Pore-scale simulation of coupled multiple physicochemical thermal processes in micro reactor for hydrogen production using lattice Boltzmann method

Chen, Li; Kang, Qinjun; He, Ya‐Ling; Tao, Wen‐Quan

doi:10.1016/j.ijhydene.2012.07.050

Cited by 73 publications

(27 citation statements)

References 43 publications

(56 reference statements)

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“…[44]. The accuracy and efficiency of the reduced D2Q5 model has been confirmed in other studies [2,3,13,33,[44][45][46][47][48][49]. The concentration is obtained by…”

Section: B the Lb Model For Mass Transportsupporting

confidence: 62%

Pore-scale modeling of multiphase reactive transport with phase transitions and dissolution-precipitation processes in closed systems

et al. 2013

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A pore-scale model based on the lattice Boltzmann (LB) method is developed for multiphase reactive transport with phase transitions and dissolution-precipitation processes. The model combines the single-component multiphase Shan-Chen LB model [X. Shan and H. Chen, Phys. Rev. E 47, 1815 (1993)], the mass transport LB model [S. P. Sullivan et al., Chem. Eng. Sci. 60, 3405 (2005)], and the dissolution-precipitation model [Q. Kang et al., J. Geophys. Res. 111, B05203 (2006)]. Care is taken to handle information on computational nodes undergoing solid-liquid or liquid-vapor phase changes to guarantee mass and momentum conservation. A general LB concentration boundary condition is proposed that can handle various concentration boundaries including reactive and moving boundaries with complex geometries. The pore-scale model can capture coupled nonlinear multiple physicochemical processes including multiphase flow with phase separations, mass transport, chemical reactions, dissolution-precipitation processes, and dynamic evolution of the pore geometries. The model is validated using several multiphase flow and reactive transport problems and then used to study the thermal migration of a brine inclusion in a salt crystal. Multiphase reactive transport phenomena with phase transitions between liquid-vapor phases and dissolution-precipitation processes of the salt in the closed inclusion are simulated and the effects of the initial inclusion size and temperature gradient on the thermal migration are investigated.

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“…[44]. The accuracy and efficiency of the reduced D2Q5 model has been confirmed in other studies [2,3,13,33,[44][45][46][47][48][49]. The concentration is obtained by…”

Section: B the Lb Model For Mass Transportsupporting

confidence: 62%

Pore-scale modeling of multiphase reactive transport with phase transitions and dissolution-precipitation processes in closed systems

et al. 2013

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“…In this work, for the first time, the LBM is adopted to simulate the electrochemical processes (both reaction and transport) in a CL under PEMFC cathode conditions. The evolution equation for the concentration distribution function is as follows g i ðx þ c i Dt; t þ DtÞ À g i ðx; tÞ ¼ À 1 t g ðg i ðx; tÞ À g eq i ðx; tÞÞ þ a i S O 2 Dt (12) where g i is the distribution function with velocity c i at the lattice site x and time t. It is worth mentioning that for simple geometries, a D3Q7 (3 dimensional 7 lattice directions) lattice model (or D2Q5 model in 2D) is sufficient to accurately predict the diffusion process and properties, which can greatly reduce the computational resources, compared with D3Q19 (or D2Q9 in 2D), as proven by our previous work [29,33,34,[50][51][52][53]. For complex porous structures, especially for those with relatively low porosity such as CL, using a reduced lattice model will damage the connectivity of certain phases, thus leading to underestimated effective transport properties.…”

Section: Methodsmentioning

confidence: 82%

Lattice Boltzmann Pore-Scale Investigation of Coupled Physical-electrochemical Processes in C/Pt and Non-Precious Metal Cathode Catalyst Layers in Proton Exchange Membrane Fuel Cells

Chen

Holby

et al. 2015

Electrochimica Acta

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127

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“…The lattice Boltzmann method has been used in pore-scale simulations [51][52][53][54][55][56], but mostly for methodology research and rarely for flow simulations in real pore geometry in an oil reservoir. The lattice Boltzmann method develops very quickly in pore-scale simulation of porous media for its easy treatment of complex boundary.…”

Section: Lattice Boltzmann Methodsmentioning

confidence: 99%

Advances in Pore-Scale Simulation of Oil Reservoirs

Wang

et al. 2018

Energies

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Abstract:At the high water cut stage, the residual oil in a reservoir becomes complex and dispersed. Moreover, it is challenging to achieve good predictions of the movement of oil and water in a reservoir according to the macroscopic models based on the statistic parameters of this scenario. However, pore-scale simulation technology based on directly tracking the interaction among different phases can make an accurate prediction of the fluid distribution in the pore space, which is highly important in the improvement of the recovery rate. In this work, pore-scale simulation methods, including the pore network model, lattice Boltzmann method, Navier-Stokes equation-based interface tracking methods, and smoothed particle hydrodynamics, and relevant technologies are summarized. The principles, advantages, and disadvantages, as well as the degree of difficulty in the implementation are analyzed and compared. Problems in the current simulation technologies, micro sub-models, and applications in physicochemical percolation are also discussed. Finally, potential developments and prospects in this field are summarized.

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Pore-scale simulation of coupled multiple physicochemical thermal processes in micro reactor for hydrogen production using lattice Boltzmann method

Cited by 73 publications

References 43 publications

Pore-scale modeling of multiphase reactive transport with phase transitions and dissolution-precipitation processes in closed systems

Pore-scale modeling of multiphase reactive transport with phase transitions and dissolution-precipitation processes in closed systems

Lattice Boltzmann Pore-Scale Investigation of Coupled Physical-electrochemical Processes in C/Pt and Non-Precious Metal Cathode Catalyst Layers in Proton Exchange Membrane Fuel Cells

Advances in Pore-Scale Simulation of Oil Reservoirs

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