Numerical modelling of radiant energy extinction by water medium containing bubbles and particles of various natures

International Conference on Information Technologies in Business and Industry 2016

计算机科学;经济学;工业技术

Shefer, O.V.^1 ; Loskutov, V.V.^1

Tomsk Polytechnic University, 30, Lenina ave., Tomsk

634050, Russia^1

关键词: Chemical compositions;    Complex index of refraction;    Extinction characteristics;    Extinction coefficients;    Extinction efficiency;    Numerical experiments;    Transmission function;    Visible wavelengths;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/803/1/012144/pdf
DOI  :  10.1088/1742-6596/803/1/012144

来源: IOP

【 摘 要 】

In the framework of the Mie theory, we developed a numerical model of weakly absorbing medium, containing particles having an arbitrary chemical composition. This model can be applied to the study of the extinction characteristics of the optical radiation by a water layer with gas bubbles or volume-shape particles. The results of the numerical experiment illustrate changes in optical properties of the water due to the presence of bubbles or solid particles. The work displays some calculations of the extinction efficiency factor, the extinction coefficient, and transmission function at visible wavelengths. The influences of concentration and sizes of gas bubbles on the extinction characteristics of optical radiation are illustrated. Features of the extinction of radiant energy are discussed as dependent on a size parameter and a complex index of refraction of scatterers.