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Image analyses for video-based remote structure vibration monitoring system

Yang YANG,Xiong (Bill) YU

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 12-21 doi: 10.1007/s11709-016-0313-6

Abstract: ., frame difference method, particle image velocimetry, and optical Flow Method) are utilized to analyzeOptical flow method achieved the best performance among these three methods studied.

Keywords： structure health monitoring     velocity estimation     frame difference     PIV     optical-flow method    

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The Improving Characteristics of the Gradual Gaussian Multidimensional Pre-filter for Optical Flow Estimation

Fu Jun,Xu Weipu

Strategic Study of CAE 2004, Volume 6, Issue 12,   Pages 56-61

Abstract:

Based on the unified estimation-theoretic framework, an effective method of using the gradual Gaussianmultidimensional pre-filter to improve the optical flow estimation is presented.flow field, are altered with adjusting the spatiotemporal standard deviation parameters.flow computing method.flow computing method by nearly 13.6 % .

Keywords： optical flow computing     Gaussian multidimensional filter     PSNR     motion estimation    

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New computational treatment of optical wave propagation in lossywaveguides

Jian-xin ZHU,Guan-jie WANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 8,   Pages 646-653 doi: 10.1631/FITEE.1400406

Abstract: In this paper, the optical wave propagation in lossy waveguides is described by the Helmholtz equationwith the complex refractive-index, and the Chebyshev pseudospectral method is used to discretize theMeanwhile, an operator marching method, a one-way re-formulation based on the Dirichletto-Neumann (DtN

Keywords： Adjoint operator     Orthogonal     Chebyshev     Pseudospectral method     Dirichlet-to-Neumann map    

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The Following-observing Method for Substance Flow Analysis

Lu Zhongwu

Strategic Study of CAE 2006, Volume 8, Issue 1,   Pages 18-25

Abstract:

The fundamental argument set forth in the paper is that flow is the common feature of fluid flow andsubstance flow.” method, and the other-“standing-observing” method.It is emphasized that the following-observing method is applicable not only for studying steady substanceof indexes of lead flow.

Keywords： methods of substance flow analysis     following-observing method for substance flow analysis     basic equationsfor substance flow analysis     degree of unsteadiness of substance flow    

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3D finite element method (FEM) simulation of groundwater flow during backward erosion piping

Kristine VANDENBOER,Vera van BEEK,Adam BEZUIJEN

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2,   Pages 160-166 doi: 10.1007/s11709-014-0257-7

Abstract: In this work, a 3D numerical approach of the groundwater flow leading to the erosion mechanism of backward

Keywords： backward erosion piping     groundwater flow     3D finite element method (FEM)    

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On the MHD squeeze flow between two parallel disks with suction or injection via HAM and HPM

D. D. GANJI,M. ABBASI,J. RAHIMI,M. GHOLAMI,I. RAHIMIPETROUDI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 270-280 doi: 10.1007/s11465-014-0303-0

Abstract:

An analysis has been performed to study the problem of magneto-hydrodynamic (MHD) squeeze flow ofThe analytical methods called Homotopy Analysis Method (HAM) and Homotopy Perturbation Method (HPM) have

Keywords： Homotopy Analysis Method     Homotopy Perturbation Method     incompressible flow     magneto-hydrodynamic flow     parallel    

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Numerical study and control method of interaction of nucleation and boundary layer separation in condensingflow

Liansuo AN , Zhi WANG , Zhonghe HAN ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 254-261 doi: 10.1007/s11708-009-0047-4

Abstract: of condensation was calculated by the quadrature method of moments that shows good accuracy with veryThe results show that the degree of flow separation in wet steam flow is greater than that in superheatedA method for controlling homogeneous nucleation and for reducing degree of flow separation in high-speedtransonic wet steam flow was presented.The numerical study provides a practical design method for turbine blade to reduce wetness losses.

Keywords： wet steam     two-phase flow     spontaneous condensation     numerical simulation     flow separation     profile loss    

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Optical performance analysis of an innovative linear focus secondary trough solar concentrating system

Xiliang ZHANG, Zhiying CUI, Jianhan ZHANG, Fengwu BAI, Zhifeng WANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 590-596 doi: 10.1007/s11708-018-0602-y

Abstract: Besides, the optical performance of the semi and the whole secondary solar trough concentrator was evaluatedby using the ray tracing method.

Keywords： secondary parabolic trough solar concentrator     ray tracing method     linear focus     concentration ratio     optical    

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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.And the velocity distribution is more uniformity and is closer to the mass flow with the friction coefficient

Keywords： discrete         element          method        (DEM)             non-spherical    

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Vectorial Eigenmode Analysis of Optical Waveguides Based on the Variable Transformed Series ExpansionMethod

Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 49-53

Abstract:

Vectorial eigenmodes supported by the buried rectangular and rib optical waveguides are obtained usingvariable transformed series expansion method.In addition, small matrix derived from this method promotes the computational efficiency.

Keywords： variable transformed series expansion method     optical waveguides     vectorial eigenmode analysis    

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Flow behavior of non-spherical particle flowing in hopper

He TAO,Wenqi ZHONG,Baosheng JIN

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 315-321 doi: 10.1007/s11708-014-0331-9

Abstract: Ellipsoidal particles flowing in the hopper were simulated by using the discrete element method (DEM), and described by the multi-element method.Additionally, the mass flow rate, pressure distribution and velocity distribution of two kinds of particlesThe results show that the mass flow rate of ellipsoidal particles is smaller than that of spherical particles

Keywords： discrete element method     ellipsoidal particle     flow behavior     hopper    

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Analysis on the Performance of Lightwave in the Large-core Optical Fiber Connector

Wang Yunming,Sun Xiaohan,Zhang Mingde

Strategic Study of CAE 2002, Volume 4, Issue 10,   Pages 52-56

Abstract:

An analytical model for the large-core optical fiber connector is presented based on beam propagationmethod(BPM).

Keywords： beam propagation method (BPM)     large-core optical fibers     tapered connector     insert loss    

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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 deducedbased on the associated flow rule for the traditional plastic theory.

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

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Numerical Simulation of Rotor/Stator Interaction in Turbomachinery by Use of a Disturbance Vortex Methodfor Compressible Flow

Chen Maozhang,Peng Bo

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 15-23

Abstract:

A disturbance vortex method for simulating rotor/stator interaction in turbomachinery was developedThis method has some obvious advantages in simulating unsteady flow in turbomachinery, such as understandable

To validate the computational method, the unsteady flows caused by rotor/stator interactionFrom the simulation results it can seen that the disturbance vortex method still converges fast evensurface is expressed by an elliptic-type Laplace equation rather than a hyperbolic-type equation even the flow

Keywords： turbomachinery     rotor/stator interaction     disturbance vortex method     compressible flow     unsteady flow    

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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: and the water distribution in the mine by separate use of various exploration methods such as seismic methodTo 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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Title Author Date Type Operation

Image analyses for video-based remote structure vibration monitoring system

Yang YANG,Xiong (Bill) YU

Journal Article

The Improving Characteristics of the Gradual Gaussian Multidimensional Pre-filter for Optical Flow Estimation

Fu Jun,Xu Weipu

Journal Article

New computational treatment of optical wave propagation in lossywaveguides

Jian-xin ZHU,Guan-jie WANG

Journal Article

The Following-observing Method for Substance Flow Analysis

Lu Zhongwu

Journal Article

3D finite element method (FEM) simulation of groundwater flow during backward erosion piping

Kristine VANDENBOER,Vera van BEEK,Adam BEZUIJEN

Journal Article

On the MHD squeeze flow between two parallel disks with suction or injection via HAM and HPM

D. D. GANJI,M. ABBASI,J. RAHIMI,M. GHOLAMI,I. RAHIMIPETROUDI

Journal Article

Numerical study and control method of interaction of nucleation and boundary layer separation in condensingflow

Liansuo AN , Zhi WANG , Zhonghe HAN ,

Journal Article

Optical performance analysis of an innovative linear focus secondary trough solar concentrating system

Xiliang ZHANG, Zhiying CUI, Jianhan ZHANG, Fengwu BAI, Zhifeng WANG

Journal Article

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

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

Journal Article

Vectorial Eigenmode Analysis of Optical Waveguides Based on the Variable Transformed Series ExpansionMethod

Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong

Journal Article

Flow behavior of non-spherical particle flowing in hopper

He TAO,Wenqi ZHONG,Baosheng JIN

Journal Article

Analysis on the Performance of Lightwave in the Large-core Optical Fiber Connector

Wang Yunming,Sun Xiaohan,Zhang Mingde

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

Numerical Simulation of Rotor/Stator Interaction in Turbomachinery by Use of a Disturbance Vortex Methodfor Compressible Flow

Chen Maozhang,Peng Bo

Journal Article

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

Jishan He

Journal Article