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Effect of Radial Porosity Oscillation on the Thermal Performance of Packed Bed Latent Heat Storage Article

H. B. Liu, C. Y. Zhao

Engineering 2021, Volume 7, Issue 4,   Pages 515-525 doi: 10.1016/j.eng.2020.05.020

Abstract: porosity oscillation.porosity oscillation.corresponding relationships between the arrangement of capsules and porosity oscillation were identifiedThe oscillating distribution of radial porosity led to a non-uniform distribution of heat transfer fluidThe results showed that different diameter ratios correspond to different radial porosity distributions

Keywords： Packed bed latent heat storage     Radial porosity oscillation     Fluid flow     Heat transfer     Diameter ratio    

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Conversion of polyethylene to gasoline: Influence of porosity and acidity of zeolites

Frontiers in Energy   Pages 763-774 doi: 10.1007/s11708-023-0897-1

Abstract: Herein a series of microporous and mesoporous zeolites were used to study the influence of porosity andThe effect of porosity and acidity on catalytic performance of zeolites was evaluated, which clearly

Keywords： plastics conversion     polyethylene     zeolites     acidity     porosity    

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A time−space porosity computational model for concrete under sulfate attack

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0985-7

Abstract: Nevertheless, little effort has been invested in exploring the temporal and spatial development of the porosityThis study proposes a mechanical–chemical model to simulate the spatiotemporal distribution of the porositycorrosion damage and cement hydration on the diffusion of sulfate ions, the expansion deformation and porosityThe proposed model can forecast and assess the porosity of concrete covers and provide a credible approach

Keywords： expansion deformation     porosity     internal expansion stress     external sulfate attack     mechanical–chemical    

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Tuning porosity of coal-derived activated carbons for CO2 adsorption

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1345-1354 doi: 10.1007/s11705-022-2155-1

Abstract: A simple method was developed to tune the porosity of coal-derived activated carbons, which provided

Keywords： coal-derived activated carbons     porosity     CO2 adsorption     molecular dynamics    

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Experimental studies on the influence of porosity on membrane absorption process

GAO Jian, REN Zhongqi, ZHANG Zeting, ZHANG Weidong

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 4,   Pages 385-389 doi: 10.1007/s11705-007-0070-0

Abstract: cylinder pore) and membrane thickness do not affect the membrane absorption process, and the membrane porosityHowever, the influence of porosity on the membrane absorption process became visible for fast mass transferThe results show that the influence of membrane porosity on mass transfer relates to flow condition,

Keywords： de-ionized     · L     different     membrane porosity     CO    

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Calculation method of radial stress and deformation on conic threaded connections with interference fit

Shoujun CHEN, Qiang LI, Qi AN,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 302-307 doi: 10.1007/s11465-010-0018-9

Abstract: This paper presents a calculation method for radial stress distribution and deformation on conic threadedThe model offers a new way of calculating the radial stress and deformation on conic thread connections

Keywords： conic threaded connections     interference fit     radial stress     deformation     finite element analysis (FEA)    

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Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for

Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 248-257 doi: 10.1007/s11705-019-1853-9

Abstract: Hierarchical ZSM-5 zeolite with radial mesopores is controllably synthesized using piperidine in a NaOHIn this manner, radial mesopores are formed in the ZSM-5 zeolite with a maximal preservation of the microporesThe incorporation of the radial mesopores results in micropores that are interconnected which shortened

Keywords： hierarchical ZSM-5 zeolite     protective desilication     piperidine     radial mesopores     benzene alkylation    

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Numerical analysis of strongly nonlinear oscillation systems using He’s max-min method

H. BABAZADEH, G. DOMAIRRY, A. BARARI, R. AZAMI, A. G. DAVODI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 435-441 doi: 10.1007/s11465-011-0243-x

Abstract:

Nonlinear functions are crucial points and terms in engineering problems. Actual and physical problems can be solved by solving and processing such functions. Thus, most scientists and engineers focus on solving these equations. This paper presents a novel method called the max-min method for presenting an accurate approximate analytical solution to strong nonlinear oscillators. It can solve many linear or nonlinear differential equations without the tangible restriction of sensitivity to the degree of the nonlinear term. It is also quite convenient due to the reduction in the size of calculations. The algorithm suggests a promising approach and is systematically illustrated step by step.

Keywords： min-max method     nonlinear oscillation     duffing equation     mathematical pendulum     He’s energy balance method    

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Parametric oscillation of cables and aerodynamic effect

Yong XIA, Jing ZHANG, Youlin XU, Yozo FUJINO,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 321-325 doi: 10.1007/s11709-010-0028-z

Abstract: This paper addresses the aerodynamic effect on the nonlinear oscillation, particularly parametric vibration

Keywords： parametric vibration     cables     cable-stayed bridge     nonlinear vibration    

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Evaluation of the influence of El Niño–Southern Oscillation on air quality in southern China from long-term

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1460-0

Abstract:

•Strong ENSO influence on AOD is found in southern China region.

Keywords： El Niño–Southern Oscillation     Aerosol concentration     Aerosol particle size     Contribution separation    

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Easily-manufactured paper-based materials with high porosity for adsorption/separation applications in

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 830-839 doi: 10.1007/s11705-022-2267-7

Abstract: As a pore-forming agent, calcium citrate increased the porosity of the paper-based material from 30%

Keywords： adsorption     oil–water separation     underwater superoleophobicity     wastewater treatment    

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Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 8-8 doi: 10.1007/s11465-021-0664-0

Abstract: With the widespread application of legged robot in various fields, the demand for a robot with high locomotion and manipulation ability is increasing. Adding an extra arm is a useful but general method for a legged robot to obtain manipulation ability. Hence, this paper proposes a novel hexapod robot with two integrated leg–arm limbs that obtain dexterous manipulation functions besides locomotion ability without adding an extra arm. The manipulation modes can be divided into coordinated manipulation condition and single-limb manipulation condition. The former condition mainly includes fixed coordinated clamping case and fixed coordinated shearing case. For the fixed coordinated clamping case, the degrees of freedom (DOFs) analysis of equivalent parallel mechanism by using screw theory and the constraint equation of two integrated limbs are established. For the fixed coordinated shearing case, the coordinated working space is determined, and an ideal coordinated manipulation ball is presented to guide the coordinated shearing task. In addition, the constraint analysis of two adjacent integrated limbs is performed. Then, mobile manipulation with one integrated leg–arm limb while using pentapod gait is discussed as the single-limb manipulation condition, including gait switching analysis between hexapod gait and pentapod gait, different pentapod gaits analysis, and a complex six-DOF manipulation while walking. Corresponding experiments are implemented, including clamping tasks with two integrated limbs, coordinated shearing task by using two integrated limbs, and mobile manipulation with pentapod gait. This robot provides a new approach to building a multifunctional locomotion platform.

Keywords： leg–arm integration     hexapod robot     fixed coordinated manipulation     mobile manipulation    

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Comparison of optimal capacitor placement methods in radial distribution system with load growth and

Veera Venkata Satya Naryana MURTY, Ashwani KUMAR

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 197-213 doi: 10.1007/s11708-013-0249-7

Abstract: sensitivity (PLS) index-based approach is proposed to determine the optimal location of the capacitors in the radial

Keywords： load growth     load models     reactive power compensation     radial distribution system     power loss index (PLI)    

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A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 219-230 doi: 10.1007/s11465-012-0320-9

Abstract:

This article focuses on the dynamic index and performance of a radial symmetric six-legged robot.

Keywords： six-legged robots     dynamic modeling     performance index    

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The ITZ microstructure, thickness, porosity and its relation with compressive and flexural strength of

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 191-201 doi: 10.1007/s11709-021-0792-y

Abstract: consequences to the compressive (Fc) and flexural strength (Ff), and porosity

Keywords： cement fineness     interfacial transition zone     compressive and flexural strength    

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Title Author Date Type Operation

Effect of Radial Porosity Oscillation on the Thermal Performance of Packed Bed Latent Heat Storage

H. B. Liu, C. Y. Zhao

Journal Article

Conversion of polyethylene to gasoline: Influence of porosity and acidity of zeolites

Journal Article

A time−space porosity computational model for concrete under sulfate attack

Journal Article

Tuning porosity of coal-derived activated carbons for CO2 adsorption

Journal Article

Experimental studies on the influence of porosity on membrane absorption process

GAO Jian, REN Zhongqi, ZHANG Zeting, ZHANG Weidong

Journal Article

Calculation method of radial stress and deformation on conic threaded connections with interference fit

Shoujun CHEN, Qiang LI, Qi AN,

Journal Article

Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for

Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang

Journal Article

Numerical analysis of strongly nonlinear oscillation systems using He’s max-min method

H. BABAZADEH, G. DOMAIRRY, A. BARARI, R. AZAMI, A. G. DAVODI

Journal Article

Parametric oscillation of cables and aerodynamic effect

Yong XIA, Jing ZHANG, Youlin XU, Yozo FUJINO,

Journal Article

Evaluation of the influence of El Niño–Southern Oscillation on air quality in southern China from long-term

Journal Article

Easily-manufactured paper-based materials with high porosity for adsorption/separation applications in

Journal Article

Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration

Journal Article

Comparison of optimal capacitor placement methods in radial distribution system with load growth and

Veera Venkata Satya Naryana MURTY, Ashwani KUMAR

Journal Article

A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Journal Article

The ITZ microstructure, thickness, porosity and its relation with compressive and flexural strength of

Journal Article