Teoretična obravnava laserskega segrevanja

Cesar, Ožbej (author), Jezeršek, Matija (mentor)

V zaključni nalogi so predstavljene osnove delovanja laserjev, osnovne lastnosti laserske svetlobe in mehanizmi prenosa toplote. Diferencialno enačbo enodimenzionalnega časovno odvisnega prevoda toplote v trdnini smo preuredili v diferenčno obliko za reševanje po metodi končnih razlik z diferenčnim korakom naprej. Lasersko segrevanje jeklene plošče smo poenostavili na enodimenzionalen problem, pri čemer smo upoštevali prevod toplote, konvekcijo in sevanje. Na rezultatih simulacij 10-sekundnih segrevanj smo opazovali vpliv ohlajanja, laserske intenzitete in debeline plošče na časovni potek temperature pri segrevanju.

• Language: Slovenian
• Keywords: laserji, laserska svetloba, prenos toplote, lasersko segrevanje, metoda končnih razlik
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [O. Cesar]
• Year: 2023
• Number of pages: X, 32, [2] str.
• PID: 20.500.12556/RUL-149408
• UDC: 621.375.826:536.24:517.9(043.2)
• COBISS.SI-ID: 170873859
• Publication date in RUL: 07.09.2023

Secondary language

• Language: English
• Title: Theoretical examination of laser heating

Abstract

This work presents laser functioning fundamentals, basic characteristics of laser light and heat transfer mechanisms. We transformed the differential equation of one dimensional transient heat conduction within a solid medium in purpose of solving it with finite difference method. Simulating the heating of a steel plate, we considered heat conduction, convection and radiation. On the results of the 10-second heating simulations we observed the influence of cooling, laser intensity and plate thickness on the heating.

• Keywords: laser, laser light, heat transfer, laser heating, finite difference method