• Complex
  • Title
  • Author
  • Keyword
  • Abstract
  • Scholars
Search
High Impact Results & Cited Count Trend for Year Keyword Cloud and Partner Relationship

Query:

学者姓名:何茂刚

Refining:

Source

Submit Unfold

Co-Author

Submit Unfold

Language

Submit

Clean All

Export Sort by:
Default
  • Default
  • Title
  • Year
  • WOS Cited Count
  • Impact factor
  • Ascending
  • Descending
< Page ,Total 37 >
Molecular structure and transport of ionic liquid confined in asymmetric graphene-coated silica nanochannel EI
期刊论文 | 2022 , 345 | Journal of Molecular Liquids
Abstract&Keyword Cite

Abstract :

The transport of ionic liquids (ILs) in nanochannel is greatly restricted, and facilitating transport of ILs is of great significance to their applications in gas separation, battery and supercapacitor, etc. In this work, we use molecular dynamic simulation to investigate the molecular structure, charge distribution, diffusion behavior and flow characteristics of [EMIM][BF4] confined in asymmetric graphene-coated silica nanochannel to provide information for guiding the fabricate of nanodevice, and analyze the influence of nanochannel height, coating graphene and driving pressure. Water also studied as a comparison. The results indicate that [EMIM][BF4] and water confined in silica nanochannel present layered structure, and coating graphene on the wall surface of silica nanochannel can enhance the layering effect, and uniformize the charge distribution and reduce the diffusion coefficient. [EMIM][BF4] presents different flow states at varying nanochannel height, including Poiseuille flow and partial plunger flow, but water only presents Poiseuille flow. Coating graphene on wall surface of silica nanochannel results obvious positive slippage on the wall surface and the fast transport in nanochannel. © 2021 Elsevier B.V.

Keyword :

Charge transfer Diffusion Silica Molecular dynamics Charge distribution Graphene Molecular structure Ionic liquids

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Liu, Xiangyang , Zong, Xiaotong , Xue, Sa et al. Molecular structure and transport of ionic liquid confined in asymmetric graphene-coated silica nanochannel [J]. | Journal of Molecular Liquids , 2022 , 345 .
MLA Liu, Xiangyang et al. "Molecular structure and transport of ionic liquid confined in asymmetric graphene-coated silica nanochannel" . | Journal of Molecular Liquids 345 (2022) .
APA Liu, Xiangyang , Zong, Xiaotong , Xue, Sa , Liu, Hui , He, Maogang . Molecular structure and transport of ionic liquid confined in asymmetric graphene-coated silica nanochannel . | Journal of Molecular Liquids , 2022 , 345 .
Export to NoteExpress RIS BibTex
Measurements of critical properties of ethyl propionate with the gasoline components EI SCIE
期刊论文 | 2021 , 322 | Journal of Molecular Liquids
Abstract&Keyword Cite

Abstract :

Ethyl propionate is a good choice as additive to improve the combustion performance of gasoline. In this work, the critical temperature (Tc) and critical temperature (pc) of five binary systems (ethyl propionate + n-hexane, ethyl propionate + n-heptane, ethyl propionate + n-octane, ethyl propionate + n-propanol, ethyl propionate + n-butanol) and one ternary system (ethyl propionate + n-hexane + n-propanol) were measured. The results show that the addition of ethyl propionate increases the Tc of n-hexane, n-propanol and n-heptane while decreases the Tc of n-octane and n-butanol. The binary system of ethyl propionate and n-heptane and the ternary system of ethyl propionate + n-hexane + n-propanol are positive azeotropes. The pc of all studied systems changes linearly with the concentration of ethyl propionate. The applicability of Redlich–Kister equations, Cibulka equations and Singh-Sharma equations were checked. © 2020 Elsevier B.V.

Keyword :

Ternary systems Hexane Volatile fatty acids Gasoline Temperature Heptane Propanol

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Lan, Tian , Yao, Chuanqi , Liu, Xiangyang et al. Measurements of critical properties of ethyl propionate with the gasoline components [J]. | Journal of Molecular Liquids , 2021 , 322 .
MLA Lan, Tian et al. "Measurements of critical properties of ethyl propionate with the gasoline components" . | Journal of Molecular Liquids 322 (2021) .
APA Lan, Tian , Yao, Chuanqi , Liu, Xiangyang , Wang, Chengjie , Liu, Yang , He, Maogang . Measurements of critical properties of ethyl propionate with the gasoline components . | Journal of Molecular Liquids , 2021 , 322 .
Export to NoteExpress RIS BibTex
Two-Binary-Interaction-Parameter Model for Molecular Solute plus Ionic Liquid Solution EI SCIE
期刊论文 | 2021 , 60 (30) , 11490-11501 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Abstract&Keyword Cite

Abstract :

Ionic liquids are becoming increasingly important as environmentally friendly solvents for extraction and reactions. To describe the equilibrium phenomenon of monomolecular solute + ionic liquid, a two-binary-interaction-parameter (TBIP) model is proposed based on excess Gibbs free energy derived from excess internal energy, which circumvents the difficulty of directly formulating excessive entropy. Different from conventional binary solutions, monomolecular solute + ionic liquid is a peculiar ternary solution, which theoretically needs six binary-interaction parameters. However, due to strong repulsive electrostatic forces between like-ions, the like-ions pairs are negligible in comparison with dislike-ion and molecule-ion pairs. When local electroneutrality is assumed, the necessary binary interaction parameters finally are reduced to only two. Tested against experimental data, our TBIP model shows a better precision for most solutions than a non-random two-liquid (NRTL) model. When correlated with only half points, the TBIP model has a better extrapolation performance, while the NRTL model fails to work for R1234ze(E)/[EMIM][BF4], ethanol/[MMIM][(CH3)(2)PO4], and water/[EMIM][Tf2N].

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Bai, Lihang , Wang, Tao , Weisensee, Patricia B. et al. Two-Binary-Interaction-Parameter Model for Molecular Solute plus Ionic Liquid Solution [J]. | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2021 , 60 (30) : 11490-11501 .
MLA Bai, Lihang et al. "Two-Binary-Interaction-Parameter Model for Molecular Solute plus Ionic Liquid Solution" . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 60 . 30 (2021) : 11490-11501 .
APA Bai, Lihang , Wang, Tao , Weisensee, Patricia B. , Liu, Xiangyang , He, Maogang . Two-Binary-Interaction-Parameter Model for Molecular Solute plus Ionic Liquid Solution . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2021 , 60 (30) , 11490-11501 .
Export to NoteExpress RIS BibTex
General models for prediction densities and viscosities of saturated and unsaturated fatty acid esters EI SCIE
期刊论文 | 2021 , 341 | JOURNAL OF MOLECULAR LIQUIDS
Abstract&Keyword Cite

Abstract :

Biodiesel is a very promising renewable energy, whose properties are determined by fatty acid esters in it. The work aims to develop prediction models based on their molecular structure to estimate the density and viscosity of saturated and unsaturated fatty acid esters in a wide range of temperature and pressure. Densities and viscosities of ethyl hexanoate and ethyl nonanoate were measured from 313.15 K to 363.15 K and at pressures up to 15 MPa to get more experimental data. The effect of temperature, pressure and molecular structure on density and viscosity based on the experimental data in this work and collected from literature found an interesting phenomenon that densities decrease with the increasing carbon atoms number in the chain of the saturated fatty acid esters at low temperature, but there is an opposite trend at high temperature. Two models derived from the Tait equation were proposed for densities with the average absolute relative deviation of 0.15% for saturated fatty acid methyl esters (FAMEs), 0.13% for saturates fatty acid ethyl esters (FAEEs), 0.17% for unsaturated FAMEs, 0.06% for unsaturated FAEEs, respectively. For viscosity, two models based on the Andrade-Tait model were proposed with the average absolute relative deviation of 1.49% for saturated FAMEs, 0.92% for saturated FAEEs, 4.54% for unsaturated FAMEs and 2.15% for unsaturated FAEEs, respectively. (C) 2021 Elsevier B.V. All rights reserved.

Keyword :

Temperature Density Pressure Viscosity Fatty acid esters Molecular structure

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Xue, Sa , Hou, Kun , Zhang, Ziwen et al. General models for prediction densities and viscosities of saturated and unsaturated fatty acid esters [J]. | JOURNAL OF MOLECULAR LIQUIDS , 2021 , 341 .
MLA Xue, Sa et al. "General models for prediction densities and viscosities of saturated and unsaturated fatty acid esters" . | JOURNAL OF MOLECULAR LIQUIDS 341 (2021) .
APA Xue, Sa , Hou, Kun , Zhang, Ziwen , Liu, Hui , Zhu, Chenyang , Liu, Xiangyang et al. General models for prediction densities and viscosities of saturated and unsaturated fatty acid esters . | JOURNAL OF MOLECULAR LIQUIDS , 2021 , 341 .
Export to NoteExpress RIS BibTex
Improving the Thermophysical Properties of n-Butanol Gasoline by Adding Dimethyl Carbonate EI
期刊论文 | 2021 , 42 (6) , 1390-1395 | Journal of Engineering Thermophysics
Abstract&Keyword Cite

Abstract :

n-Butanol is a promising alternative to gasoline. In this work, DMC is used to improve the thermophysical properties of n-butanol to improve its combustion efficiency. The densities, viscosities and heat capacities of DMC + n-butanol binary mixtures were measured from 313.2 K to 333.3 K and at pressures up to 18.0 MPa using a capillary and flow calorimeter, respectively. Experimental results show that DMC can greatly reduce viscosity, heat capacity and meanwhile increase the density, which is expected to improve the combustion efficiency of n-butanol. Models were proposed for the calculation of the densities, viscosities and capacities of the binary mixtures of DMC and n-butanol with the average absolute relative deviations of 0.09%, 2.58% and 0.17%, respectively. © 2021, Science Press. All right reserved.

Keyword :

Gasoline Viscosity Specific heat Energy efficiency Combustion Binary mixtures

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Xue, Sa , Liu, Hui , Liu, Xiang-Yang et al. Improving the Thermophysical Properties of n-Butanol Gasoline by Adding Dimethyl Carbonate [J]. | Journal of Engineering Thermophysics , 2021 , 42 (6) : 1390-1395 .
MLA Xue, Sa et al. "Improving the Thermophysical Properties of n-Butanol Gasoline by Adding Dimethyl Carbonate" . | Journal of Engineering Thermophysics 42 . 6 (2021) : 1390-1395 .
APA Xue, Sa , Liu, Hui , Liu, Xiang-Yang , He, Mao-Gang . Improving the Thermophysical Properties of n-Butanol Gasoline by Adding Dimethyl Carbonate . | Journal of Engineering Thermophysics , 2021 , 42 (6) , 1390-1395 .
Export to NoteExpress RIS BibTex
Impact of oil presence on the evaporator enthalpy working with R1234ze(E) and R1234yf EI SCIE
期刊论文 | 2021 , 129 , 153-162 | INTERNATIONAL JOURNAL OF REFRIGERATION
Abstract&Keyword Cite

Abstract :

R1234ze(E) and R1234yf, as green refrigerants, have received more and more attention in recent years. To better understand the performance of the evaporator working with a refrigerant/lubricating oil mix-ture, the solubilities of R1234ze(E)/POE85 and R1234yf/POE85 were measured using the isochoric satu-ration method in the temperature range from 278.15 K to 348.15 K. The NRTL model was used to corre-late the new data. Using the new data, the pressure-enthalpy-vapor quality diagram and superheat-non -evaporation diagram were presented. The results show that the enthalpies of refrigerant/lubricating oil are always lower than those of pure refrigerant. The critical vapor quality is related to the refrigerant/oil solubility and oil circulation mass ratio. The enthalpy change ratio is directly proportional to the super-heat and inversely proportional to the oil circulation mass fraction. The non-evaporation quality decreases as the superheat increases and increases as the mass fraction of oil circulation increases. (c) 2021 Elsevier Ltd and IIR. All rights reserved.

Keyword :

R1234ze(E) POE85 R1234yf Pressure-enthalpy-vapor quality diagram &nbsp Solubility

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Sun, Yanjun , Wei, Qiming , Wang, Jian et al. Impact of oil presence on the evaporator enthalpy working with R1234ze(E) and R1234yf [J]. | INTERNATIONAL JOURNAL OF REFRIGERATION , 2021 , 129 : 153-162 .
MLA Sun, Yanjun et al. "Impact of oil presence on the evaporator enthalpy working with R1234ze(E) and R1234yf" . | INTERNATIONAL JOURNAL OF REFRIGERATION 129 (2021) : 153-162 .
APA Sun, Yanjun , Wei, Qiming , Wang, Jian , Wang, Xiaopo , He, Maogang . Impact of oil presence on the evaporator enthalpy working with R1234ze(E) and R1234yf . | INTERNATIONAL JOURNAL OF REFRIGERATION , 2021 , 129 , 153-162 .
Export to NoteExpress RIS BibTex
A novel method overcomeing overfitting of artificial neural network for accurate prediction: Application on thermophysical property of natural gas EI SCIE
期刊论文 | 2021 , 28 | CASE STUDIES IN THERMAL ENGINEERING
Abstract&Keyword Cite

Abstract :

As a powerful tool to solve nonlinear problems, artificial neural network method (ANN) gets a wide range of applications in data regression. However, the overfitting often occurs during the ANN training process, which results in high accuracy of correlating the training data but poor prediction performance. At the same time, the principle of k-Nearest Neighbor method (kNN) makes it impossible to make an accurate prediction exceeding the range of the training data, but it can confine the overfitting of ANN. In this work, combining ANN and kNN, a new machine learning method called ANN-kNN combination method (AKC) for thermophysical property prediction of material is proposed. To evaluate the performance of AKC, we take the thermophysical properties of natural gas as an example. The inputs of AKC are temperature, pressure and the components of natural gas, the outputs are the compressibility factor, speed of sound and viscosity. AKC not only overcomes the overfitting problem but also needs less training data than ANN. The average absolute relative deviation of AKC for prediction are 2.5%, which are better than ANN (5.9%) and kNN (19.2%).

Keyword :

Data learning Natural gas Artificial neuron network Machine learning K-nearest neighbor regression

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Chu, Jianchun , Liu, Xiangyang , Zhang, Ziwen et al. A novel method overcomeing overfitting of artificial neural network for accurate prediction: Application on thermophysical property of natural gas [J]. | CASE STUDIES IN THERMAL ENGINEERING , 2021 , 28 .
MLA Chu, Jianchun et al. "A novel method overcomeing overfitting of artificial neural network for accurate prediction: Application on thermophysical property of natural gas" . | CASE STUDIES IN THERMAL ENGINEERING 28 (2021) .
APA Chu, Jianchun , Liu, Xiangyang , Zhang, Ziwen , Zhang, Yilin , He, Maogang . A novel method overcomeing overfitting of artificial neural network for accurate prediction: Application on thermophysical property of natural gas . | CASE STUDIES IN THERMAL ENGINEERING , 2021 , 28 .
Export to NoteExpress RIS BibTex
Calculations of uniaxial tensile strength of Al–Cu–Ni based metallic glasses using molecular dynamics simulations EI SCIE
期刊论文 | 2021 , 602 | Physica B: Condensed Matter
WoS CC Cited Count: 1
Abstract&Keyword Cite

Abstract :

Molecular dynamics (MD) simulations have been performed to investigate the mechanical properties (MPs) of Al–Cu–Ni based metallic glasses (MGs). The embedded atom method interaction potential has been employed for present MD technique. Due to brittle nature of Cu50Zr50 we studied the effect of Al (2 at%) on the MPs. Moreover, effect of Co and Ni (2 at%) on MPs of two component MGs (NiAl and FeCu respectively) is studied that are generated by melt quenching processes. The structure of samples is changed at melting and glass transition temperatures and the radial distribution function provides the appropriate outcomes for crystalline and glassy states. The mechanical analysis of three MGs has been investigated by employing uniaxial tensile deformation for a wide range of varying stain rates. It has been shown that the MPs of MGs are significantly expanded by the accumulation of Al, Co and Ni concentrations. It is revealed from the MD results that yield strength, Young modulus and ultimate tensile strength increase with an increase of stain rates at constant temperature. The computer software LAAMPS is used in order to investigate these MPs of MGs. In addition, computer software (OVITO) has been used for the visualization of crystalline and glassy states. The numerical outcomes obtained from MD method are found to be in satisfactory agreement with that obtained through the earlier known numerical MD results. © 2020 Elsevier B.V.

Keyword :

Computer software Numerical methods Nickel Cobalt Metallic glass Iron alloys Glass transition Zircaloy Glass Tensile strength Binary alloys Distribution functions Molecular dynamics Copper alloys

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Shahzad, Aamir , Kashif, Muhammad , Munir, Tariq et al. Calculations of uniaxial tensile strength of Al–Cu–Ni based metallic glasses using molecular dynamics simulations [J]. | Physica B: Condensed Matter , 2021 , 602 .
MLA Shahzad, Aamir et al. "Calculations of uniaxial tensile strength of Al–Cu–Ni based metallic glasses using molecular dynamics simulations" . | Physica B: Condensed Matter 602 (2021) .
APA Shahzad, Aamir , Kashif, Muhammad , Munir, Tariq , Martib, Meher-Un-Nisa , Perveen, Atia , He, Maogang et al. Calculations of uniaxial tensile strength of Al–Cu–Ni based metallic glasses using molecular dynamics simulations . | Physica B: Condensed Matter , 2021 , 602 .
Export to NoteExpress RIS BibTex
Multi-scale Study on Property Distortion Mechanism of Supercritical Fluid EI
期刊论文 | 2021 , 55 (11) , 1921-1929 | Atomic Energy Science and Technology
Abstract&Keyword Cite

Abstract :

To fill the theoretical gap of the property distortion mechanism of supercritical fluids, the molecular dynamics simulation at the micro scale, mean field theory and scale theory at the mesoscopic scale, and property measurement experiments at the macro scale were analyzed. The molecular dynamics simulation was used to obtain the microstructure characteristics of carbon dioxide system when crossing pseudo-critical points, and the molecular dynamics mechanism of property distortion was obtained by analyzing the variation law of structural parameters such as pair radial distribution function. The simulation result proves the existence of gas-like region, liquid-like region and the rapid transitions between them. Based on Landau theory and scale theory, a new model was proposed to quantitatively predict the distortion laws of thermodynamic quantities such as density and isobaric specific heat of supercritical fluids near the pseudo-critical region and approaching the critical point. Compared with the classical Landau theory, the new model is based on a redefined order parameter η and adds a first order term of η. This term represents the effect of the external field on the thermodynamic potential, and also corresponds to the effect of temperature and pressure on the fluid system. At the macro scale, high-precision measurement experiments of density, isobaric specific heat and viscosity of supercritical carbon dioxide was carried out, and the potential defects of existing models were pointed out in this paper. The accuracy of the existing thermodynamic property calculation models of carbon dioxide are good outside the pseudo-critical region, but there are still defects inside pseudo-critical region or near the critical point. Moreover, the calculation accuracy needs to be verified by experiment and further improved. The results show that for different supercritical fluids, there is a general law of property distortion near the critical point and in the pseudo-critical region. On the phase diagram, the supercritical fluid region can be further divided into four regions: The vicinity of the critical point, gas-like region, liquid-like region and pseudo-critical region. In different regions, the characteristics of supercritical fluids are dominated by the laws at different scales. In the vicinity of the critical point, the fluctuation within the system plays a dominant role, which leads to the inapplicability of both mean field theory and continuum hypothesis. Therefore, the study of fluid in this region must start with more basic assumptions, based on molecular dynamics simulation or lattice Boltzmann method. However, the vicinity of the critical point is so small that the classical descriptions are valid in most conditions. © 2021, Editorial Board of Atomic Energy Science and Technology. All right reserved.

Keyword :

Carbon dioxide Mean field theory Supercritical fluid extraction Distribution functions Effluent treatment Molecular dynamics Supercritical fluids Defects Density functional theory Liquids Specific heat

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Liu, Minyun , Huang, Yanping , Tang, Jia et al. Multi-scale Study on Property Distortion Mechanism of Supercritical Fluid [J]. | Atomic Energy Science and Technology , 2021 , 55 (11) : 1921-1929 .
MLA Liu, Minyun et al. "Multi-scale Study on Property Distortion Mechanism of Supercritical Fluid" . | Atomic Energy Science and Technology 55 . 11 (2021) : 1921-1929 .
APA Liu, Minyun , Huang, Yanping , Tang, Jia , Zang, Jinguang , Zhao, Xuebin , Huang, Shanfang et al. Multi-scale Study on Property Distortion Mechanism of Supercritical Fluid . | Atomic Energy Science and Technology , 2021 , 55 (11) , 1921-1929 .
Export to NoteExpress RIS BibTex
Charging system analysis, energy consumption, and carbon dioxide emissions of battery electric buses in Beijing EI SCIE
期刊论文 | 2021 , 26 | Case Studies in Thermal Engineering
Abstract&Keyword Cite

Abstract :

Bus rides have become a routine choice for the large population to travel in Beijing. By the end of November 2020, 82.84% of all buses in Beijing had switched to electric vehicles. A solution to the problem of charging a huge number of battery electric buses (BEBs) in urban areas, especially in crowded cities with large populations, has to be found. In the present paper, a calculation model based on the levelized cost of electricity (LCOE) is established for comparison and analysis of the BEB charging. The calculation results show that the hybrid charging mode is economically feasible. Moreover, from the perspectives of optimizing operation shifts and responding to emergency situations, hybrid charging mode is applicable to the current electric bus system. The calculation results also show that the use of BEBs as the main ground public transportation in Beijing can substantially reduce CO2 emissions and save huge fuel costs. Its application is a very wise choice. The analogy calculation on Tongzhou District, the sub center of Beijing which is under construction, shows that the use of BEBs in Tongzhou can reduce CO2 emissions by about 34.6% on average compared with fuel buses. The population is the main influencing factor of analogy calculation. © 2021 The Authors

Keyword :

Bus transportation Secondary batteries Charging (batteries) Battery electric vehicles Cost benefit analysis Carbon dioxide Global warming Energy utilization

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Zhang, Xinxin , Nie, Shangyang , He, Maogang et al. Charging system analysis, energy consumption, and carbon dioxide emissions of battery electric buses in Beijing [J]. | Case Studies in Thermal Engineering , 2021 , 26 .
MLA Zhang, Xinxin et al. "Charging system analysis, energy consumption, and carbon dioxide emissions of battery electric buses in Beijing" . | Case Studies in Thermal Engineering 26 (2021) .
APA Zhang, Xinxin , Nie, Shangyang , He, Maogang , Wang, Jingfu . Charging system analysis, energy consumption, and carbon dioxide emissions of battery electric buses in Beijing . | Case Studies in Thermal Engineering , 2021 , 26 .
Export to NoteExpress RIS BibTex
10| 20| 50 per page
< Page ,Total 37 >

Export

Results:

Selected

to

Format:
FAQ| About| Online/Total:1016/98470699
Address:XI'AN JIAOTONG UNIVERSITY LIBRARY(No.28, Xianning West Road, Xi'an, Shaanxi Post Code:710049) Contact Us:029-82667865
Copyright:XI'AN JIAOTONG UNIVERSITY LIBRARY Technical Support:Beijing Aegean Software Co., Ltd.