Methane Diffusion in a Porous Environment

Abstract

The paper deals with modeling and simulation of methane flow through the porous environment using the CFD (Computational Fluid Dynamics) software Fluent. We compare three situations, which can occur in areas, where mining activities were closed few years ago, in this article. First case is modeling of methane flow through the rocks. Second event is situation where the thin water layer is situated at the surface. The last one is occurrence of groundwater. The article responds to the need for knowledge of natural processes in the given area and it follows our previous papers [1], [2]. Software Gambit was used for creating a geometric model of the working area, for modeling the flow of gas it was used CFD software, Fluent from ANSYS, Inc..

Optimization of Washing of Bound Component from White Hide

“…2, it is the state C or B. In the area of state C the washed component is free (does not bind); in area B the washed component is bound to solid phase [4]. In this area it is also possible to delimitate zone A, in which the sorption dependence is practically linear [2,3].…”

“…Condition (4) shows the initial distribution of calcium ions concentration in a white hide. Relation (5) describes that we use pure water for material bath washing.…”

EPC application framework in the context of Internet of Things

“…In our ILAB RFID laboratory we, among others, deal with presentations of meaning of the Internet of Things to the general public and that is why we focused in the first applications on the current events in the Czech Republic which are easy to understand for the public. Internet of Things principles and services can be found and can be used in variety of applications -for examples see [9,13,18,19]. Optimal design and optimal data transfer load and security are very important [14].…”