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Numerical Study on the Parabolic Mild-slope Equation

Shen Yongming,Zheng Yonghong,Wu Xiuguang

Strategic Study of CAE 2004, Volume 6, Issue 3,   Pages 30-35

Abstract:

Two kinds of parabolic mild-slope equations are studied systematically.These results can give some theoretical guidance to the applications of parabolic mild slope equations

Keywords： parabolic mild-slope equation     numerical study     wave    

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Numerical Simulation of Pollutants Movement in Coastal Surf Zone

Tang Jun,Shen Yongming and Qiu Dahong

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 63-68

Abstract: Based on parabolic mild slope equation for wave propagating in mild slope zones, the nearshore currents

Keywords： parabolic mild slope equation     surf zone     wave radiation stress     longshore currents     pollutants    

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Numerical Simulation of the Hyperbolic Mild Slope Equation

Tang Jun,Shen Yongming,Qiu Dahong

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 70-74

Abstract:

The hyperbolic mild slope equation has been widely used as an effectivegrid system that collocated in time and staged in space has been used to discretize the hyperbolic mildslope equation and two examples have been used to validate the numerical model.numerical model used in the paper can be effectively used in the numerical simulation of the hyperbolic mildslope equation.

Keywords： wave model     hyperbolic mild slope equation     numerical simulation    

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including double antibiotic scaffolds: synthesis, simulation and adsorption for anticorrosion effect on mild

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 167-182 doi: 10.1007/s11705-022-2199-2

Abstract: computation revealed that TCs presented smaller HOMO-LUMO energy gaps and larger binding energy levels on mildThe anticorrosion of the studied compounds for mild steel in HCl solution was investigated by electrochemistry

Keywords： branched compounds     floxacin scaffold     mild steel     anticorrosion     environmentally benign    

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Numerical study of conduction and radiation heat losses from vacuum annulus in parabolic trough receivers

Dongqiang LEI, Yucong REN, Zhifeng WANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1048-1059 doi: 10.1007/s11708-020-0670-7

Abstract: Parabolic trough receiver is a key component to convert solar energy into thermal energy in the parabolic

Keywords： parabolic trough receiver     vacuum annulus     rarefied gas     DSMC (direct simulation Monte Carlo)     heat loss    

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Potential of performance improvement of concentrated solar power plants by optimizing the parabolic trough

Honglun YANG, Qiliang WANG, Jingyu CAO, Gang PEI, Jing LI

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 867-881 doi: 10.1007/s11708-020-0707-y

Abstract: This paper proposes a comprehensive thermodynamic and economic model to predict and compare the performance of concentrated solar power plants with traditional and novel receivers with different configurations involving operating temperatures and locations. The simulation results reveal that power plants with novel receivers exhibit a superior thermodynamic and economic performance compared with traditional receivers. The annual electricity productions of power plants with novel receivers in Phoenix, Sevilla, and Tuotuohe are 8.5%, 10.5%, and 14.4% higher than those with traditional receivers at the outlet temperature of 550°C. The levelized cost of electricity of power plants with double-selective-coated receivers can be decreased by 6.9%, 8.5%, and 11.6%. In Phoenix, the optimal operating temperature of the power plants is improved from 500°C to 560°C by employing a novel receiver. Furthermore, the sensitivity analysis of the receiver heat loss, solar absorption, and freeze protection temperature is also conducted to analyze the general rule of influence of the receiver performance on power plants performance. Solar absorption has a positive contribution to annual electricity productions, whereas heat loss and freeze protection temperature have a negative effect on electricity outputs. The results indicate that the novel receiver coupled with low melting temperature molten salt is the best configuration for improving the overall performance of the power plants.

Keywords： concentrated solar power     parabolic trough receiver     heat loss     solar energy     annual performance    

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Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 433-438 doi: 10.1007/s11465-012-0336-1

Abstract: The mechanical properties except the Poisson’s ratio are assumed to obey the parabolic variations

Keywords： thick-walled spherical vessels     heterogeneous materials     FGM     FEM     parabolic varying properties    

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Thermal and hydraulic characteristics of a large-scaled parabolic trough solar field (PTSF) under cloud

Linrui MA, Zhifeng WANG, Ershu XU, Li XU

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 283-297 doi: 10.1007/s11708-019-0649-4

Abstract: To better understand the characteristics of a large-scaled parabolic trough solar field (PTSF) under

Keywords： parabolic trough solar field (PTSF)     thermal hydraulic model     cloud passages     transients    

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Selective epoxidation of linear terminal olefins with metalloporphyrins under mild conditions

Xiaoguang BAI, Yuanbin SHE

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 310-313 doi: 10.1007/s11705-009-0168-7

Abstract: The epoxidation of linear terminal olefins with metalloporphyrins in the presence of dioxygen and isobutyraldehyde under ambient temperature and atmospheric pressure was investigated. The results show that all olefins could be smoothly converted to epoxides with high selectivities (70%-90%). For the metalloporphyrins with different catalytic activities within 1-hexene epoxidation in the order of Fe>Mn>Co, T( -Cl)PPFe(Ⅲ)Cl was most effective, with a 41.7% yield and 80.2% selectivity of 1,2-epoxyhexane. Various amounts of catalyst were investigated, and it was found that with only 10 ppm catalyst the yield of 1,2-epoxyhexane and turnover number (TON) could reach up to 41.9% and 41859, respectively.

Keywords： metalloporphyrins     olefins     dioxygen     epoxidation    

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Solvent-free mechanochemical mild oxidation method to enhance adsorption properties of chitosan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1416-4

Abstract:

• Solvent-free chitosan oxidation is obtained by rapid mechanochemical reaction.

Keywords： Chitosan     High energy ball milling     Mechanochemistry     Oxidation    

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Bioengineering protection mechanism of city rock slope and its laboratory test

Desong JIANG, Minghua ZHAO, Chong JIANG,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 414-421 doi: 10.1007/s11709-009-0055-9

Abstract: Based on the features of rock slope bioengineering protection, the ecology protection mechanism of theurban rock slope was discussed with the mechanics effect of plants and rock slope, and the reinforcementaction mechanism of rock slope by plant root system was analyzed as well.Moreover, the side slope rainfall interception, the runoff lagging, the soil antiseepage, and the soilThe antiwashing capability per unit area has a critical slope angle of about 25°.

Keywords： indoor     engineering project     protection mechanism     different     runoff lagging    

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Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 772-783 doi: 10.1007/s11705-022-2280-x

Abstract: crystallinity and a four-coordinate Ti framework is critical for efficient catalytic oxidation reaction under mild

Keywords： size-controlled TS-1     crystal modifier     steam-assisted crystallization     epoxidation    

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Efficiency of scalar and vector intensity measures for seismic slope displacements

Gang WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 44-52 doi: 10.1007/s11709-012-0138-x

Abstract: Although no single intensity measure is efficient enough for all slope conditions, the spectral accelerationat 1.5 times of the initial slope period and Arias intensity of the input motion are found to be thecharacteristics of the ground motion and thus significantly improve the efficiency over a wide range of slopethe spectral accelerations at multiple spectral periods achieve high efficiency for a wide range of slopeprediction models as well as the ground motion selection criteria for time domain analysis of seismic slope

Keywords： seismic slope displacements     intensity measures     empirical prediction    

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Evaluation and prediction of slope stability using machine learning approaches

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 821-833 doi: 10.1007/s11709-021-0742-8

Abstract: In this paper, the machine learning (ML) model is built for slope stability evaluation and meets thehigh precision and rapidity requirements in slope engineering.of this study includes six characteristics, namely unit weight, cohesion, internal friction angle, slopeangle, slope height, and pore water pressure ratio.Also, the SVM-poly method is used to analyze the susceptibility of slope parameters.

Keywords： slope stability     factor of safety     regression     machine learning     repeated cross-validation    

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Regenerative braking control strategy in mild hybrid electric vehicles equipped with automatic manual

QIN Datong, YE Ming, LIU Zhenjun

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 364-369 doi: 10.1007/s11465-007-0064-0

Abstract: To recover the vehicle s kinetic energy maximally, braking shift rules for a mild hybrid electric vehicle

Keywords： SOC     Braking     battery     regenerative braking     starter/generator    

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Title Author Date Type Operation

Numerical Study on the Parabolic Mild-slope Equation

Shen Yongming,Zheng Yonghong,Wu Xiuguang

Journal Article

Numerical Simulation of Pollutants Movement in Coastal Surf Zone

Tang Jun,Shen Yongming and Qiu Dahong

Journal Article

Numerical Simulation of the Hyperbolic Mild Slope Equation

Tang Jun,Shen Yongming,Qiu Dahong

Journal Article

including double antibiotic scaffolds: synthesis, simulation and adsorption for anticorrosion effect on mild

Journal Article

Numerical study of conduction and radiation heat losses from vacuum annulus in parabolic trough receivers

Dongqiang LEI, Yucong REN, Zhifeng WANG

Journal Article

Potential of performance improvement of concentrated solar power plants by optimizing the parabolic trough

Honglun YANG, Qiliang WANG, Jingyu CAO, Gang PEI, Jing LI

Journal Article

Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Journal Article

Thermal and hydraulic characteristics of a large-scaled parabolic trough solar field (PTSF) under cloud

Linrui MA, Zhifeng WANG, Ershu XU, Li XU

Journal Article

Selective epoxidation of linear terminal olefins with metalloporphyrins under mild conditions

Xiaoguang BAI, Yuanbin SHE

Journal Article

Solvent-free mechanochemical mild oxidation method to enhance adsorption properties of chitosan

Journal Article

Bioengineering protection mechanism of city rock slope and its laboratory test

Desong JIANG, Minghua ZHAO, Chong JIANG,

Journal Article

Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild

Journal Article

Efficiency of scalar and vector intensity measures for seismic slope displacements

Gang WANG

Journal Article

Evaluation and prediction of slope stability using machine learning approaches

Journal Article

Regenerative braking control strategy in mild hybrid electric vehicles equipped with automatic manual

QIN Datong, YE Ming, LIU Zhenjun

Journal Article