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Lasers are high-intensity beams that typically have a very pure frequency or wavelength. They come in sizes ranging from approximately one-tenth the diameter of a human hair to that of a very large. There are many applications of lasers which benefit from a uniform optical intensity distribution. Laser Beam is also a thermal process which includes the visible range of the electromagnetic spectrum. According to pilot study Huygens ’ principle, we can approximate a particular wave front by assuming every point on it is a point source of light from a single slit diffraction. In this work, we based on the alternating distribution of the maximum intensity for the central zone and minimum for the secondary zones which allows us to control the dynamic and thermal field by the law of Wien. The idea is to combine the propagation of electromagnetic waves of light and the natural convection of fluids. The CFD software is used as a technique to modelling the behaviour of fluid and the thermal convection with different Rayleigh numbers. .The results are presented in the form of distributions of the isotherms, the streamlines, local and average Nusselt .Thus these two processes are often classified as electro-optical-thermal processes.

mechanika

Control And Numerical Simulation of Natural Convection Benchmark Type In A Cavity Heated By Laser Beam Technique Emitted From A Single Slit Diffraction