Concentration driven phase transitions in multiphase porous media with application to methane oxidation in landfill cover layers
Concentration driven phase transitions in multiphase porous media with application to methane oxidation in landfill cover layers
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多相多孔介质中浓度驱动的相变及其在垃圾填埋场覆盖层中甲烷氧化的应用
DOI:
10.1002/zamm.201200198
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Schmidt
中科院分区:
文献类型:
--
作者:
Ricken;Sindern;Widmann;Denecke;Gehrke;Schmidt
This study focuses on a formulation within the theory of porus media for continuum multicomponent modeling of bacterial driven methane oxidation in a porous landfill cover layer which consists of a porous solid matrix (soil and bacteria) saturated by a liquid (water) and gas phase. The solid, liquid, and gas phases are considered as immiscible constituents occupying spatially their individual volume fraction. However, the gas phase is composed of three components, namely methane (CH4), oxygen (O2), and carbon dioxide (CO2). A thermodynamically consistent constitutive framework is derived by evaluating the entropy inequality on the basis of Coleman and Noll [8], which results in constitutive relations for the constituent stress and pressure states, interaction forces, and mass exchanges. For the final set of process variables of the derived finite element calculation concept we consider the displacement of the solid matrix, the partial hydrostatic gas pressure and osmotic concentration pressures. For simplicity, we assume a constant water pressure and isothermal conditions. The theoretical formulations are implemented in the finite element code FEAP by Taylor [29]. A new set of experimental batch tests has been created that considers the model parameter dependencies on the process variables; these tests are used to evaluate the nonlinear model parameter set. After presenting the framework developed for the finite element calculation concept, including the representation of the governing weak formulations, we examine representative numerical examples.
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影响因子:
64.8
作者:
J. Bluhm
通讯作者:
J. Bluhm
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
T. Ricken;A. Schwarz;J. Bluhm
通讯作者:
J. Bluhm
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
F. Ming;J. Howell;M. Cánovas
通讯作者:
M. Cánovas
影响因子:
4.7
作者:
Ebigbo, Anozie;Helmig, Rainer;Gerlach, Robin
通讯作者:
Gerlach, Robin
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
T. Ricken;J. Bluhm
通讯作者:
J. Bluhm