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High‑Temperature Electrochemical Devices Based on Dense Ceramic Membranes for CO_(2) Conversion and Utilization

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Electrochemical Energy Reviews 2021年第3期4卷 518-544页

作者： wenping Li Jing‑Li Luo Department of Chemical and Materials Engineering University of AlbertaEdmontonAB T6G 1H9Canada

The adverse effects of global warming and climate change have driven the exploration of feasible routes for CO_(2) capture,storage,conversion and *** processes related to CO_(2) conversion in high-temperature electrochemical devices(HTEDs)using dense ceramic membranes are particularly appealing due to the simultaneous realization of highly efficient CO_(2) conversion and value-added chemical production as well as the generation of electricity and storage of renewable energy in some ***,most studies are focused on the two processes,CO_(2) electrolysis and H2O/CO_(2) co-electrolysis in oxygen-conducting solid oxide electrolysis cell(O-SOEC)*** attention has been paid to other meaningful CO_(2)-conversion-related processes in HTEDs and systematic summary and analysis are currently not *** review will fill the gap and classify the CO_(2)-conversion-related processes in HTEDs reported in recent years into four types accord-ing to the related reactions,including assisted CO_(2) reduction to CO,H2O and CO_(2) co-conversion,dry reforming of methane and CO_(2) ***,an overview of the fundamentals of HTED processes is presented,and then the related mechanism and research progress of each type of reactions in different HTEDs are elucidated and concluded *** remaining major technical issues are also briefly ***,the main challenges and feasible solutions as well as the future prospects of HTEDs for CO_(2)-conversion-related processes are also discussed in this review.

关键词： Electrochemical devices High temperature CO_(2)reduction Co-conversion Dry reforming of methane CO_(2)hydrogenation

NUMERICAL SIMULATION OF SOUND RADIATION ON GEARBOX'S HOUSING

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Chinese Journal of Mechanical Engineering 2008年第3期21卷 26-30页

作者： XIANG Changle WANG wenping LIU Hui National Key Laboratory of Vehicle Transmission Beijing Institute of Technology Beijing 100081 China

The fluid-structure coupling finite element model and the boundary element model of a complex gearbox＇s housing are built based on the theory of fluid-structure coupling finite element method and boundary element method. At the same time, the exciting forces of the housing are analyzed and applied to the finite element models. Firstly, vibration of the housing is calculated by the fluid-structure coupling finite element model; secondly, the calculated result is verified by the experiment; finally, sound radiation of the housing is calculated by the boundary element. According to the calculated results, the housing adds some ribs not only to increase the strength, but also to reduce the sound radiation of the housing. At last, the sound radiation of the modified housing is calculated, which shows that the sound radiation of the modified housing with ribs is lower.

关键词： Sound radiation Finite element model Boundary element model Fluid-structure coupling

A High Order Control Volume Finite Element Method for Transient Heat Conduction Analysis of Multilayer Functionally Graded Materials with Mixed Grids

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Journal of Thermal Science 2020年第1期29卷 144-158页

作者： LIU Qi MING Pingjian ZHAO Haiyang ZHANG wenping College of power and energy engineering Harbin Engineering University

This paper describes a new two-dimensional(2-D)control volume finite element method(CV-FEM)for transient heat conduction in multilayer functionally graded materials(FGMs).To deal with the mixed-grid problem,9-node quadrilateral grids and 6-node triangular grids are *** unknown temperature and material properties are stored at the *** using quadratic triangular grids and quadratic quadrilateral grids,the present method offers greater geometric flexibility and the potential for higher accuracy than the linear *** properties of the FGMs are described by exponential,quadratic and trigonometric grading *** numerical tests are studied to demonstrate the performance of the developed ***,the present CV-FEM with mixed high-order girds provides a higher accuracy than the linear CV-FEM based on the same grid ***,the material properties defined location is proved to have a significant effect on the accuracy of the numerical ***,the present method provides better numerical solutions than the conventional FEM for the FGMs in conjunction with course high-order ***,the present method is also capable of analysis of transient heat conduction in multilayer FGM.

关键词： finite volume method functionally graded materials transient heat conduction

Vibration signal-based chatter identification for milling of thin-walled structure

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Chinese Journal of Aeronautics 2022年第1期35卷 204-214页

作者： wenping MOU Shaowei ZHU Zhenxi JIANG Ge SONG NC Machining Plant Chengdu Aircraft Industrial(Group)Co.LtdChengdu 610092China

In high speed milling aeronautical part,tool condition monitoring(TCM)is very important,because it is prone to get a chatter owing to the low stiffness of thin-walled *** the TCM is key technology for automated *** this paper,aiming to chatter monitoring in thin-walled structure milling,a variational mode decomposition–energy distribution(VMD-ED)method is proposed to improve the identification *** a moving average root mean square–mean value(MARMS-MV)identification method and a variational mode decomposition–energy entropy(VMD-EE)identification method are also *** accuracy and computing time of the three methods are *** vibration signals collected from the spindle and worktable are also *** conducted experimental study shows that,the proposed VMD-ED method offers an identification method for chatter monitoring with greater sensitivity,better stability and less computing time,and mounting the vibration sensor on worktable is better than spindle for a chatter monitoring system.

关键词： Chatter Milling Thin-walled structure Tool condition monitoring Vibration

Recent progress for hydrogen production by photocatalytic natural or simulated seawater splitting

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Nano Research 2020年第9期13卷 2313-2322页

作者： Jining Zhang wenping Hu Shuang Cao Lingyu Piao CAS Center for Excellence in Nanoscience CAS Key Laboratory of Standardization and Measurement for NanotechnologyNational Center for Nanoscience and TechnologyBeijing 100190China School of Science Tianjin UniversityTianjin 300072China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesChina

Solar energy is an inexhaustible renewable energy *** the various methods for solar energy conversion,photocatalytic hydrogen(H2)production is considered as one of the most promising *** Fujishima pioneered this field in 1972,photocatalytic water splitting to produce H2 has received widespread *** to now,abundant semiconductor materials have been explored as photocatalysts for pure water splitting to produce ***,photocatalytic seawater splitting is more in line with the concept of sustainable development,which can greatly alleviate the problem of limited freshwater *** present,only few studies have focused on the process of H2 production by photocatalytic seawater splitting due to the complex composition of seawater and lack of suitable *** this review,we outline the most recent advances in photocatalytic seawater *** particular,we introduce the H2 production photocatalysts,underlying mechanism of ions in seawater on photocatalytic seawater splitting,current challenges and future potential advances for this exciting field.

关键词： photocatalytic seawater hydrogen production photocatalytic mechanism

Anamorphic chaetosphaeriaceous fungi from China

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Fungal Diversity 2022年第5期116卷 1-546页

作者： wenping Wu Yongzhao Diao R&D Center Novozymes ChinaNo.14 Xin Xi LuShangdi ZoneHaidian DistrictBeijing 100085People’s Republic of China

Chaetosphaeriaceae is one of the largest families in Sordariomycetes with its members commonly found on decaying leaf,fruit,branch,bark and wood in both terrestrial and submerged environment in *** paper reports our research result of diversity,taxonomy and phylogeny of anamorphic Chaetosphaeriaceae in China,which is based on a systematic study with an integrated approach of morphological observation and phylogenetic analysis for a large collection(>1300 herbarium specimens and 1100 living strains).The family Chaetosphaeriaceae is expanded to accommodate 89 accepted genera,including 22 new genera and 10 newly assigned *** of these genera(except for Chaetosphaeria and several other relatively large genera)are delimitated as monophyletic genera with well-defined diagnostic characters in *** phylogenetic connection of non-phialidic Sporidesmium-like fungi is further confirmed and expanded to 10 different *** polyphyletic Codinaea/Dictyochaeta/Tainosphaeria complex is further resolved with a taxonomic framework of 28 monophyletic genera by redelimitation of Codinaea and Dictyochaeta with narrower concept,acceptance of the 16 established genera,and finally introduction of 10 new *** is phylogenetically redefined as monophyletic genus with narrower concept as typified by the type species,but a systematic review in both generic and species level is still *** biodiversity of chaetosphaeriaceous fungi,a total of 369 species in 76 genera,including 119 new species,47 new combinations,and one new name,are *** identification keys are provided for most genera,especially the large genera such as Codinaea ***.,Codinaeella,Stilbochaeta,Cryptophiale,Thozetella,Dinemasporium and *** addition,ten known species were excluded from the family and *** revision of several relatively large polyphyletic genera should be conducted in future studies,including Bahusutrabeeja,Ellisembia,Stanjehu

关键词： Chaetosphaeriaceae Anamorphs Diversity·Taxonomy Phylogeny China

The chalara-like anamorphs of Leotiomycetes

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Fungal Diversity 2023年第2期119卷 213-490页

作者： wenping Wu Yongzhao Diao R&D Center Novozymes ChinaNo.14 Xin Xi LuShang Di ZoneHaidian DistrictBeijing 100085People’s Republic of China

The chalara-like anamorphs of Leotiomycetes are phialidic hyphomycetes with cylindrical collarettes and deeply seated sporulating loci,and hyaline,aseptate or septate,cylindrical *** are commonly found on plant litters in both terrestrial and submerged environments,and with broad geographical *** paper reports our research result of diversity,taxonomy and phylogeny of these fungi in China,which is based on a systematic study by using an integrated approach of literature study,morphological observation and phylogenetic analyses of 153 chalara-like fungal species with diversified morphology in conidiomata,setae,conidiophores,phialides and *** phylogenetic analyses employing different datasets of SSU,LSU and ITS sequences of 116 species showed that these chalara-like fungi were paraphyletic and scattered in 20 accepted genera belonging to five families of Leotiomycetes:Arachnopezizaceae,Hamatocanthoscy-phaceae,Helotiaceae,Neolauriomycetaceae and *** six genera,Ascoconidium,Bioscypha,Chalaro-dendron,Didonia,Phaeoscypha and Tapesina,all reported with chalara-like anamorphs in literatures,are also accepted as members of Pezizellaceae or Leotiomycetes genera incertae *** of these 26 accepted genera of chalara-like fungi in Leotiomycetes,17 genera are asexually typified genera(Ascoconidium,Bloxamia,Chalara,Chalarodendron,Constric-tochalara,Cylindrochalara,Cylindrocephalum,Leochalara,Lareunionomyces,Minichalara,Neochalara,Neolauriomyces,Nagrajchalara,Parachalara,Stipitochalara,Xenochalara and Zymochalara),and 9 are sexually typified genera(Bioscypha,Bloxamiella,Calycellina,Calycina,Didonia,Hymenoscyphus,Mollisina,Phaeoscypha and Tapesina).The phylogenetic significance of conidial septation in generic delimitation was further confirmed;while other morphologies such as conidi-omata,setae,conidiophores,phialides,conidial length,and conidial ornamentation have little phylogenetic significance,but could be used for speci

关键词： Leotiomycetes Chalara-like fungi Anamorphs Diversity Taxonomy Phylogeny China

Aerodynamic performance of owl-like airfoil undergoing bio-inspired flapping kinematics

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Chinese Journal of Aeronautics 2021年第5期34卷 239-252页

作者： Xinyu LANG Bifeng SONG Wenqing YANG wenping SONG School of Aeronautics Northwestern Poly technical UniversityXi'an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China Yangtze River Delta Research Institute of Northwestern Polytechnical University Taicang 215400China

Natural flyers have extraordinary flight skills and their prominent aerodynamic performance has attracted a lot of ***,the aerodynamic mechanism of birds’flapping wing kinematics still lacks in-depth *** this paper,the aerodynamic performance of owl-like airfoil undergoing bio-inspired flapping kinematics extracted from a free-flying owl wing has been numerically *** overset mesh technique is used to deal with the large range movements of flapping *** bio-inspired kinematics consist of plunging and pitching movement.A pure sinusoidal motion and a defined motion composed of plunging of sinusoidal motion and pitching of the bio-inspired kinematics are selected for *** other two NACA airfoils are also selected to figure out the advantages of the owl-like *** is found that the cambered owl-like airfoil can enhance lift during the *** bio-inspired kinematics have an obvious advantage in lift generation with a presence of higher peak lift and positive lift over a wider proportion of the flapping ***,the bio-inspired motion is more economical for a lower power consumption compared with the sinusoidal *** sinusoidal flapping motion is better for thrust generation for a higher peak thrust value in both upstroke and downstroke,while the bio-inspired kinematics mainly generate thrust during the downstroke but produce more drag during the *** defined motion has similar lift performance with the bio-inspired kinematics,while it consumes more energy and generates less *** unsteady flow field around airfoils is also analyzed to explain the corresponding *** research in this paper is helpful to understand the flight mechanism of birds and to design a micro air vehicle with higher performance.

关键词： Aerodynamic performance Bio-inspired kinematics Flapping airfoils Low Reynolds number Micro aerial vehicles

The effect of wind on the dispersal of a tropical small river plume

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Frontiers of Earth Science 2018年第1期12卷 170-190页

作者： Junpeng ZHAO wenping GONG Jian SHEN School of Marine Sciences Sun Yat-Sen University Guangzhou 510275 China Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Sun Yat-Sen University Guangzhou 510275 China Virginia Institute of Marine Science The College of William and Mary Gloucester Point VA 23062 USA

Wanquan River is a small river located in Hainan, a tropical island in China. As the third largest river in Hainan, the river plume plays an important role in the regional terrigenous mass transport, coastal circulation, and the coral reef＇s ecosystem. Studies have shown that wind forcings significantly influence river plume dynamics. In this study, wind effects on the dispersal of the river plume and freshwater transport were examined numerically using a calibrated, unstructured, finite volume numerical model （FVCOM）. Both wind direction and magnitude were determined to influence plume dispersal. Northeasterly （downwelling-favorable） winds drove fresh- water down-shelf while southeasterly （onshore） winds drove water up-shelf （in the sense of Kelvin wave propagation） , and were confined near the coast. Southwesterly （upwelling-favorable） and northwesterly （off： shore） winds transport more freshwater offshore. The transport flux is decomposed into an advection, a vertical shear, and an oscillatory component. The advection flux dominates the freshwater transport in the coastal area and the vertical shear flux is dominant in the offshore area. For the upwelling-favorable wind, the freshwater transport becomes more controlled by the advection transport with an increase in wind stress, due to enhanced vertical mixing. The relative importance of wind forcing and buoyancy force was investigated. It was found that, when the Wedderburn number is larger than one, the plume was dominated by wind forcing, although the importance of wind varies in different parts of the plume. The water column stratification decreased as a whole under the prevailing southwesterly wind, with the exception of the up-shelf and offshore areas.

关键词： small river plume wind effect freshwater transport