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The relative permeability is a key parameter for describing multiphase flow in porous media. In this paper, a series of experiments were conducted to study the impact of displacement pressure gradient (DPG) to relative permeability curves using five cores from Shengli Oilfield. Then, an empirical model was proposed to consider the impact of DPG. Finally, the numerical simulation model was established...
Potassium-based carbonate looping in a circulating fluidized bed system including an absorber and a regenerator is a potential CO2 capture technology, which has attracted great focus in recent years. In the current work, the simulation of CO2 capture process is carried out by considering the influence of clusters on the hydrodynamic and reaction, where the multiscale reaction model is employed to...
The Opposed Multi-Burner (OMB) gasifier has been widely used in commercial plants throughout China. A comprehensive three-dimensional numerical model is developed for the simulation of an OMB gasifier. In this model, the realizable k–ε turbulence model is applied to close the Reynolds-averaged Navier–Stokes equation and the eddy-dissipation-concept model is used to simulate the homogeneous reactions...
In this paper, we compare 4D seismic interpretations of CO2 plume evolution with fluid-flow numerical simulation results for Cranfield, Mississippi. Historic pressure trends, oil and gas production rates, and current CO2-EOR production data from the field were history matched, and a tuned model was used for predictive simulations.For CO2-EOR operations, numerical simulation results of the CO2 plume...
The pre-mixed methane–air catalytic combustion on platinum is numerically modeled in steady condition. The aim of work goes to better understand how the operation and wall parameters affect the combustion of methane, especially the extinction, Pt(s) coverage and hot spot. For this purpose, a micro flatbed channel for pre-mixed methane–air catalytic combustion is investigated. It is clearly shown through...
Underground methane-rich and combustion-prone longwall mining gobs are usually subjected to the symbiotic thread between coal gas and combustion disasters. Quantitative understanding of this symbiosis is essential to mitigate these potential disasters. However, previous mathematical models mainly focused on the simulation disaster of coal gas flow in gobs or spontaneous combustion, less attention...
The main purpose of this study is to improve the numerical evaluation of gas injection enhanced coalbed methane (ECBM) recovery by establishing a new mathematical coalbed methane (CBM) simulation model, in which the two-dimensional Peng–Robinson equation of state (2D PR EOS) model and the Maxwell-Stefan bidisperse pore diffusion (MS-BPD) model for multicomponent gas adsorption and diffusion are implemented...
A comprehensive model with time limited wall reaction was developed for the simulation of complex gas particle molten slag three-phase reactions and flow processes in an entrained flow gasifier. Promotional conversion rate, wall reaction time and particle size/density evolution have been considered in the wall reaction model. In order to validate the proposed model, an industrial single swirling burner...
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