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Simple model of sludge thickening process in secondary settlers

Yuankai ZHANG,Hongchen WANG,Lu QI,Guohua LIU,Zhijiang HE,Songzhu JIANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 319-326 doi: 10.1007/s11783-014-0758-6

Abstract: In this study, by detecting the hindered zone from the complete thickening process of activated sludgethickening velocity, , describing the potential and performance of activated sludge thickening in the hinderedzone was developed.However, sludge thickening in the compression zone was not studied because sludge in the compressionzone showed limited thickening.

Keywords： wastewater treatment plants     secondary settler     sludge thickening     sludge settling     hindered zone    

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Applying the multi-zone model in predicting the operating range of HCCI engines

Ming JIA, Maozhao XIE, Zhijun PENG,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 414-423 doi: 10.1007/s11708-010-0108-8

Abstract: In this paper, a multi-zone model is developed to predict the operating range of homogeneous charge compression

Keywords： homogeneous charge compression ignition (HCCI) engine     multi-zone     operating range    

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delamination on the stiffness of composite pipes under compressive transverse loading using cohesive zone

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1316-1323 doi: 10.1007/s11709-019-0555-1

Abstract: The stiffness test of filament wound composite pipes is simulated using cohesive zone method.

Keywords： delamination     composite pipes     stiffness test     cohesive zone method    

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The geological recognition breakthrough in Liaodong zone, which leading to the discovery of the large

Deng Yunhua

Strategic Study of CAE 2011, Volume 13, Issue 10,   Pages 13-18

Abstract:

Liaodong zone includes eastern actic region of Liaozhong sag and LiaodongBased on deep research of geological condition and analysis on dry wells again in Liaodong zone, we recognized

Keywords： Bohai Liaodong zone     JX1-1     geological recognition     large oilfield    

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effects of mismatch fracture properties in encapsulation-based self-healing concrete using cohesive-zone

Luthfi Muhammad MAULUDIN, Chahmi OUCIF, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 792-801 doi: 10.1007/s11709-020-0629-0

Abstract: ratios embedded in the mortar matrix is analyzed numerically along with their interfacial transition zone

Keywords： self-healing concrete     interfacial zone     capsule materials     cohesive elements     fracture maps    

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Experimental investigation and design of aluminum columns with longitudinal welds

Yun WU, Qilin ZHANG

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 366-373 doi: 10.1007/s11709-011-0101-2

Abstract: and the major axis by applying support except for one column (ZP1217-1) which buckled in the local zone

Keywords： aluminum alloy     longitudinal weld     heat-affected zone (HAZ)     reduced strength zone (RSZ)     buckling     column    

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Cohesive zone model-based analyses of localized leakage of segmentally lined tunnels

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 503-521 doi: 10.1007/s11709-023-0927-4

Abstract: approach for simulating the localized leakage behavior of segmentally lined tunnels based on a cohesive zone

Keywords： segmentally lined tunnel     localized leakage     cohesive element     hydraulic behavior     numerical modeling    

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Simulation of cottonseed cake melt flow in metering zone of a single screw extruder

Hong HE, Jianguo ZHOU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 263-269 doi: 10.1007/s11705-009-0276-4

Abstract: Research on the extrusion of natural polymers (food, feed, etc.) is relatively new due to the complex physicochemical transformations of raw materials, although plastics melt conveying and transport have been well studied. The structure and composition, rheological behavior as well as extrusion processing of natural polymer are much more complicated. In this study, a quasi-three-dimensional (3D) fluid flow model for non-Newtonian, non-isothermal and undeveloped temperature was developed, the model prediction being in reasonably good agreement with the experiment. Results show that the influence of moisture content, among other process variables, is the most significant, followed by screw speed. Some interaction exists between these two variables and the screw speed effect becomes marginal at high moisture contents. In addition, viscosity change in the channel was studied.

Keywords： quasi-three-dimensional     rheological     viscosity     processing     influence    

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method of rock-explosive matching in drilling and blasting based on reasonable control of the crushed zone

LengZhendong,LuWenbo,YanPeng, ChenMing,Hu Yingguo

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 28-35

Abstract: The new approach chooses explosive parameters by reasonable control of the size of crushed zone under

Keywords： drilling and blasting     crushed zone     rock-explosive matching     acoustic impedance matching    

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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: The zone model has been widely applied in control analysis of heating, ventilation and air conditioningThis paper proposed a modified zone model which is much simpler in the HVAC system simulation and has

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

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Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic Zone

Xuemei WANG,Weihua CHEN,Duohong CHEN,Zhiyong WU,Qi Fan

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 53-62 doi: 10.1007/s11783-014-0728-z

Abstract: PM data from various published sources for the years 2000 to 2010 in the Pearl River Delta Economic Zone

Keywords： long-term trends     fine particulate matter     chemical components     Pearl River Delta Economic Zone (PRDEZ)    

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Isogeometric cohesive zone model for thin shell delamination analysis based on Kirchhoff-Love shell model

Tran Quoc THAI, Timon RABCZUK, Xiaoying ZHUANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 267-279 doi: 10.1007/s11709-019-0567-x

Abstract: We present a cohesive zone model for delamination in thin shells and composite structures.The fracture process zone is modeled by interface elements with a cohesive law.

Keywords： cohesive zone model     IGA     Kirchhoff-Love model     thin shell analysis     delamination    

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fluorescence spectral characterization of soil dissolved organic matters in the fluctuating water-level zone

Fang FANG, Yan YANG, Jinsong GUO, Hong ZHOU, Chuan FU, Zhe LI

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 426-434 doi: 10.1007/s11783-010-0264-4

Abstract: investigate the fluorescent properties of soil dissolved organic matter (DOM) in the water-level-fluctuation zone

Keywords： water-level-fluctuation zone (WLFZ)     soil     dissolved organic matter (DOM)     three-dimensional fluorescence    

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Deep-seated Rupture Zone—a New Seismotectonic Style

Li Yuanjun

Strategic Study of CAE 2006, Volume 8, Issue 4,   Pages 12-18

Abstract: Historic earthguakes frequently occur along the active structure zone.

Keywords： deep-seated rupture zone     pleistoseismic generating fault     unloading     rock dynamics    

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Cell-Zone Method: An Engineering Approach to Predict Smoke Movement in Large Scale Building Fire

Hu Longhua,Huo Ran,Liy Uanzhou,Wang Haobo

Strategic Study of CAE 2003, Volume 5, Issue 8,   Pages 59-63

Abstract: scale building fire, it is improper to predict smoke descending using traditional simple two-layer zoneIn this paper, an improved method, named Cell-Zone Method, is used to solve this problem, which firstdivides the total space into some small subspaces and then uses traditional two-layer zone model inResults show that Cell-Zone Method demonstrates more applicability than traditional simple two-layerzone model in large scale building, especially in buildings having large scale in one direction.

Keywords： large scale building     smoke movement     cell-zone method     zone-model    

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Title Author Date Type Operation

Simple model of sludge thickening process in secondary settlers

Yuankai ZHANG,Hongchen WANG,Lu QI,Guohua LIU,Zhijiang HE,Songzhu JIANG

Journal Article

Applying the multi-zone model in predicting the operating range of HCCI engines

Ming JIA, Maozhao XIE, Zhijun PENG,

Journal Article

delamination on the stiffness of composite pipes under compressive transverse loading using cohesive zone

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Journal Article

The geological recognition breakthrough in Liaodong zone, which leading to the discovery of the large

Deng Yunhua

Journal Article

effects of mismatch fracture properties in encapsulation-based self-healing concrete using cohesive-zone

Luthfi Muhammad MAULUDIN, Chahmi OUCIF, Timon RABCZUK

Journal Article

Experimental investigation and design of aluminum columns with longitudinal welds

Yun WU, Qilin ZHANG

Journal Article

Cohesive zone model-based analyses of localized leakage of segmentally lined tunnels

Journal Article

Simulation of cottonseed cake melt flow in metering zone of a single screw extruder

Hong HE, Jianguo ZHOU,

Journal Article

method of rock-explosive matching in drilling and blasting based on reasonable control of the crushed zone

LengZhendong,LuWenbo,YanPeng, ChenMing,Hu Yingguo

Journal Article

A modified zone model for estimating equivalent room thermal capacity

Hua CHEN, Xiaolin WANG

Journal Article

Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic Zone

Xuemei WANG,Weihua CHEN,Duohong CHEN,Zhiyong WU,Qi Fan

Journal Article

Isogeometric cohesive zone model for thin shell delamination analysis based on Kirchhoff-Love shell model

Tran Quoc THAI, Timon RABCZUK, Xiaoying ZHUANG

Journal Article

fluorescence spectral characterization of soil dissolved organic matters in the fluctuating water-level zone

Fang FANG, Yan YANG, Jinsong GUO, Hong ZHOU, Chuan FU, Zhe LI

Journal Article

Deep-seated Rupture Zone—a New Seismotectonic Style

Li Yuanjun

Journal Article

Cell-Zone Method: An Engineering Approach to Predict Smoke Movement in Large Scale Building Fire

Hu Longhua,Huo Ran,Liy Uanzhou,Wang Haobo

Journal Article