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Development of a novel two-stage proportional valve with a pilot digital flow distribution

Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 420-434 doi: 10.1007/s11465-020-0622-2

Abstract: digitization of the traditional proportional valve, a novel two-stage proportional valve with a pilot digitalflow distribution is proposed from the viewpoint of the dual nozzle-flapper valve’s working principlethe fixed orifice’s diameter, a new design criterion that considers the maximum pressure sensitivity, flowcontrollability, and flow linearization is proposed to improve the balance between the effective displacementThe values can be further improved by increasing the flow rate of the pilot HSV.

Keywords： two-stage proportional valve     digital flow distribution     high-speed on/off valve     position tracking characteristic    

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Application of digital holography to circle flow bed boiler measurement

PU Shiliang, WANG Qinghui, CEN Kefa, Denis Lebrun, REN Kuanfang

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 218-222 doi: 10.1007/s11708-007-0029-3

Abstract: The spatial distribution of particles in the boiler is very important in the study on the circle flowDigital in-line holography technique was applied to obtain the spatial and diameter distribution of theSo the three-dimensional (3D) images of the particles in the two-phase flow were reconstructed by the

Keywords： HE-NE     function     convolution     two-phase     diffraction    

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Simulation of horizontal slug-flow pneumatic conveying with kinetic theory

GU Zhengmeng, GUO Liejin

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 336-340 doi: 10.1007/s11708-007-0050-6

Abstract: Wavelike slug-flow is a representative flow type in horizontal pneumatic conveying.Kinetic theory was introduced to establish a 3D kinetic numerical model for wavelike slug gas-solid flowThe characteristics of the flow, such as pressure drop, air velocity distribution, slug length and settledindicate that kinetic theory can represent the physical characteristics of the non-suspension dense phase flowThe experiment in this paper introduced a new idea for the numerical calculation of slug-flow pneumatic

Keywords： velocity distribution     detailed     slug-flow     gas-solid     theory    

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The Study on Steady Flow and Transient Flow Mathematical Models for City’s Water Distribution Pipeline

Wang Shoudong,Shen Yongming,Jiang Hengzhi

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 26-30

Abstract:

Firstly,  based on node equation method,  a water distributionpipeline network steady flow mathematical model is established and is solved by using the Newton iteration Secondly,  the mathematic model for transient flow set up by characteristic method can beresults are that these models can be applied to hydraulic balance calculation for city's water distribution

Keywords： water distribution pipeline network     steady flow     transient flow     water hammer     Newton’s iteration method    

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Deformation field and crack analyses of concrete using digital image correlation method

Yijie HUANG, Xujia HE, Qing WANG, Jianzhuang XIAO

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1183-1199 doi: 10.1007/s11709-019-0545-3

Abstract: The study on the deformation distribution and crack propagation of concrete under axial compression wasconducted by the digital image correlation (DIC) method.The number and distribution range of cracks in concrete with high / were larger than those of cracks

Keywords： deformation filed distribution     crack development     digital image correlation method     mechanical properties    

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Digital representation of meso-geomaterial spatial distribution and associated numerical analysis of

YUE Zhongqi

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 80-93 doi: 10.1007/s11709-007-0008-0

Abstract: paper presents the author's efforts in the past decade for the establishment of a practical approach of digitalrepresentation of the geomaterial distribution of different minerals, particulars, and components inIn the proposed approach, digital image processing methods are used as measurement tools to constructa digital representation for the actual spatial distribution of the different materials and componentsproposed approach is one of the latest research and developments in geomechanics where actual spatial distribution

Keywords： homogeneous     numerical analysis     Expanded     homogenization     meso-level    

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Three-dimensional numerical simulation of flow in trapezoidal cutthroat flumes based on FLOW-3D

Danjie RAN, Wene WANG, Xiaotao HU

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 168-176 doi: 10.15302/J-FASE-2018217

Abstract: To solve the common problem of flumes flow-measurement accuracy without sacrificing water head, a newUsing the computational fluid dynamic method, three-dimensional flow fields in trapezoidal cutthroatVelocity distribution of the flume obtained from simulation analyses were compared with observed resultsbased on time-averaged flow field and comparison yielded a solid agreement between results from thethe Froude number was less than 0.5, which meets the water measurement requirement, and the critical flow

Keywords： distribution of velocity     Froude number     head loss     stage-discharge relationship     trapezoidal cutthroat flume    

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Effect of inlet box on performance of axial flow fans

LI Jingyin, TIAN Hua, YUAN Xiaofang

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 390-394 doi: 10.1007/s11708-008-0087-1

Abstract: Numerical investigations on 3D flow fields in an axial flow fan with and without an inlet box have beenextensively conducted, focusing on the variation of fan performance caused by the internal flow fieldsthat although the inlet box is well designed in accordance with basic design principles, there is a flowFurthermore, this flow separation and the resulting uneven velocity distribution at the exit lead toThis research shows that the inlet box needs further improvement and such a check on the flow fields

Keywords： box     velocity distribution     accordance     Numerical     variation    

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Quantification of coarse aggregate shape in concrete

Xianglin GU,Yvonne TRAN,Li HONG

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 308-321 doi: 10.1007/s11709-014-0266-6

Abstract: determined that the parameters for form or angularity of coarse aggregates could be fitted by either normal distributionor log-normal distribution at a 95% confidence level.

Keywords： coarse aggregate     form     angularity     digital image analysis     statistical distribution     splitting tensile strength    

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Characterization of 3D microstructure, thermal conductivity, and heat flow of cement-based foam using

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 643-651 doi: 10.1007/s11709-021-0709-9

Abstract: This study presents the results of the 3D microstructure, thermal conductivity, and heat flow in cement-basedmodel showed that heat flows through the cement paste solids and with an increase in porosity this flow

Keywords： 3D pore volume distribution     X-ray tomography     3D shape factor     heat flow    

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Numerical analysis of 3-D unsteady flow in a vaneless counter-rotating turbine

ZHAO Qingjun, WANG Huishe, ZHAO Xiaolu, XU Jianzhong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 352-358 doi: 10.1007/s11708-007-0053-3

Abstract: To reveal the unsteady flow characteristics of a vaneless counter-rotating turbine (VCRT), a three-dimensionalThe results show that unsteady simulation is superior to steady simulation because more flow characteristicsThe static pressure distribution along the span in the pressure surface of a high pressure turbine statorThe deviation is very big between the direction of air flow at the outlet of a high pressure turbine

Keywords： unsteady flow     three-dimensional     pressure distribution     similar result     unsteady simulation    

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Research and Application on Industrial Internet Ecosystem Model

Zhao Min , Liu Junyan , Zhu Duoxian

Strategic Study of CAE 2022, Volume 24, Issue 4,   Pages 53-61 doi: 10.15302/J-SSCAE-2022.04.006

Abstract: Digital intelligence flow exhibits the flow value of data—a new production factor—at differentflow, as described by the digital-knowledge dimension.The digital-knowledge flow is the data flow that carries digital knowledge.These layers analyze the value form of the digital-knowledge flow at different levels, revealing theinto the digital-knowledge flow, moving along the digital-knowledge dimension and continuously digitizing

Keywords： industrial Internet     ecosystem     model     digital intelligence flow     dynamic value flow    

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Removal, distribution and plant uptake of perfluorooctane sulfonate (PFOS) in a simulated constructed

Weichuan Qiao, Rong Li, Tianhao Tang, Achuo Anitta Zuh

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1312-3

Abstract: A vertical-flow constructed wetland (VFCW) was used to treat simulated domestic sewage containing perfluorooctane

Keywords： Vertical-flow constructed wetland     Perfluorooctane sulfonate     Wetland plants     Soil microbial community     Effect    

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Method of internal 3D flow field numerical simulation for hydrodynamic torque converter

SHANG Tao, ZHAO Dingxuan, ZHANG Yuankun, GUO Xiangen, SHI Xiangzhong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 86-90 doi: 10.1007/s11465-008-0012-7

Abstract: enhance the performance of a hydrodynamic torque converter and thoroughly understand the trait of inside flow, a numerical simulation method of internal 3D flow for the three-element centrifugal hydrodynamic torqueFirst, the internal flow field of each impeller was calculated.The pressure and velocity distributions of the flow field were proposed.The calculation method, and the proposed pressure and velocity distribution of the flow field, have practical

Keywords： velocity distribution     calculation     numerical simulation     three-element centrifugal     converter    

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Discrete element method modeling of corn-shaped particle flow in rectangular hopper

He TAO, Baosheng JIN, Wenqi ZHONG, Xiaofang WANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 267-275 doi: 10.1007/s11709-010-0035-0

Abstract: Discrete element method (DEM) was developed to simulate the corn-shaped particles flow in the hopper.The effect of friction coefficient on the wall pressure, voidage and velocity distribution was analyzedAnd the velocity distribution is more uniformity and is closer to the mass flow with the friction coefficient

Keywords：         method         (DEM)             non-spherical     voidage     pressure     velocity distribution    

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Title Author Date Type Operation

Development of a novel two-stage proportional valve with a pilot digital flow distribution

Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG

Journal Article

Application of digital holography to circle flow bed boiler measurement

PU Shiliang, WANG Qinghui, CEN Kefa, Denis Lebrun, REN Kuanfang

Journal Article

Simulation of horizontal slug-flow pneumatic conveying with kinetic theory

GU Zhengmeng, GUO Liejin

Journal Article

The Study on Steady Flow and Transient Flow Mathematical Models for City’s Water Distribution Pipeline

Wang Shoudong,Shen Yongming,Jiang Hengzhi

Journal Article

Deformation field and crack analyses of concrete using digital image correlation method

Yijie HUANG, Xujia HE, Qing WANG, Jianzhuang XIAO

Journal Article

Digital representation of meso-geomaterial spatial distribution and associated numerical analysis of

YUE Zhongqi

Journal Article

Three-dimensional numerical simulation of flow in trapezoidal cutthroat flumes based on FLOW-3D

Danjie RAN, Wene WANG, Xiaotao HU

Journal Article

Effect of inlet box on performance of axial flow fans

LI Jingyin, TIAN Hua, YUAN Xiaofang

Journal Article

Quantification of coarse aggregate shape in concrete

Xianglin GU,Yvonne TRAN,Li HONG

Journal Article

Characterization of 3D microstructure, thermal conductivity, and heat flow of cement-based foam using

Journal Article

Numerical analysis of 3-D unsteady flow in a vaneless counter-rotating turbine

ZHAO Qingjun, WANG Huishe, ZHAO Xiaolu, XU Jianzhong

Journal Article

Research and Application on Industrial Internet Ecosystem Model

Zhao Min , Liu Junyan , Zhu Duoxian

Journal Article

Removal, distribution and plant uptake of perfluorooctane sulfonate (PFOS) in a simulated constructed

Weichuan Qiao, Rong Li, Tianhao Tang, Achuo Anitta Zuh

Journal Article

Method of internal 3D flow field numerical simulation for hydrodynamic torque converter

SHANG Tao, ZHAO Dingxuan, ZHANG Yuankun, GUO Xiangen, SHI Xiangzhong

Journal Article

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

He TAO, Baosheng JIN, Wenqi ZHONG, Xiaofang WANG,

Journal Article