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Corrigendum to ‘Numerical simulation on sonic steam jet condensation in subcooled water through a double-hole nozzle’ [Int. J. Heat Mass Transfer 115 (2017) 143–147]

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International Journal of Heat and Mass Transfer 2017年 115卷 1360-1360页

作者： Lutao Wang Daotong Chong Lun Zhou Weixiong Chen Junjie Yan State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Xi’an 710049 PR China

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Influence of wettability on motion of compound droplets on solid surface in microchannel flow

Influence of wettability on motion of compound droplets on s...

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2016年大连国际微纳流体和微流控芯片大会(2016 International Conference of Microfluidics, Nanofluidics and Lab-On-A-Chip

作者： Xinglong Shang Bofeng Bai State Key Laboratory of Multiphase Flow in Power Engineering Xi ''an Jiaotong Universit Xi''an 710049China

To understand droplet motion on solid surfaces is very important for many applications such as enhanced oil recovery (Freitas et al.2011), droplet spreading, manipulation and fabrication of droplets in microfluidic devices (Worner et al.2012).Solid surface wettability affects significantly the movement of the contact line and hence dominants the motion of droplets on solid surfaces, especially when the flow is confined to microscale.

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Study on the Enhancement Effect of Dielectric Barrier Discharge on the Premixed Methane/Oxygen/Helium Flame Velocity

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Plasma Science and Technology 2015年第12期17卷 1019-1026页

作者：穆海宝喻琳李平汤成龙王金华张冠军 State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi'an Jiaotong University State key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University

Recently,plasma-assisted combustion has become a potentially applicable technology in many combustion *** this paper,a dielectric barrier discharge（DBD） plasma generator is designed to explore the effect of plasma on the CH4 oxidation process,and several properties of combustion are ***,in the presence or absence of plasma discharge,physical appearance of the flame is examined and ***,the flame propagation velocity is calculated by the flame front extracted from the imaging data with the Bunsen burner ***,the main molecular components and their intensity variation in the flame and the plasma zones are identified with an emission spectrograph to analyze the effect of active species on the combustion *** also discuss the possible kinetic regime of plasma-assisted *** results imply that plasma discharge applied to the premixed CH_4/O_2/He mixture significantly raises the flame speed with equivalence ratios ranging from 0.85 to 1.10,with the flame speed improved by 17%to 35%.It can be seen that plasma can improve methane oxidation efficiency in the premixed fuel/oxidizer,especially at a low equivalence ratio.

关键词： combustion flame Oxygen equivalence appearance Velocity scenarios burning camera hydrocarbon

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A ‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

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Angewandte Chemie 2019年第2期132卷

作者： Yukun Zhu Chunxiao Lv Zhuocheng Yin Jun Ren Xianfeng Yang Chung‐Li Dong Hongwei Liu Rongsheng Cai Yu‐Cheng Huang Wolfgang Theis Shaohua Shen Dongjiang Yang State Key Laboratory of Bio-fibers and Eco-textiles Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles Institute of Marine Biobased Materials School of Environmental Science and Engineering Qingdao University Qingdao 266071 P. R. China International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 P. R. China School of Chemical and Environmental Engineering North University of China Taiyuan 030051 P. R. China Analytical and Testing Centre South China University of Technology Guangzhou 510640 P. R. China Research Center for X-ray Science & Department of Physics Tamkang University Tamsui 25137 Taiwan The Australian Centre for Microscopy & Microanalysis The University of Sydney Sydney New South Wales 2006 Australia Nanoscale Physics Research Laboratory School of Physics and Astronomy University of Birmingham Birmingham B15 2TT UK

Red phosphorus is a promising photocatalyst with wide visible‐light absorption up to 700 nm, but the fast charge recombination limits its photocatalytic hydrogen evolution reaction (HER) activity. Now, [001]‐oriented Hittorf's phosphorus (HP) nanorods were successfully grown on polymeric carbon nitride (PCN) by a chemical vapor deposition strategy. Compared with the bare PCN and HP, the optimized PCN@HP hybrid exhibited a significantly enhanced photocatalytic activity, with HER rates reaching 33.2 and 17.5 μmol h −1 from pure water under simulated solar light and visible light irradiation, respectively. It was theoretically and experimentally indicated that the strong electronic coupling between PCN and [001]‐oriented HP nanorods gave rise to the enhanced visible light absorption and the greatly accelerated photoinduced electron–hole separation and transfer, which benefited the photocatalytic HER performance.

关键词： Heterostrukturen Nanostäbe Hittorfscher Phosphor Kohlenstoffnitrid Wasserspaltung

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The effects of Na+ and Cl-ions on the oil-water interface: a molecular dynamics study

The effects of Na+ and Cl-ions on the oil-water interface: a...

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2016年大连国际微纳流体和微流控芯片大会(2016 International Conference of Microfluidics, Nanofluidics and Lab-On-A-Chip

作者： Boyao Wen Chengzhen Sun Bofeng Bai State Key Laboratory of Multiphase Flow in Power Engineering Xi''an Jiaotong UniversityXi ''an Shaanxi 710049 China

Ions at the oil-water interface is a ubiquitous phenomenon which plays a important role in many industrial processes, such as extraction separation, nanoparticle assembly, enhanced oil recovery, *** the petroleum industry, due to the long-term interaction with solids and crude oil, the water including formation water, injection water and aqueous solution dissolves lots of ions, such as Na+, K+, Ca2+, Mg2+, Cl-, SO42-, *** migration of charged ions in the bulk phase or interface between oil and water has a significant influence on the molecudar packing of active species at the interface, zeta potential of oil droplets and microstructure and strength of interfacial film by changing the interfacial tension, interface viscosity and electrical repulsion of charged ganglia, thus affecting the stability of crude oil emulsions and the oil displacement in porous ***, more detailed knowledge of how ions affect the properties of oil-water interface is required.

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An experimental study of two-phase pressure drop of liquid nitrogen in circular horizontal channels 1

An experimental study of two-phase pressure drop of liquid n...

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1st International Conference IIR of Cryogenics and Refrigeration Technology, ICCRT 2016

作者： Chen, Xingya Zhang, Qiaoyu Xue, Rong Lai, Tianwei Hou, Yu State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University No.28 Xianning West Road Xi'an China School of Energy and Power Engineering Xi'an Jiaotong University No.28 Xianning West Road Xi'an China

ISBN: (纸本)9782362150173

Two-phase cryogenic flow are involved in many cooling systems. In order to study the mechanism of cryogenic two phase flow. Two-phase pressure drop of liquid nitrogen (LN2) in a circular horizontal channels was experimentally studied. A wide range of flow conditions: inlet pressure from 0.15 MPa to 0.30 MPa and mass flux from 120 kg/m2s to 320 kg/m2s, and tube diameters of 4 mm were performed in the experiment. The frictional pressure drop of two-phase LN2 in circular horizontal channel is estimated using two models, the homogeneous model and the separated flow model. In addition, the measured pressure drops are compared with those calculated from correlation models available for mini-scales. As a result, the homogeneous model with the Cicchitti et al. predict better than the other correlations mentioned in this study. © 2016, International Institute of Refrigeration. All rights reserved.

关键词： Two phase flow

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Research on droplets growth of Marangoni condensation during the time-series process

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Journal of Physics: Conference Series 2017年第1期925卷

作者： Y Li J Wang K Xia N Chen J Yan State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'lan 710049 P.R. China

In this paper, the condensate droplets growth of Marangoni condensation during the time-series process was experimentally studied. The photographs taken in the experiments were handled by image processing method. The droplets coverage ratio was introduced to analyse the growth process. As the time-series process went on, the condensate droplets coverage ratio increased fast at first, and then increased slowly until reaching a stable state. The droplets coverage ratio increased with the increase in the vapor-to-surface temperature difference and decreased with the increase in the ethanol vapor concentration.

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Simulation and experimental study of phase isolation induced by a static cyclone device in a vertical upward pipe

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International Journal of Energy for a Clean Environment 2015年第1-4期16卷 139-156页

作者： Wang, Shuai Wang, Dong Niu, Pengman Zhang, Xingkai State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an710049 China

The study puts forward a forced way to realize phase isolation by using a static cyclone device and provides a basis for a systematic study of the phase-isolation phenomenon for an oil-water two-phase flow in a vertical upward pipe. An optimized style of the static cyclone device was chosen to simulate the phase-isolation characteristics that are influenced by various flow parameters (density, viscosity, velocity, oil diameter, etc.). It is observed that the phase-isolation characteristics are well approaching the ideal condition with the oil superficial velocity below 0.20 m/s and water superficial velocity between 0.25 and 0.8 m/s. The experimental results, which agree well with the simulation, also show that the static cyclone device can successfully be used to realize phase isolation. The phase-isolation method may provide an innovative approach to the measurement of phase holdup, the process of water reinjection, and the heat and mass transfer rates of a multiphase flow. © 2015 by Begell House, Inc.

关键词： Two phase flow

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First principles investigation of quantum emission from hBN defects

arXiv

引用

arXiv 2017年

作者： Tawfik, Sherif Abdulkader Ali, Sajid Fronzi, Marco Kianinia, Mehran Tran, Toan Trong Stampfl, Catherine Aharonovich, Igor Toth, Milos Ford, Michael J. School of Mathematical and Physical Sciences University of Technology Sydney UltimoNSW2007 Australia Department of Physics GC University Faisalabad Allama Iqbal Road Faisalabad38000 Pakistan International Research Centre for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi710049 China School of Physics University of Sydney NSW2006 Australia

Hexagonal boron nitride (hBN) has recently emerged as a fascinating platform for room-temperature quantum photonics due to the discovery of robust visible light single-photon emitters. In order to utilize these emitters, it is necessary to have a clear understanding of their atomic structure and the associated excitation processes that give rise to this single photon emission. Here we perform density-functional theory (DFT) and constrained DFT calculations for a range of hBN point defects in order to identify potential emission candidates. By applying a number of criteria on the electronic structure of the ground state and the atomic structure of the excited states of the considered defects, and then calculating the Huang-Rhys (HR) factor, we find that the CBVN defect, in which a carbon atom substitutes a boron atom and the opposite nitrogen atom is removed, is a potential emission source with a HR factor of 1.66, in good agreement with the experimental HR factor. We calculate the photoluminescence (PL) line shape for this defect and find that it reproduces a number of key features in the the experimental PL lineshape. Copyright © 2017, The Authors. All rights reserved.

关键词： III-V semiconductors

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Molecular dynamics simulation of the adsorption of sodium dodecyl benzene sulfonate at the decane-water interface

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Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 2016年第5期37卷 1011-1015页

作者： Wen, Bo-Yao Sun, Cheng-Zhen Che, Yu-Quan Bai, Bo-Feng State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an710049 China Frist Gas Production Factory PetroChina Xinjiang Oilfield Branch Company Karamay834000 China

Molecular dynamics method was employed to explore the micro-characteristic of decane-water interface with the adsorption of sodium dodecyl benzene sulfonate (SDBS). We analyzed the effect of interfacial molecular arrangement on the micro-structure and properties of oil-water interface from concentration distribution and molecular conformation insights. The results show that the thickness of decane-water interface is 0.378 nm. Both decane molecules and the dipole moment of water molecules tend to be parallel to the interface. The aggregation of surfactants at the interface increases the thickness of oil-water interface, therefore weakening the oil-water interaction and disrupting the directional alignment of water and decane molecules. Meanwhile, we found that there are some cavities at the decane-water interface, combining with the strong electrostatic interaction between hydrophilic groups and water molecules, can aggravate the diffusion of water molecules at the interface, thus enhancing the deformation ability of the interface. © 2016, Science Press. All right reserved.

关键词： Molecular dynamics

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