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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: The results show that unsteady simulation is superior to steady simulation because more flow characteristicsThe numerical results also indicate that the load of a high pressure turbine rotor will increase with

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

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Geometric optimization model for the solar cavity receiver with helical pipe at different solar radiation

Chongzhe ZOU, Huayi FENG, Yanping ZHANG, Quentin FALCOZ, Cheng ZHANG, Wei GAO

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 284-295 doi: 10.1007/s11708-019-0613-3

Abstract: This study constructed a 3-D numerical model of cylindrical cavity receiver with DNI variation.The simulation results show that for a particular DNI in the range of 400 W/m to 800 W/m , there exists

Keywords： cylindrical cavity receiver     3-D numerical simulation     geometric optimization     direct normal irradiation    

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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: performance of a hydrodynamic torque converter and thoroughly understand the trait of inside flow, a numericalsimulation method of internal 3D flow for the three-element centrifugal hydrodynamic torque converter

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

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Ductile extension of 3-D external circumferential cracks in pipe structures

Wuchao YANG, Xudong QIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 294-303 doi: 10.1007/s11709-011-0115-9

Abstract: This study investigates the ductile fracture resistance of 3-D external circumferential cracks in theThe fracture resistance along the 3-D semi-elliptical crack front is computed from the calibrated cellsimilarity concept in the near-tip stress-strain fields, this study demonstrates that an equivalent 2-Daxi-symmetric model provides conservative estimations of the fracture resistance for 3-D circumferential

Keywords： ductile fracture     computational cell method     G-T model     J-R curve    

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CFD evaluation of pressure drop across a 3-D filter housing for industrial gas turbine plants

Fidelis I. ABAM,Samuel O. EFFIOM,Olayinka S. OHUNAKIN

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 192-202 doi: 10.1007/s11708-016-0406-x

Abstract: This paper investigated the flow distribution and total pressure drop across a designed 3-D filter housingintegrated with a 3-stage filtration system using computational fluid dynamics (CFD).Although the CFD simulation result shows that small outlet flow velocity and transonic flows exist at

Keywords： computational fluid dynamics (CFD)     pressure drop     flow distribution     filter housing     gas turbine    

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Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 359-382 doi: 10.1007/s11709-015-0304-z

Abstract: This paper deals with the fatigue crack growth simulations of three-dimensional linear elastic cracks by XFEM under cyclic thermal load. Both temperature and displacement approximations are extrinsically enriched by Heaviside and crack front enrichment functions. Crack growth is modelled by successive linear extensions, and the end points of these linear extensions are joined by cubic spline segments to obtain a modified crack front. Different crack geometries such as planer, non-planer and arbitrary spline shape cracks are simulated under thermal shock, adiabatic and isothermal loads to reveal the sturdiness and versatility of the XFEM approach.

Keywords： 3-D cracks     fatigue life     Paris law     thermal load     XFEM    

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Migration of ammonium nitrogen in ion-absorbed rare earth soils during and post mining: a column study and numericalsimulation analysis

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1702-4

Abstract:

● Column experiments with an inclined slope were applied to simulate NH4–N transport.

Keywords： Ion-absorbed rare earth     Ammonium nitrogen transport     HYDRUS-2D     Numerical simulation    

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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 backwardComparison of the 2D and 3D numerical results explicitly demonstrates the inherent 3D nature of the pipingThe results clearly indicate the superiority of the presented 3D numerical model compared to the established2D approach.Moreover, the 3D numerical results enable a better understanding of the complex physical mechanism involved

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

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Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beambased on experimental and numerical analyses

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 675-689 doi: 10.1007/s11709-020-0625-4

Abstract: this article, equivalent single layer approach is utilized for dynamic finite element procedures of 3DFinally, comprehensive validations are conducted for the theory against experimental and numerical results

Keywords： composite beam     dynamic finite element     degrees of freedom coupling     experimental validation     numerical validation    

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HAPE3D—a new constructive algorithm for the 3D irregular packing problem

Xiao LIU,Jia-min LIU,An-xi CAO,Zhuang-le YAO

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 5,   Pages 380-390 doi: 10.1631/FITEE.1400421

Abstract: We propose a new constructive algorithm, called HAPE3D, which is a heuristic algorithm based on the principleHAPE3D can deal with arbitrarily shaped polyhedrons, which can be rotated around each coordinate axisThe most outstanding merit is that HAPE3D does not need to calculate no-fit polyhedron (NFP), which isa huge obstacle for the 3D packing problem.HAPE3D can also be hybridized with a meta-heuristic algorithm such as simulated annealing.

Keywords： 3D packing problem     Layout design     Simulation     Optimization     Constructive algorithm     Meta-heuristics    

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Simulation of abrasive flow machining process for 2D and 3D mixture models

Rupalika DASH,Kalipada MAITY

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 424-432 doi: 10.1007/s11465-015-0366-6

Abstract: Computational fluid dynamics (CFD) simulation was employed to accurately determine optimum parametersIn the current work, a 2D model was designed, and the flow analysis, force calculation, and materialAnother 3D model for a swaging die finishing using AFM was simulated at different viscosities of theA CFD simulation was performed by using commercially available ANSYS FLUENT.

Keywords： abrasive flow machining (AFM)     computational fluid dynamics (CFD) modeling     mixture model    

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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: the trapezoidal cutthroat flume in terminal trapezoidal channel were also obtained to validate the simulationVelocity distribution of the flume obtained from simulation analyses were compared with observed results

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

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3D finite element analysis of composite noise barrier constructed of polyurethane products

Ben DAEE,Hesham El NAGGAR

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1,   Pages 100-110 doi: 10.1007/s11709-016-0364-8

Abstract: This paper presents a numerical investigation on the structural performance of an innovative noise barrierThe experimental results are used in the current study to develop, calibrate and verify 3D finite elementThe results of numerical analysis exhibited a satisfactory agreement with the experimental outcomes forThe verified numerical models were then used to conduct a parametric study on the performance of poly-wallSimulation techniques for improvement of the numerical analysis of multi-martial 3D FE models were discussed

Keywords： 3D finite element     sound wall     rigid polyurethane foam     poly-wall     numerical model     calibration    

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Research on 1D and 2D numerical simulation of flood routing and its application of combined-regulation

Li Daming、Lin Yi、Zhou Zhihua

Strategic Study of CAE 2010, Volume 12, Issue 3,   Pages 82-89

Abstract: style="text-align: justify;">Based on the overlapped conditions on complex river network and basin, a 1Dand 2D flood routing model which is based on water-resistance structure of railways, roads, embankmentA corresponding simulation system of the 1D and 2D flood routing model was set up in consideration of

Keywords： detention basin     flood routing     1D and 2D numerical simulation     finite volume method     combined-regulation    

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3D mode discrete element method with the elastoplastic model

Wei HU, Feng JIN, Chong ZHANG, Jinting WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 57-68 doi: 10.1007/s11709-012-0139-9

Abstract: The three-dimensional mode-deformable discrete element method (3MDEM) is an extended distinct elementThe deformation of blocks is expressed by the combination of the deformation modes in 3MDEM.In this paper, the elastoplastic constitutive relationship of blocks is implemented on the 3MDEM platformThis approach is verified by two numerical examples.

Keywords： mode discrete element method     elastoplastic     numerical method     discontinuum     contact    

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Title Author Date Type Operation

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

ZHAO Qingjun, WANG Huishe, ZHAO Xiaolu, XU Jianzhong

Journal Article

Geometric optimization model for the solar cavity receiver with helical pipe at different solar radiation

Chongzhe ZOU, Huayi FENG, Yanping ZHANG, Quentin FALCOZ, Cheng ZHANG, Wei GAO

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

Ductile extension of 3-D external circumferential cracks in pipe structures

Wuchao YANG, Xudong QIAN

Journal Article

CFD evaluation of pressure drop across a 3-D filter housing for industrial gas turbine plants

Fidelis I. ABAM,Samuel O. EFFIOM,Olayinka S. OHUNAKIN

Journal Article

Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Journal Article

Migration of ammonium nitrogen in ion-absorbed rare earth soils during and post mining: a column study and numericalsimulation analysis

Journal Article

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

Kristine VANDENBOER,Vera van BEEK,Adam BEZUIJEN

Journal Article

Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beambased on experimental and numerical analyses

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Journal Article

HAPE3D—a new constructive algorithm for the 3D irregular packing problem

Xiao LIU,Jia-min LIU,An-xi CAO,Zhuang-le YAO

Journal Article

Simulation of abrasive flow machining process for 2D and 3D mixture models

Rupalika DASH,Kalipada MAITY

Journal Article

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

Danjie RAN, Wene WANG, Xiaotao HU

Journal Article

3D finite element analysis of composite noise barrier constructed of polyurethane products

Ben DAEE,Hesham El NAGGAR

Journal Article

Research on 1D and 2D numerical simulation of flood routing and its application of combined-regulation

Li Daming、Lin Yi、Zhou Zhihua

Journal Article

3D mode discrete element method with the elastoplastic model

Wei HU, Feng JIN, Chong ZHANG, Jinting WANG

Journal Article