We established a dodecane-water-graphite system from molecular dynamics insight. The effiects of surface roughness on the three-phase contact line are studied from the aspects of the microscopic contact angle, adsorpt...
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This article was originally published online on 9 June 2016 with affiliation 3 incorrectly assigned to the second author. Chun Li is not affiliated with the Lab
This article was originally published online on 9 June 2016 with affiliation 3 incorrectly assigned to the second author. Chun Li is not affiliated with the Lab
N-butanol/iso-octane blends chemical kinetic mechanism is established on the basis of a nbutanol reaction submodel and part of a high-temperature oxidation mechanism of iso-octane, laminar flame speeds of iso-octane/n...
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N-butanol/iso-octane blends chemical kinetic mechanism is established on the basis of a nbutanol reaction submodel and part of a high-temperature oxidation mechanism of iso-octane, laminar flame speeds of iso-octane/n-butanol blends are simulated and compared with the experimental data sets. It reveals that the Su increases nonlinearly with the increase of n-butanol in the blend and implies that the intermediates of n-butanol are more reactive. Then detailed kinetic path analysis of both nbutanol and iso-octane was performed to find out the rationale for the accelerating. The most influential intermediate reactions were determined for the blend, and flame propagation is largely negative related to concentration of ic4h8 c3h6 and CH3, while C2H4 and C2H3 contribute to the promotion of laminar flame speeds. Flame structures of n-butanol blending iso-octane were also computed and correspond to the kinetic path analysis.
In this work, we have developed a data-driven model which is used for the optimization of planning operations of a large petrochemical complex, comprising of a petrochemical plant and two ethylene plants. We have deve...
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ISBN:
(纸本)9781467386838
In this work, we have developed a data-driven model which is used for the optimization of planning operations of a large petrochemical complex, comprising of a petrochemical plant and two ethylene plants. We have developed unit operation models for all of the processes present within the industrial superstructure, which are integrated with mass-balance, property specification, demand, capacity and unit selection constraints, to form the overall planning problem. The models in this formulation contain parameters which are automatically fitted based on the data obtained from the operation of the plant units. For the dynamic updating of the model parameters, we have developed a user-friendly computational platform which allows the input of new operational data as well as cost, price, demand and specification information for the planning period of interest. Once the parameters are updated and the predictive ability of the models is confirmed, the formed mixed integer nonlinear optimization problem is solved to global optimality, providing the globally optimal flowrates and operating modes which maximize the profit, while simultaneously satisfying specification and demand constraints. Using the developed framework, we have obtained results for multiple case studies proving that the obtained solutions lead to significant improvements in profit when compared to historically applied operating plans.
The environmental pollution by trace heavy metals is a severe problem for the environment and human health. In this paper, the liquid jet of CsNO3 solution employed was introduced to the measurement chamber and detect...
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The RPI (Rensselaer Polytechnic Institute) wall boiling model, embedded in the context of two-fluid model of Fluent14.5, was applied to simulate subcooled boiling in core fuel bundle channel with mixing vanes and spac...
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The application and fundamental study on turbulent premixed combustion of hydrogen enriched natural gas is reviewed in this *** include the combustion characteristics of direct injection engine fueled with hydrogen en...
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The application and fundamental study on turbulent premixed combustion of hydrogen enriched natural gas is reviewed in this *** include the combustion characteristics of direct injection engine fueled with hydrogen enriched natural gas,visualization study of direct injection combustion of hydrogen enriched natural gas using a constant volume vessel,and the fundamental study of turbulent premixed combustion of hydrogen enriched natural *** effect of additional hydrogen on the combustion process of natural gas engine is investigated from the fundamental view of the interaction between combustion reaction and turbulent flow.
A new 1D model using the real gas property is proposed to predict ejector performance at critical and sub-critical operational modes, while most previous 1D models usually used the ideal gas property and only predicte...
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A new 1D model using the real gas property is proposed to predict ejector performance at critical and sub-critical operational modes, while most previous 1D models usually used the ideal gas property and only predicted ejector performance at critical mode operation. Constant pressure mixing is assumed to occur inside the constant area section of the ejector at critical and sub-critical mode operation, and the effectiveness of the model is verified against experimental data. The results show that the proposed model accurately predicts ejector performance over all ranges of operation. The 1D model is a useful tool for predicting ejector performance within larger refrigeration cycle models.
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