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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 duringTo study the general characteristics of the distribution of the downwash airflow and simulate the staticwind field of multi-rotor UAVs in hovering state, a 3D full-size physical model of JF01-10 six-rotorThe entire flow field surrounding the UAV and the rotation flow fields around the six rotors were establishedFinally, the downwash flow field of UAV was simulated.

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

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Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 386-397 doi: 10.1007/s11708-011-0156-8

Abstract: By performing gas flow field numerical simulations for several inlet Reynolds numbers (from 2 × 10to 9 × 10 ) and byflow ratios (from 10% to 20%), the present study has proposed to improve the flowNo particle has been included in the gas flow for a -epsilon turbulence model.Then the flow passage improvement method has focused on the separation area.in this study has succeeded in designing a shape which enhances the flow behavior.

Keywords： streamlines     pressure losses     flow passage improvement     inlet particle separator (IPS)    

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Investigation into the influence of diffuser stagger angles on the flow field and performance of a centrifugal

XI Guang, DING Haiping, YUAN Minjian, ZHANG Chunmei, ZHOU Li

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 290-294 doi: 10.1007/s11708-007-0041-7

Abstract: measured, and the influence of different stagger angles of vanes on the stage performance as well as flowfield was investigated numerically.field inside the centrifugal compressor is great.An optimal diffuser stagger angle should exist at a specified flow rate to make the characteristic ofthe flow optimized.

Keywords： diffuser stagger     incidence     different stagger     flow     centrifugal compressor    

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Numerical simulation of air flow field in high-pressure fan with splitter blades

LI Jianfeng, LU Junfu, ZHANG Hai, LIU Qing, YUE Guangxi

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 438-442 doi: 10.1007/s11708-008-0085-3

Abstract: For a deeper understanding of the flow characteristics in the high-pressure centrifugal blower of a fanUnder operational conditions, with the presence of splitter blades, the air flow rate of the fan increasedIt was also found that the length of the splitter blades affected the air flow and pressure drop.

Keywords： splitter     numerical simulation     presence     unstructured     operational    

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Combined Application of Wide-Field Electromagnetic Method and Flow Field Fitting Method for High-Resolution Article

Jishan He

Engineering 2018, Volume 4, Issue 5,   Pages 667-675 doi: 10.1016/j.eng.2018.09.006

Abstract: To solve this difficult problem, a combination of the wide-field electromagnetic method and the flowfield fitting method with three-dimensional resistivity data inversion was applied to determine the precise

Keywords： Wide-field electromagnetic method     Flow field fitting method     Goaf     Water abundance     High-resolution exploration    

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Analytical solutions of three-dimensional contaminant transport in uniform flow field in porous media

Hongtao WANG, Huayong WU

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 1,   Pages 112-128 doi: 10.1007/s11783-008-0067-z

Abstract: present a library of analytical solutions for the three-dimensional contaminant transport in uniform flowfield in porous media with the first-order decay, linear sorption, and zero-order production.widely applicable to solve contaminant transport problems of one- or multiple- dimensions in uniform flow

Keywords： solution library     contaminant transport     analytical solution     dispersion and advection     porous media     type curve     Green's function method (GFM)    

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The study of slip line field and upper bound method based on the non-associated flow rule

Zheng Yingren,Deng Chujian,Wang Jinglin

Strategic Study of CAE 2010, Volume 12, Issue 8,   Pages 56-69

Abstract:

The slip line field theory and the upper bound method based on the associatedIn this paper some problems existing in the slip line field theory and the upper bound method based onthe associated flow rule were analyzed.The slip line field theory and the upper bound method based on the non-associated flow rule were deducedaccording to the generalized plastic theory , which eliminated some inconsistencies in the slip line field

Keywords： slip line field     upper bound method     associated flow rule     non-associated flow rule     generalized plastic    

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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 flowFirst, the internal flow field of each impeller was calculated.The flow field of a working point was solved by multiple calculations and the actual working conditionThe 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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Numerical Simulation and Experimental Research on Flow Field in Goaf Under the Airflow Fluctuating

Li Yongcun,Lin Aihui,Wang Haiqiao,Liu Ronghua

Strategic Study of CAE 2008, Volume 10, Issue 2,   Pages 41-45

Abstract: mechanics, the theory of aerodynamics, the theory of mass and heat transfer, and the theory of infiltration flowmedia, mathematical model about airflow fluctuating in mine is established；distribution features of flowfield in goaf under the airflow fluctuating are researched by numerical simulation, and the model ismathematical model establi shed about airflow fluctuating in mine can be used for researching dist ribution of flowfield in goaf,and can provide an effective method to fire preve ntion and treatment in goaf.

Keywords： airflow fluctuating     mathematical model     numerical simulation     flow field in goaf    

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Treatability aspects of urban stormwater stressors

TAFURI, Richard FIELD

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 631-637 doi: 10.1007/s11783-012-0420-0

Abstract: This paper addresses the various pollutants or stressors in urban stormwater, including flow (shear force

Keywords： stormwater     wet weather flow     urban runoff    

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Experimental study on flow-field effect of circular gravity cage

Liu Chao,Guan Changtao,Cui Yong,Zhao Xia,Li Mengjie,Li Zhenzhen,Wang Tengteng

Strategic Study of CAE 2014, Volume 16, Issue 9,   Pages 69-77

Abstract: text-align: justify;">In order to understand hydrodynamic characteristics of circular gravity cage in varied flow-field, and obtain both the flow-velocity variations and flow-field distribution inside and around cages, fourThe ratio of flow-velocity reduction inside a cage remained approximately the same in different currentOn the effect of the flow-velocity reduction ,the cages with small mesh did better than the cages withAs current flowed through multiple cages, the flow velocity was gradually reduced.

Keywords： net cage     ADV     PIV     velocity     flow-field distribution    

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Modeling the gas flow in a cyclone separator at different temperature and pressure

Gujun WAN, Guogang SUN, Cuizhi GAO, Ruiqian DONG, Ying ZHENG, Mingxian SHI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 498-505 doi: 10.1007/s11705-010-0502-0

Abstract: The gas flow field in a cyclone separator, operated within a temperature range of 293 K – 1373 K andThe outer downward flow rate increases with a temperature increase, whereas it decreases with a pressureis strong in the region of 0 – 0.25 below the vortex finder entrance, which is named as a short-cut flowcalculate the combined effects of temperature and pressure on the tangential velocity, the downward flowrate in the cyclone and the centripetal radial velocity in the short-cut flow region underneath the

Keywords： cyclone separator     high temperature     high pressure     flow field     numerical simulation    

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A hybrid fuel cell for water purification and simultaneously electricity generation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1611-6

Abstract:

● A novel hybrid fuel cell (F-HFC) was fabricated.

Keywords： Flow-through field     Hybrid fuel cell     Polyoxometalates     Water purification     Electricity generation    

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Field Observations of Near-Surface Wind Flow Across Expressway Embankment on the Qinghai–Tibet Plateau

Yanhu Mu,Wei Ma,Zhaohui Joey Yang,Xiaolin Li,Kun Zhang,Yuncheng Mao,

Engineering 2022, Volume 14, Issue 7,   Pages 169-180 doi: 10.1016/j.eng.2021.10.020

Abstract: is a crucial working mechanism of these ACSs, it is imperative to understand the near-surface wind flowThis article describes a yearlong field observation of the NSWF across an experimental expressway embankment

Keywords： Near-surface wind flow     Field observation     Air-cooling structures     Linear transportation infrastructure    

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Application of subsea multiphase flow meter in the development of deepwater oil and gas fields

Liu Taiyuan,Guo Hong and Zheng Lijun

Strategic Study of CAE 2012, Volume 14, Issue 11,   Pages 69-74

Abstract: remarkable development of science and technology speeds up the development of the deeper oil and gas fieldRecent years there are more and more subsea multiphase flow meters installed and being in operation.The principles of multiphase flow measurement are introduced and other factors relevant to the measurementThe feasibility of cases is also presented and it is helpful for the selection of subsea multiphase flow

Keywords： deepwater     subsea multiphase flow meter     flow assurance     reservoir optimization     field development    

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Title Author Date Type Operation

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

Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Journal Article

Investigation into the influence of diffuser stagger angles on the flow field and performance of a centrifugal

XI Guang, DING Haiping, YUAN Minjian, ZHANG Chunmei, ZHOU Li

Journal Article

Numerical simulation of air flow field in high-pressure fan with splitter blades

LI Jianfeng, LU Junfu, ZHANG Hai, LIU Qing, YUE Guangxi

Journal Article

Combined Application of Wide-Field Electromagnetic Method and Flow Field Fitting Method for High-Resolution

Jishan He

Journal Article

Analytical solutions of three-dimensional contaminant transport in uniform flow field in porous media

Hongtao WANG, Huayong WU

Journal Article

The study of slip line field and upper bound method based on the non-associated flow rule

Zheng Yingren,Deng Chujian,Wang Jinglin

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

Numerical Simulation and Experimental Research on Flow Field in Goaf Under the Airflow Fluctuating

Li Yongcun,Lin Aihui,Wang Haiqiao,Liu Ronghua

Journal Article

Treatability aspects of urban stormwater stressors

TAFURI, Richard FIELD

Journal Article

Experimental study on flow-field effect of circular gravity cage

Liu Chao,Guan Changtao,Cui Yong,Zhao Xia,Li Mengjie,Li Zhenzhen,Wang Tengteng

Journal Article

Modeling the gas flow in a cyclone separator at different temperature and pressure

Gujun WAN, Guogang SUN, Cuizhi GAO, Ruiqian DONG, Ying ZHENG, Mingxian SHI

Journal Article

A hybrid fuel cell for water purification and simultaneously electricity generation

Journal Article

Field Observations of Near-Surface Wind Flow Across Expressway Embankment on the Qinghai–Tibet Plateau

Yanhu Mu,Wei Ma,Zhaohui Joey Yang,Xiaolin Li,Kun Zhang,Yuncheng Mao,

Journal Article

Application of subsea multiphase flow meter in the development of deepwater oil and gas fields

Liu Taiyuan,Guo Hong and Zheng Lijun

Journal Article