文章基本信息

标题：Computer modeling of water cleaning in wetland taking into account of suffosion ang colmatation
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作者：Viktor Moshynskyi ; Victor Filipchuk ; Natalia Ivanchuk 等
期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2018
卷号：1
期号：10
页码：38-43
DOI：10.15587/1729-4061.2018.123455
语种：English
出版社：PC Technology Center
摘要：The mathematical model of filtering with regard to colmatation and suffusion in the system bioplato-filter 2. This saturated porous medium is considered in terms of a complex heterogeneous system "fill"-"concentration of pollutants in porous liquid-concentration of colmatating particles. Vzaêmovplivi system parameters are taken into account through:1) the dynamic change of the porosity of the backfill in the process of filtering;2) nonlinear dependence coefficient filter porosity of backfill;3) dependence of velocity of filtration coefficient of filtering and gradient heads, and hence – and porosity.Taking into account the following interplays allowed to increase the adequacy of mathematical models for the study of physical processes, however, led to the necessity of the study of nonlinear boundary value problems for systems of differential equations in partial derivatives. Nonlinearity of the boundary value problem does not allow to speak about her analytical solutions. Numerical solutions of the problems found by the method of finite elements with a software implementation of the relevant algorithms in FreeFem ++.Computer modeling showed that when taking into account nonlinear dependence coefficient of filtration from the concentration of colmatating particles and dynamic changes of porosity in the process of filtering, predictive performance bioplato for six months reduced by 25 % . Therefore, it is necessary to develop engineering solutions for reducing the influence of the colmatation-suffusion processes on the processes of filtering. The forecasting work bioplato relevant conduct on the design stage in order to implement predictive calculations. It is done by means of mathematical and computer modeling.
关键词：bioplato-filter;the problem of filtration;colmatation;suffusion;finite element method;FreeFem