Developing of Multiscale Approach to HPC-Simulation of Multiphase Fluid Flows

Autor: V. O. Podryga, Sergey Polyakov, Nikita Tarasov
Rok vydání: 2021
Předmět:
Zdroj: Lobachevskii Journal of Mathematics. 42:2626-2636
ISSN: 1818-9962
1995-0802
Popis: The work is devoted to the development of multiscale approach for modeling the multiphase flows of liquid and gaseous hydrocarbons in plants for the processing of organic fuels. One of the important stages of such processing is the purification of crude oil or natural gas from various kinds of contaminants (metal particles, solid organic compounds, etc.). To model the cleaning processes, the multiscale mathematical model has been proposed that combines macroscopic and microscopic descriptions of multiphase fluid flows in the channel of the treatment system. As a test of the model, the problem of purifying natural gas from hydrogen sulfide by passing a contaminated fluid through a porous material is considered. The general mathematical model of the flow of a contaminated gas mixture consists of two main parts. The first part is related to the macroscopic scale of the treatment system and includes modified quasigasdynamic and quasihydrodynamic equations for describing multiphase multicomponent fluid flows, supplemented by reaction–convection–diffusion equations for the concentrations of harmful impurities. The second part of the model describes processes in the boundary layers and is based on the equations of analytical chemistry and molecular dynamics. An explicit algorithm has been developed for the numerical implementation of the macroscopic model. The aim of the work is a physically substantiated formulation of all components of the model and a preliminary calculation of microflow in a porous material.
Databáze: OpenAIRE
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