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An approach to calculating allowable watershed pollutant loads

Yu GUO, Haifeng JIA

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 658-671 doi: 10.1007/s11783-012-0446-3

Abstract: Under the guidance of this framework, two major steps were as follows: modeling and scenario analysiswere involved and should be applied to support the decision of discharge loads management; EnvironmentalFluid Dynamic Code (EFDC) model was selected as the kernel model in this framework.In modeling step, spatial discretization for establishing cell map in model, data preprocessing, parameter

Keywords： Source water protection     watershed management     pollutants load allocation     Environmental Fluid Dynamic Code(EFDC) modeling     margin of safety     statistical analysis    

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Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluiddynamic and reaction kinetic modeling

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1149-1163 doi: 10.1007/s11705-021-2096-0

Abstract: The novelty of this work is the computational fluid dynamic model combined with the novel carbon dioxide

Keywords： carbon dioxide photoreduction     computational fluid dynamic simulation     kinetic model     Langmuir adsorption    

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The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV

Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 159-167 doi: 10.15302/J-FASE-2018216

Abstract: The downwash flow field of the multi-rotor unmanned aerial vehicle (UAV), formed by propellers during operation, has a significant influence on the deposition, drift and distribution of droplets as well as the spray width of the UAV for plant protection. To study the general characteristics of the distribution of the downwash airflow and simulate the static wind field of multi-rotor UAVs in hovering state, a 3D full-size physical model of JF01-10 six-rotor plant protection UAV was constructed using SolidWorks. The entire flow field surrounding the UAV and the rotation flow fields around the six rotors were established in UG software. The physical model and flow fields were meshed using unstructured tetrahedral elements in ANSYS software. Finally, the downwash flow field of UAV was simulated. With an increased hovering height, the ground effect was reduced and the minimum current velocity increased initially and then decreased. In addition, the spatial proportion of the turbulence occupied decreased. Furthermore, the appropriate operational hovering height for the JF01-10 is considered to be 3 m. These results can be applied to six-rotor plant protection UAVs employed in pesticide spraying and spray width detection.

Keywords： CFD simulation     downwash flow field     numerical analysis     plant protection     six-rotor UAV    

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Static and dynamic analysis of functionally graded fluid-infiltrated porous skew and elliptical nanoplates

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 477-502 doi: 10.1007/s11709-023-0918-5

Abstract: The analysis of static bending and free and forced vibration responses of functionally graded fluid-infiltrated

Keywords： static bending     free and forced vibrations     nonlocal theory     isogeometric analysis     fluid-infiltrated    

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Explicit finite element method for calculation and analysis to the elasto-plastic dynamic response offluid-saturated porous media

LI Liang, DU Xiuli, LI Liyun, ZHAO Chenggang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 436-442 doi: 10.1007/s11709-007-0059-2

Abstract: In order to describe the elasto-plastic dynamic response of fluid-saturated porous media, the incrementalelasto-plastic wave propagation equations of fluid-saturated porous media are developed by the fundamentaltheory of continuum mechanics and appointing to the characteristic of fluid-saturated porous media.time-domain explicit finite element method is developed for calculation and analysis of the elasto-plastic dynamicresponse of fluid-saturated porous media.

Keywords： discretization     computational     calculation     integral     requirement    

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Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 267-273 doi: 10.1007/s11709-008-0034-6

Abstract: This paper outlines the essentials and procedures of computational fluid dynamics (CFD) simulation applicable

Keywords： discretization     computational     description     Self-anchored Suspension     simulation applicable    

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An enhanced environmental multimedia modeling system based on fuzzy-set approach: I.

Chesheng ZHAN,Rongrong ZHANG,Xiaomeng SONG,Baolin LIU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 494-505 doi: 10.1007/s11783-013-0609-x

Abstract: Multimedia environmental modeling is extremely complex due to the intricacy of the systems with the considerationTraditional environmental multimedia models (EMMs) are usually based on one-dimensional and first-orderIn this study, a new user-friendly fuzzy-set enhanced environmental multimedia modeling system (FEEMMSmultimedia modeling system (EMMS); and designing a user-friendly graphic user interface (GUI).by contaminants released from a contaminated site; and quantifying the uncertainties associated with modeling

Keywords： environmental multimedia modelling     fuzzy-set approach     theoretical framework     environmental protection    

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Dynamic simulation of urban water metabolism under water environmental carrying capacity restrictions

Weihua ZENG,Bo WU,Ying CHAI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 114-128 doi: 10.1007/s11783-014-0669-6

Abstract: Feedback loops can be analyzed to increase the water environmental carrying capacity (WECC) of the new

Keywords： urban water metabolism system (UWMS)     system dynamic simulation     water environmental carrying capacity    

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PRESS-based EFOR algorithm for the dynamic parametrical modeling of nonlinear MDOF systems

Haopeng LIU, Yunpeng ZHU, Zhong LUO, Qingkai HAN

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 390-400 doi: 10.1007/s11465-017-0459-5

Abstract: orthogonal regression (EFOR) based on predicted residual sums of squares (PRESS) to construct a nonlinear dynamicMoreover, a 5-DOF nonlinear system is taken as a case to illustrate the modeling of the proposed algorithmFinally, a dynamic parametrical model of a cantilever beam is constructed from experimental data.Results indicate that the dynamic parametrical model of nonlinear systems, which depends on the PRESS-basedaccurately predict the output response, thus providing a theoretical basis for the optimal design of modeling

Keywords： MDOF     dynamic parametrical model     NARX model     PRESS-based EFOR     cantilever beam    

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Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 9-9 doi: 10.1007/s11465-021-0665-z

Abstract: Based on the mesh stiffness and USTE considering gear wear, a gear dynamic model is established, andComparison with the experimental results verifies the proposed dynamic model based on the new mesh relationship

Keywords： gear wear     mesh relationship     mesh stiffness     transmission error     vibration characteristics    

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Special issue: Wind turbine dynamic modeling, condition monitoring and diagnosis

Zheng YOU, Jinji GAO, Fulei CHU, Tielin SHI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 279-280 doi: 10.1007/s11465-017-0476-4

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An enhanced environmental multimedia modeling system based on fuzzy-set approach: II.

Rongrong ZHANG,Chesheng ZHAN,Xiaomeng SONG,Baolin LIU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1025-1035 doi: 10.1007/s11783-014-0655-z

Abstract: Part I of this study develops an enhanced environmental multimedia modeling system (EMMS) based on fuzzy-setThe modules of EMMS could support the entire environmental multimedia modeling system.Most of the modeling yields closely match the monitoring data collected from sites.with the aid of fuzzy-set approach, EMMS can be a reliable and powerful tool to address the complex environmentalpollution problems and provide an extensive support for decision makers in managing the contaminated environmental

Keywords： environmental multimedia modelling system     fuzzy-set approach     application     model validation     uncertainty    

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Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Frontiers of Chemical Science and Engineering   Pages 1672-1680 doi: 10.1007/s11705-022-2205-8

Abstract: In this work, the dynamic behavior of liquid film on the surface of wire mesh was analyzed by computationalfluid dynamics simulation.The dynamic behavior of liquid film on the surface of wire mesh can be divided into the following three

Keywords： stainless steel wire mesh     computational fluid dynamics     surface wettability     liquid film     impacting    

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Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 78-88 doi: 10.1007/s11465-015-0331-4

Abstract: To improve the dynamic characteristic of bearing structure, the dynamic modeling of the hydrostatic guidwayTo determine the dynamic model coefficients, numerical simulation of different cases between displacementand dynamic force of oil film are performed with fluent code.Based on a dynamic model and numerical simulation, every dynamic model’s parameters are calculatedThis paper provides a reference and preparation for the analysis of the dynamic model of the similar

Keywords： hydrostatic guidway     dynamic model     dynamic mesh technique     Levenberg-Marquardt     mass-spring-damper model    

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Preliminary study on dynamic characteristics of the tower supporting structure with soil-fluid-solid

Yan Genhua,Gu Hua,Lu Zhimin,Lin Yifeng

Strategic Study of CAE 2010, Volume 12, Issue 11,   Pages 47-52

Abstract: Based on considering fluid-solid coupling, the paper discusses the effect of seabed soil foundation elasticconditions on tower's dynamic characteristics.The comprehensive analytical result of dynamic characteristics with soil-fluid-solid coupling is given

Keywords： offshore wind farm     supporting structure     dynamic characteristics     soil-fluid-solid coupling    

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Title Author Date Type Operation

An approach to calculating allowable watershed pollutant loads

Yu GUO, Haifeng JIA

Journal Article

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluiddynamic and reaction kinetic modeling

Journal Article

The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV

Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN

Journal Article

Static and dynamic analysis of functionally graded fluid-infiltrated porous skew and elliptical nanoplates

Journal Article

Explicit finite element method for calculation and analysis to the elasto-plastic dynamic response offluid-saturated porous media

LI Liang, DU Xiuli, LI Liyun, ZHAO Chenggang

Journal Article

Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Journal Article

An enhanced environmental multimedia modeling system based on fuzzy-set approach: I.

Chesheng ZHAN,Rongrong ZHANG,Xiaomeng SONG,Baolin LIU

Journal Article

Dynamic simulation of urban water metabolism under water environmental carrying capacity restrictions

Weihua ZENG,Bo WU,Ying CHAI

Journal Article

PRESS-based EFOR algorithm for the dynamic parametrical modeling of nonlinear MDOF systems

Haopeng LIU, Yunpeng ZHU, Zhong LUO, Qingkai HAN

Journal Article

Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Journal Article

Special issue: Wind turbine dynamic modeling, condition monitoring and diagnosis

Zheng YOU, Jinji GAO, Fulei CHU, Tielin SHI

Journal Article

An enhanced environmental multimedia modeling system based on fuzzy-set approach: II.

Rongrong ZHANG,Chesheng ZHAN,Xiaomeng SONG,Baolin LIU

Journal Article

Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Journal Article

Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Journal Article

Preliminary study on dynamic characteristics of the tower supporting structure with soil-fluid-solid

Yan Genhua,Gu Hua,Lu Zhimin,Lin Yifeng

Journal Article