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Water film coated composite liquid metal marble and its fluidic impact dynamics phenomenon

Yujie DING,Jing LIU

Frontiers in Energy 2016, Volume 10, Issue 1,   Pages 29-36 doi: 10.1007/s11708-015-0388-0

Abstract: into water droplets, the fabricated liquid marble successfully avoided being oxygenized by the metal fluidThis fundamental finding raised profound multiphase fluid mechanics for understanding the complex liquid

Keywords： liquid metal marble     metallic droplet     composite fluid     impact dynamics     multiphase fluid mechanics    

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Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

Zhiyi YU, Guoyu WANG, Shuliang CAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 53-59 doi: 10.1007/s11465-009-0006-0

Abstract: This paper presents an extended two-fluid model based on the Navier-Stokes equations and the standardthe pure liquid flow and air-water two-phase flow with the inlet gas volume fraction being 15% in a multiphase

Keywords： two-fluid model     multiphase rotodynamic pump     SIMPLEC algorithm     numerical simulation    

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Simulating multiphase flow in a two-stage pusher centrifuge using computational fluid dynamics

Chong PANG, Wei TAN, Endian SHA, Yuanqing TAO, Liyan LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 329-338 doi: 10.1007/s11705-012-1205-5

Abstract: To better understand centrifugal filter processes, the computational fluid dynamics (CFD) software programFLUENT has been used to model the three-dimensional geometry and to simulate multiphase flows based

Keywords： two-stage pusher centrifuge     multiphase flow     CFD     dynamic mesh     porous media    

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Erosion-corrosion failure of REAC pipes under multiphase flow

Ping TANG, Jian YANG, Jinyang ZHENG, Shizheng HE, Jianjun YE, Guofu OU, Ieong WONG, Yanbao MA,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 389-395 doi: 10.1007/s11708-009-0045-6

Abstract: By using computational fluid dynamics (CFD) modeling and simulation, a predictive method was proposedto explore the erosion failure of reactor effluent air cooler (REAC) pipes with liner under multiphasetheoretical model based on the erosion-corrosion effects of REAC on mixture turbulent flow was proposed for multiphaseBesides, the pipe’s erosion-corrosion rules under multiphase flow and the relationship betweenmultiphase flow and erosion-corrosion under dangerous working conditions were studied.

Keywords： multiphase flow     erosion-corrosion     pipes     reactor effluent air cooler (REAC)     computational fluid dynamics    

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A regularization scheme for explicit level-set XFEM topology optimization

Markus J. GEISS, Jorge L. BARRERA, Narasimha BODDETI, Kurt MAUTE

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 153-170 doi: 10.1007/s11465-019-0533-2

Abstract: Regularization of the level-set (LS) field is a critical part of LS-based topology optimization (TO) approaches. Traditionally this is achieved by advancing the LS field through the solution of a Hamilton-Jacobi equation combined with a reinitialization scheme. This approach, however, may limit the maximum step size and introduces discontinuities in the design process. Alternatively, energy functionals and intermediate LS value penalizations have been proposed. This paper introduces a novel LS regularization approach based on a signed distance field (SDF) which is applicable to explicit LS-based TO. The SDF is obtained using the heat method (HM) and is reconstructed for every design in the optimization process. The governing equations of the HM, as well as the ones describing the physical response of the system of interest, are discretized by the extended finite element method (XFEM). Numerical examples for problems modeled by linear elasticity, nonlinear hyperelasticity and the incompressible Navier-Stokes equations in two and three dimensions are presented to show the applicability of the proposed scheme to a broad range of design optimization problems.

Keywords： level-sets     XFEM     CutFEM     topology optimization     heat method     signed distance field     nonlinear structural mechanics     fluid mechanics    

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Application of different CFD multiphase models to investigate effects of baffles and nanoparticles on

Ali SHAHMOHAMMADI,Arezou JAFARI

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 320-329 doi: 10.1007/s11705-014-1437-7

Abstract: work, the effect of baffles in a pipe on heat transfer enhancement was studied using computational fluidFluid flow through the horizontal tube with uniform heat flux was simulated numerically and three dimensionalsimulations, the results obtained by the single phase were compared with those obtained by three different multiphasemodels including Eulerian, mixture and volume of fluid (VOF) at Reynolds numbers in range of 600 toIt was found that multiphase models could better predict the heat transfer in nanofluids.

Keywords： CFD simulation     heat transfer     nanofluid     baffle     single phase model     multiphase model    

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Latest progress in numerical simulations on multiphase flow and thermodynamics in production of natural

Lin ZUO, Lixia SUN, Changfu YOU

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 152-159 doi: 10.1007/s11708-009-0017-x

Abstract: Some studies on the multiphase flow and thermodynamics have been conducted to investigate the feasibilityA comprehensive numerical method considering the multiphase flow and thermodynamics of gas production

Keywords： numerical simulation     natural gas hydrate     dissociation     thermodynamics     multiphase flow    

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: reduction methods were combined to simulate a progressive failure in notched composite plates using a macro mechanics

Keywords： progressive failure     notched composite plate     Hashin failure criterion     macro mechanics approach     finite    

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Dvelopment of Aeronautics and Astronautics With Mechanics

Chen Shilu

Strategic Study of CAE 2003, Volume 5, Issue 3,   Pages 25-26

Abstract:

This paper discusses the development of aeronautics and astronautics with mechanics, reveals the developmentof new branches of interconnected sciences in mechanics, describes the relations of flight mechanicswith aerodynamics, structure mechanics, general mechanics and automatic control, and introduces thenew branch of flight mechanics—flight dynamics of elastic vehicle.

Keywords： aerodynamics     structure mechanics     general mechanics     automatic control     flight mechanics     flight dynamics    

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Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0702-6

Abstract: The creep life of an aeroengine recuperator is investigated in terms of continuum damage mechanics by

Keywords： creep     life assessment     brazed joint     continuum damage mechanics     aeroengine recuperator    

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Experimental investigation of multiphase flow behavior in drilling annuli using high speed visualization

Alap Ali ZAHID, Syed Raza ur REHMAN, Anwarul HASAN, S. RUSHD, Mohammad Azizur RAHMAN

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 635-643 doi: 10.1007/s11708-018-0582-y

Abstract: is an important technique to visualize the drilling conditions and to study the physics of complex multiphaseThe main advantage of visualizing multiphase flow in a drilling annulus is that the viewer can easilydistinguish fluid phases, flow patterns and thicknesses of cutting beds.

Keywords： visualization     horizontal annulus     hole cleaning     multiphase flow     image analysis     flow regime    

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Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 718-728 doi: 10.1007/s11709-022-0815-3

Abstract: The horizontal stiffness of the isolated layer is reduced substantially by a friction pendulum bearing (FPB) toprotectthe structure from potential damages caused by earthquakes. However, horizontal stiffness is essential to progressive collapse resistance of structures. This paper presents a simplified model to assess the progressive collapse response of beam-pier substructure isolated by FPB. Progressive collapse resistance by flexural action of the beam and additional resistance owing to the horizontal restraining force was achieved. The influences of the equivalent radius and friction coefficient of the FPB, the applied axial force on the FPB, and span-depth ratio of the beam on the additional resistance were investigated. Simulations were conducted to verify the proposed model. The results show that progressive collapse resistance provided by horizontal restraining can be reduced as large as 46% and 88% during compressive arching action (CAA) and catenary action (CA), respectively. The equivalent radius of the FPB shows limited effect on the progressive collapse response of FPB isolated structures, but friction coefficient and applied axial force, as well as depth ratio of the beam, show significant influences on the additional progressive collapse resistance capacity. Finite element method (FEM) results are in good agreement with the result obtained by the proposed method.

Keywords： friction pendulum bearing     progressive collapse     horizontal stiffness     compressive arching action     catenary action    

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Advances in structural mechanics of Chinese ancient architectures

YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 1-25 doi: 10.1007/s11709-008-0002-1

Abstract: The researches on the structural mechanics of ancient architectures show the different aspects of structureand mechanics.Systematical studies on the structural mechanics of ancient architectures have been carried out at Xihave in fact problems of structural strength and stability; the need for further studies on structural mechanics
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Research progress on hydrate plugging in multiphase mixed rich-liquid transportation pipelines

Shuyu SONG, Zhiming LIU, Li ZHOU, Liyan SHANG, Yaxin WANG

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 774-792 doi: 10.1007/s11708-020-0688-x

Abstract: The plugging mechanism of multiphase mixed rich-liquid transportation in submarine pipeline is a prerequisitefor maintaining the fluid flow in the pipeline and ensuring safe fluid flow.This paper introduced the common experimental devices used to study multiphase flow, and summarized theNext, the dynamic analysis of a multiphase mixed rich-liquid transportation pipeline should be coupled

Keywords： hydrate     rich-liquid phase     plugging mechanism     coalescence     deposition     anti-agglomerate    

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Title Author Date Type Operation

Water film coated composite liquid metal marble and its fluidic impact dynamics phenomenon

Yujie DING,Jing LIU

Journal Article

Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

Zhiyi YU, Guoyu WANG, Shuliang CAO

Journal Article

Simulating multiphase flow in a two-stage pusher centrifuge using computational fluid dynamics

Chong PANG, Wei TAN, Endian SHA, Yuanqing TAO, Liyan LIU

Journal Article

Erosion-corrosion failure of REAC pipes under multiphase flow

Ping TANG, Jian YANG, Jinyang ZHENG, Shizheng HE, Jianjun YE, Guofu OU, Ieong WONG, Yanbao MA,

Journal Article

A regularization scheme for explicit level-set XFEM topology optimization

Markus J. GEISS, Jorge L. BARRERA, Narasimha BODDETI, Kurt MAUTE

Journal Article

Steven Wang：Fluid Mechanics with Energy and Environmental Implications（2021-5-21）

Steven Wang(中级职称)

6 Jul 2021

Conference Videos

Application of different CFD multiphase models to investigate effects of baffles and nanoparticles on

Ali SHAHMOHAMMADI,Arezou JAFARI

Journal Article

Latest progress in numerical simulations on multiphase flow and thermodynamics in production of natural

Lin ZUO, Lixia SUN, Changfu YOU

Journal Article

Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Journal Article

Dvelopment of Aeronautics and Astronautics With Mechanics

Chen Shilu

Journal Article

Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach

Journal Article

Experimental investigation of multiphase flow behavior in drilling annuli using high speed visualization

Alap Ali ZAHID, Syed Raza ur REHMAN, Anwarul HASAN, S. RUSHD, Mohammad Azizur RAHMAN

Journal Article

Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Journal Article

Advances in structural mechanics of Chinese ancient architectures

YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai

Journal Article

Research progress on hydrate plugging in multiphase mixed rich-liquid transportation pipelines

Shuyu SONG, Zhiming LIU, Li ZHOU, Liyan SHANG, Yaxin WANG

Journal Article