diagnostics
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Author Accepted Manuscript
• Year: 2018
• Number of pages: Str. 4202-4210
• Numbering: Vol. 57, iss. 15
• PID: 20.500.12556/RUL-126686
• UDC: 535(045)
• ISSN on article: 1559-128X
• DOI: 10.1364/AO.57.004202
• COBISS.SI-ID: 16345371
• Publication date in RUL: 04.05.2021

Record is a part of a journal

• Title: Applied optics
• Publisher: Optical Society of America
• ISSN: 1559-128X
• COBISS.SI-ID: 35949061

Secondary language

• Language: Slovenian
• Keywords: optične meritve, masni pretok, taline

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: Z7-8271
• Name: Izboljšanje procesa razvlaknjenja mineralne volne

• Funder: Other - Other funder or multiple funders
• Funding programme: Abelium d.o.o.