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Development of an axial-type fan with an optimization method

Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 414-422 doi: 10.1007/s11708-009-0038-5

Abstract: a flowrate of 416.6m/min is developed using an optimization technique based on the gradient methodthe optimization of the fan blade, a three-dimensional axial-type fan blade is designed based on the free-vortexmethod along the radial direction.Through these procedures, an initial axial-fan blade designed by the free vortex method is modified toThe experimental and numerical tests show that this optimization method can improve the efficiency and

Keywords： axial-type fan     gradient method     free-vortex method     design variable     total pressure     static pressure     operating    

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Investigation of vortical flows over oscillating body using fast Lagrangian vortex method

Baoshan ZHU ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 297-306 doi: 10.1007/s11708-009-0010-4

Abstract: A computational method facilitating long-time and high-resolution unsteady vortical flows is developedwith the advantages of the discrete vortex methods.The effectiveness of the present method is examined by comparing the numerical results of unsteady separatedInteresting results about vortex shedding patterns and lock-in characteristics are provided for the thin

Keywords： unsteady vortical flows     fast vortex method     vortex shedding     rotational oscillation     thin cambered blade    

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Dynamic analysis of free-surface thin film flows driven by gravity over undulated substrate

Zhaomiao LIU, Xin LIU, Guobin WANG, Hong LIAO,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 219-225 doi: 10.1007/s11465-010-0010-4

Abstract: This paper studies thin film flows with free surfaces driven by gravity through two types of undulatedThe substrate plane is fixed and inclined to a certain angle and the flow with a free surface.Through finite element method (FEM), commenced from Navier-Stokes equations and continuity equation,the exact numerical results of free-surface film flows are obtained through discretization solution toprocess are visualized via post-proceeding, and the streamlines separation, the onset and evolution of vortex

Keywords： waviness     triangle height     film thickness     streamlines separation     vortex    

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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

Keywords： Chitosan     High energy ball milling     Mechanochemistry     Oxidation    

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An overview of vortex-induced vibration (VIV) of bridge decks

Teng WU, Ahsan KAREEM

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 335-347 doi: 10.1007/s11709-012-0179-1

Abstract: A brief overview of vortex-induced vibration (VIV) of circular cylinders is first given as most of VIV

Keywords： vortex-induced vibration (VIV)     Volterra series     bridge    

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Numerical Simulation of Rotor/Stator Interaction in Turbomachinery by Use of a Disturbance Vortex Method

Chen Maozhang,Peng Bo

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 15-23

Abstract:

A disturbance vortex method for simulating rotor/stator interaction in turbomachinery was developedThis method has some obvious advantages in simulating unsteady flow in turbomachinery, such as understandableconsideration with the aim to lay down a solid mathematical and physical foundation for the disturbance vortexmethod.From the simulation results it can seen that the disturbance vortex method still converges fast even

Keywords： turbomachinery     rotor/stator interaction     disturbance vortex method     compressible flow     unsteady flow    

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Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 480-501 doi: 10.1007/s11709-017-0435-5

Abstract: Bridge decks are created in ABAQUS CFD program with the support of MATLAB codes to simulate and analyze vortexTwo benchmarks from the literature Von Karman and Dyrbye and Hansen are considered to validate the vortexLatin hypercube experimental method is dedicated to generate the surrogate models for the kinetic energyperformed very well in revealing the rational effects and the roles of each parameter in the generation of vortexshedding and predicting vortex induced vibration of the deck.

Keywords： vortex induced vibration     reynolds number     kinetic energy     vorticity     latin hypercube sampling    

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Design and modeling of a free-piston engine generator

Frontiers in Energy   Pages 811-821 doi: 10.1007/s11708-022-0848-2

Abstract: Free-piston engine generators (FPEGs) can be applied as decarbonized range extenders for electric vehicles

Keywords： free-piston engine generator     linear permanent magnet synchronous machine     system design     numerical model     finite element method    

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Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 405-419 doi: 10.1007/s11709-015-0310-1

Abstract: The free vibration analysis of cracked thin plates via a quasi-convex coupled isogeometric-meshfree methodSubsequently, this approach is exploited to study the free vibration analysis of cracked plates, in whichThe efficacy of the present method is illustrated through several numerical examples.

Keywords： meshfree method     isogeometric analysis     quasi-convex isogeometric-meshfree method     free vibration     cracked    

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Semi-analytical approach for free vibration analysis of cracked beams resting on two-parameter elastic

Alborz MIRZABEIGY,Firooz BAKHTIARI-NEJAD

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 191-202 doi: 10.1007/s11465-014-0293-y

Abstract:

In present study, free vibration of cracked beams resting on two-parameter elastic foundation withAfter governing the equations of motion, the differential transform method (DTM) has been served to determineSince this paper deals with general problem, the derived formulation has capability for analyzing free

Keywords： free vibration     cracked beam     elastic foundation     restrained ends     differential transform method    

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An assessment of China-Japan-Korea Free Trade Agreement’s economic and environmental impacts on China

Zhaoyang LIU, Xianqiang MAO, Wei TANG, Tao HU, Peng SONG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 849-859 doi: 10.1007/s11783-012-0432-9

Abstract: and the Republic of Korea (Korea) are conducting a government-commissioned feasibility study on the FreeTrade Agreement among the three countries (CJKFTA) to form a regional free trade zone in East Asia.Following the Chain Reaction Assessment Method that integrates and links the elements of trade, production

Keywords： Free Trade Agreement     Strategic Environmental Assessment     Chain Reaction Assessment Method     Computable General    

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Numerical investigation and analysis of heat transfer enhancement in channel by longitudinal vortex based

TAO Wenquan, WU Junmei

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 71-78 doi: 10.1007/s11708-008-0001-x

Abstract: The effects of Reynolds number (from 800 to 3 000), the attack angle of vortex generator (from 15° to90°) and the shape of vortex generator were examined.The longitudinal vortex improves the field synergy of the large downstream region of longitudinal vortexregion near vortex generator.vortex can only enhance the local heat transfer.

Keywords： inherent mechanism     integral     surface     rectanglar     longitudinal    

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Transversal tube pitch effects on local heat transfer characteristics of the flat tube bank fin mounted vortex

Liangbi WANG, Zhimin LIN, Kangjie SUN, Yuanxin DONG, Song LIU, Yongheng ZHANG,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 333-345 doi: 10.1007/s11708-009-0061-6

Abstract: If vortex generators (VGs) are punched on the fin surface, the heat transfer performance of the fin can

Keywords： heat transfer enhancement     vortex generator     finned flat tube bank     heat exchanger    

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Aerodynamic interference effects and mitigation measures on vortex-induced vibrations of two adjacent

Xiaoliang MENG, Ledong ZHU, Zhenshan GUO

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 510-517 doi: 10.1007/s11709-011-0129-3

Abstract: with semi- and full-closed bridge decks, the aerodynamic interference between the two decks on the vortex-inducedtunnel tests with a spring-suspended sectional model aided with computational fluid dynamics (CFD) method

Keywords： separated parallel decks     vortex-induced vibration     aerodynamic interference     aerodynamic mitigation measure    

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Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans

LI Chunxi, WANG Songling

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 235-240 doi: 10.1007/s11708-008-0040-3

Abstract: anti-vortex rings were added separately.vortices were broken effectively and the flow fields inside the fan were more uniform with the two anti-vortexrings were effective in decreasing vortex noise.The cone-cylinder-shaped anti-vortex ring was more effective than the cylinder-shaped one in breakinglarge-scale vortexes and decreasing vortex noise.

Keywords： cylinder-shaped     evolution     computational     effective     large-scale    

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Title Author Date Type Operation

Development of an axial-type fan with an optimization method

Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,

Journal Article

Investigation of vortical flows over oscillating body using fast Lagrangian vortex method

Baoshan ZHU ,

Journal Article

Dynamic analysis of free-surface thin film flows driven by gravity over undulated substrate

Zhaomiao LIU, Xin LIU, Guobin WANG, Hong LIAO,

Journal Article

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

Journal Article

An overview of vortex-induced vibration (VIV) of bridge decks

Teng WU, Ahsan KAREEM

Journal Article

Numerical Simulation of Rotor/Stator Interaction in Turbomachinery by Use of a Disturbance Vortex Method

Chen Maozhang,Peng Bo

Journal Article

Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental

Nazim Abdul NARIMAN

Journal Article

Design and modeling of a free-piston engine generator

Journal Article

Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Journal Article

Semi-analytical approach for free vibration analysis of cracked beams resting on two-parameter elastic

Alborz MIRZABEIGY,Firooz BAKHTIARI-NEJAD

Journal Article

An assessment of China-Japan-Korea Free Trade Agreement’s economic and environmental impacts on China

Zhaoyang LIU, Xianqiang MAO, Wei TANG, Tao HU, Peng SONG

Journal Article

Numerical investigation and analysis of heat transfer enhancement in channel by longitudinal vortex based

TAO Wenquan, WU Junmei

Journal Article

Transversal tube pitch effects on local heat transfer characteristics of the flat tube bank fin mounted vortex

Liangbi WANG, Zhimin LIN, Kangjie SUN, Yuanxin DONG, Song LIU, Yongheng ZHANG,

Journal Article

Aerodynamic interference effects and mitigation measures on vortex-induced vibrations of two adjacent

Xiaoliang MENG, Ledong ZHU, Zhenshan GUO

Journal Article

Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans

LI Chunxi, WANG Songling

Journal Article