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Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 694-701 doi: 10.1007/s11783-014-0732-3

Abstract: Full-scale experiments have been carried out to adapt the activated sludge model ASM2d to include theCorresponding parameters in the ASM2d and the secondary settler models, included in the Benchmark SimulationModel No 1 (BSM1), have been modified to take the metal influence into consideration.

Keywords： chemical precipitation     benchmark simulation model     phosphorus removal     respiratory rate     sludge settling     activated sludge model    

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Model reduction of contact dynamics simulation using a modified Lyapunov balancing method

Jianxun LIANG, Ou MA, Caishan LIU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 383-391 doi: 10.1007/s11465-011-0244-9

Abstract: However, such a simulation remains very inefficient because very small integration time step must beAlthough many model reduction techniques have been available to improve the efficiency of finite elementThis paper presents a model reduction approach for finite-element based multibody contact dynamics simulationAn example is presented to demonstrate that, by applying the model reduction the simulation process is

Keywords： contact dynamics     dynamic simulation     model reduction     finite element method    

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Model test and discrete element method simulation of shield tunneling face stability in transparent clay

Huayang LEI, Yajie ZHANG, Yao HU, Yingnan LIU

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 147-166 doi: 10.1007/s11709-020-0704-6

Abstract: transparent clay with properties similar to those of Tianjin clay is prepared and a new transparent clay modeltest apparatus is developed to overcome the “black box” problem in the traditional model test.A series of transparent clay model tests is performed to investigate the active failure mode, influence

Keywords： shield tunneling face     stability     transparent clay     model test     numerical simulation    

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Method for rating energy performance of public buildings

Jincheng XING,Youli LI,Jihong LING,Huiyang YU,Liwen WANG

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 379-385 doi: 10.1007/s11708-014-0328-4

Abstract: discussed a comparative study of several state-of-art methods for determining building energy consumption benchmarkA new approach, which combined the idea of “building benchmark” and “operational benchmark” in its ratingBesides, the calculation of benchmarks of the reference building model and real building model usingFurthermore, the simulation results of the reference building model were taken as the baseline to divide

Keywords： energy consumption benchmark     energy efficiency benchmark     energy performance level    

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Reverse engineering in the construction of numerical simulation oriented patient-specific model of stented

Xianlong MENG, Wenyu FU, Yun ZHANG, Aike QIAO,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 328-335 doi: 10.1007/s11465-010-0026-9

Abstract: analyze hemodynamics, it is necessary to investigate the approaches to the reconstruction of a numerical simulation-orientedto reconstruct a solid model using CAD software Geomagic and Pro/E, and a simplified model of stentThe finite element model particularly suitable for numerical simulation of hemodynamics was obtained.Hemodynamic simulation was performed, using the constructed finite element model to verify its applicabilityreconstruction as a reference in hemodynamic simulation investigations.

Keywords： reverse engineering     aortic arch aneurysm     surface model     meshing     finite element model    

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Next-Generation Database Benchmark for Financial Scenarios

Jing Yinan, Zhang Hanbing, Li Zhixin , Wang Xiaoyang , Wu Jie , Chai Hongfeng

Strategic Study of Chinese Academy of Engineering 2022, Volume 24, Issue 4,   Pages 121-132 doi: 10.15302/J-SSCAE-2022.04.014

Abstract: Therefore, to build a nextgeneration database benchmark that can meet the requirements of financial

Keywords： financial industry     bank     financial data     database     benchmark    

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Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 201-207 doi: 10.1007/s11708-017-0451-0

Abstract: Numerical simulation on flow of ice slurry in horizontal straight tubes was conducted in this paper tothe ice packing factors (IPF) and the flow velocity of ice slurry on pressure loss by using numerical simulationFurthermore, it was found that the deviation between the simulation results and experimental data couldThis confirmed the reliability of the simulation model.It could also be concluded that future rheological model of ice slurry should be considered in three

Keywords： ice slurry     horizontal tubes     numerical simulation     pressure drop     viscosity model    

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A biofilter model for simultaneous simulation of toluene removal and bed pressure drop under varied inlet

Jinying XI,Insun KANG,Hongying HU,Xian ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 554-562 doi: 10.1007/s11783-014-0671-z

Abstract: In this study, a biofiltration model including the effect of biomass accumulation and inert biomass growthAccording to sensitivity analysis based on the model, the VOCs removal efficiency of the biofilter isdrop satisfactorily fit the experimental data under varied inlet toluene loadings, which indicates the modelBased on the model, the effect of mass-transfer parameters on VOCs removal and the stable-run time ofThe results demonstrate that the model can function as a good tool to evaluate the effect of biomass

Keywords： Volatile Organic Compounds (VOCs)     biofilters     modelling     biomass accumulation     pressure drop    

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Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 687-699 doi: 10.1007/s11708-021-0773-9

Abstract: In this paper, based on the mixture flow model, an optimized six-flux model is first established andIt is found that, at the outlet of the reactor, the optimized six-flux model has better performances

Keywords： photocatalytic hydrogen photoreactor     nume- rical simulation     solar energy     flow model     radiation model    

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Modeling and simulation of normal and hemiparetic gait

Lely A. LUENGAS,Esperanza CAMARGO,Giovanni SANCHEZ

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 233-241 doi: 10.1007/s11465-015-0343-0

Abstract: Here we present a new model that is capable of reproducing the properties of walking, normal and pathologicalAnthropometric data of adult person are used by simulation, and it is possible to use anthropometricQuantitative comparisons of the model predictions with gait measurements show that the model can reproduce

Keywords： bipedal gait     biomechanics     dynamic walking     gait model     human gait     hemiparetic human gait    

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Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 506-514 doi: 10.1007/s11705-010-0508-7

Abstract: The Speziale, Sarkar and Gatski Reynolds Stress Model (SSG RSM) is utilized to simulate the fluid dynamicsCFD model data in terms of the flow field, trailing vortex, and the power number are compared with publishedThe power number predicted is quite close to the designed value, which demonstrates that this model canTherefore, the simulation by using a combination of SSG RSM and MRF impeller rotational model can accuratelymodel turbulent fluid flow in the stirred tank, and it offers an alternative method for design and optimisation

Keywords： stirred tank     fluid dynamics     numerical simulation     SSG Reynolds Stress Model     MRF    

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Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 909-920 doi: 10.1007/s11705-021-2100-8

Abstract: An energy minimum multiscale model was adjusted to simulate the mesoscale structure of the flue gas desulfurizationThe obtained results revealed that the spout morphology simulated by the adjusted mesoscale drag modelIn addition, more thorough gas radial mixing was achieved using the adjusted mesoscale drag model.The mass fraction of water in the gas mixture at the outlet determined by the heterogeneous drag modelwas 1.5 times higher than that obtained by the homogeneous drag model during the simulation of water

Keywords： adjusted mesoscale drag model     particle image velocimetry     water vaporization     desulfurization reaction     numerical simulation    

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A modified zone model for estimating equivalent room thermal capacity

Hua CHEN, Xiaolin WANG

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 351-357 doi: 10.1007/s11708-013-0254-x

Abstract: This paper proposed a modified zone model which is much simpler in the HVAC system simulation and hasthe similar accuracy to the complicated simulation model.The efficacy of the proposed model was demonstrated by comparing it with the complicated model — heatThe predicted results from the proposed model well agreed with those from the complicated simulation.The proposed model can then make the HVAC system dynamic simulation much faster and more acceptable for

Keywords： room model     thermal network analysis     transfer function     heating     ventilation and air conditioning (HVAC)system simulation    

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Evaluating the Level of Provincial Ecological Civilization Development in China Using the Double-Benchmark

Xie Yuxi,Zhang Linbo,Luo Shanghua,Yang Jiao,Li Fen and Wang Dewang

Strategic Study of Chinese Academy of Engineering 2017, Volume 19, Issue 4,   Pages 60-66 doi: 10.15302/J-SSCAE-2017.04.010

Abstract: comparison and improvement of existing data standardization methods, this study puts forward a double-benchmark

Keywords： ecological civilization development level     provincial ecological civilization evaluation     double-benchmarkprogressive method     single-benchmark progressive method     maximum-difference normalization method    

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Concurrent fatigue crack growth simulation using extended finite element method

Zizi LU, Yongming LIU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 339-347 doi: 10.1007/s11709-010-0078-2

Abstract: In this paper, a concurrent simulation framework for fatigue crack growth analysis is proposed using(X-FEM) for fatigue crack growth simulation.The X-FEM greatly facilitates crack growth simulation without remeshing requirements ahead of the crackThe small time scale fatigue model is integrated into the numerical simulation algorithm for concurrentModel predictions are compared with available experimental observations for model validation.

Keywords： small time scale model     extended finite element method (X-FEM)     crack growth     multiaxial    

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Title Author Date Type Operation

Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Journal Article

Model reduction of contact dynamics simulation using a modified Lyapunov balancing method

Jianxun LIANG, Ou MA, Caishan LIU

Journal Article

Model test and discrete element method simulation of shield tunneling face stability in transparent clay

Huayang LEI, Yajie ZHANG, Yao HU, Yingnan LIU

Journal Article

Method for rating energy performance of public buildings

Jincheng XING,Youli LI,Jihong LING,Huiyang YU,Liwen WANG

Journal Article

Reverse engineering in the construction of numerical simulation oriented patient-specific model of stented

Xianlong MENG, Wenyu FU, Yun ZHANG, Aike QIAO,

Journal Article

Next-Generation Database Benchmark for Financial Scenarios

Jing Yinan, Zhang Hanbing, Li Zhixin , Wang Xiaoyang , Wu Jie , Chai Hongfeng

Journal Article

Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Journal Article

A biofilter model for simultaneous simulation of toluene removal and bed pressure drop under varied inlet

Jinying XI,Insun KANG,Hongying HU,Xian ZHANG

Journal Article

Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Journal Article

Modeling and simulation of normal and hemiparetic gait

Lely A. LUENGAS,Esperanza CAMARGO,Giovanni SANCHEZ

Journal Article

Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

Journal Article

Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Journal Article

A modified zone model for estimating equivalent room thermal capacity

Hua CHEN, Xiaolin WANG

Journal Article

Evaluating the Level of Provincial Ecological Civilization Development in China Using the Double-Benchmark

Xie Yuxi,Zhang Linbo,Luo Shanghua,Yang Jiao,Li Fen and Wang Dewang

Journal Article

Concurrent fatigue crack growth simulation using extended finite element method

Zizi LU, Yongming LIU,

Journal Article