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Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 12-33 doi: 10.1007/s11709-007-0002-6

Abstract: large dams and hydro-power plants, especially those associated with application of state-of-the-art computationalSome examples demonstrating successful utilizations of computational mechanics in high dam engineeringTo make more use of the computational mechanics in high dam engineering, it is pointed out that muchresearch including different computational methods, numerical models and solution schemes, and verifications

Keywords: reservoir     engineering     hydro-power development     state-of-the-art computational     earthquake    

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1149-1163 doi: 10.1007/s11705-021-2096-0

Abstract: The novelty of this work is the computational fluid dynamic model combined with the novel carbon dioxide

Keywords: carbon dioxide photoreduction     computational fluid dynamic simulation     kinetic model     Langmuir adsorption    

AMMONIA DISPERSION FROM MULTI-FLOOR VERSUS STANDARD SINGLE-FLOOR PIG PRODUCTION FACILITIES BASED ON COMPUTATIONAL

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 374-389 doi: 10.15302/J-FASE-2023501

Abstract:

● NH3 dispersion from a multi-floor pig building was compared to a single-floor building.

Keywords: pig building     computational fluid dynamics     ammonia     dispersion    

Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 362-377 doi: 10.1007/s11783-011-0365-8

Abstract: In this article computational fluid dynamics (CFD) simulation of aerosol transport and deposition, i.e

Keywords: computational fluid dynamics (CFD)     aerosol     transport     deposition    

Introduction to the special section on the Symposium on Computational Fluid Dynamics and Molecular Simulation

Tianwei TAN, Peiyong QIN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 241-241 doi: 10.1007/s11705-009-0285-3

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: The deterioration of the microscopic pore structure of concrete under external sulfate attack (ESA) is a primary cause of degradation. Nevertheless, little effort has been invested in exploring the temporal and spatial development of the porosity of concrete under ESA. This study proposes a mechanical–chemical model to simulate the spatiotemporal distribution of the porosity. A relationship between the corrosion damage and amount of ettringite is proposed based on the theory of volume expansion. In addition, the expansion strain at the macro-scale is obtained using a stress analysis model of composite concentric sphere elements and the micromechanical mean-field approach. Finally, considering the influence of corrosion damage and cement hydration on the diffusion of sulfate ions, the expansion deformation and porosity space−time distribution are obtained using the finite difference method. The results demonstrate that the expansion strains calculated using the suggested model agree well with previously reported experimental results. Moreover, the tricalcium aluminate concentration, initial elastic modulus of cement paste, corrosion damage, and continuous hydration of cement significantly affect concrete under ESA. The proposed model can forecast and assess the porosity of concrete covers and provide a credible approach for determining the residual life of concrete structures under ESA.

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

Stormwater treatment: examples of computational fluid dynamics modeling

Gaoxiang YING, John SANSALONE, Srikanth PATHAPATI, Giuseppina GAROFALO, Marco MAGLIONICO, Andrea BOLOGNESI, Alessandro ARTINA

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 638-648 doi: 10.1007/s11783-012-0442-7

Abstract: This study applies the principles of computational fluid dynamics (CFD) to predict the particle and pollutant

Keywords: stormwater     unit operations and processes (UOPs)     hydrodynamic separation     filtration     adsorption     computational    

Confinement effects in methanol to olefins catalysed by zeolites: A computational review

German Sastre

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 76-89 doi: 10.1007/s11705-016-1557-3

Abstract: agents, methanol, dimethyl ether (DME), and surface methoxy species (SMS) will also be reviewed from the computational

Keywords: small pore zeolites     SAPOs     methanol-to-olefins     hydrocarbon pool mechanism     alkylation of polymethylbenzenes    

An investigation of ballistic response of reinforced and sandwich concrete panels using computational

Mohammad HANIFEHZADEH, Bora GENCTURK

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1120-1137 doi: 10.1007/s11709-019-0540-8

Abstract: Structural performance of nuclear containment structures and power plant facilities is of critical importance for public safety. The performance of concrete in a high-speed hard projectile impact is a complex problem due to a combination of multiple failure modes including brittle tensile fracture, crushing, and spalling. In this study, reinforced concrete (RC) and steel-concrete-steel sandwich (SCSS) panels are investigated under high-speed hard projectile inpact. Two modeling techniques, smoothed particle hydrodynamics (SPH) and conventional finite element (FE) analysis with element erosion are used. Penetration depth and global deformation are compared between doubly RC and SCSS panels in order to identify the advantages of the presence of steel plates over the reinforcement layers. A parametric analysis of the front and rear plate thicknesses of the SCSS configuration showed that the SCSS panel with a thick front plate has the best performance in controlling the hard projectile. While a thick rear plate is effective in the case of a large and soft projectile as the plate reduces the rear deformation. The effects of the impact angle and impact velocity are also considered. It was observed that the impact angle for the flat nose missile is critical and the front steel plate is effective in minimizing penetration depth.

Keywords: concrete panels     projectile impact     finite element modeling     smoothed particle hydrodynamics     strain rate effect    

Experimental and computational validation of a scaled train tunnel model using modal analysis

Janice B. D’SOUZA, Sangarapillai KANAPATHIPILLAI

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 420-428 doi: 10.1007/s11465-013-0281-7

Abstract: As a result, there is some difficulty in modeling the complete acoustic environment with computationalmode shapes were identified and were shown to successfully correspond to theoretical results and a computational

Keywords: reverberation time     acoustic environment     modal properties     resonances    

New computational treatment of optical wave propagation in lossywaveguides

Jian-xin ZHU,Guan-jie WANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 8,   Pages 646-653 doi: 10.1631/FITEE.1400406

Abstract: In this paper, the optical wave propagation in lossy waveguides is described by the Helmholtz equation with the complex refractive-index, and the Chebyshev pseudospectral method is used to discretize the transverse operator of the equation. Meanwhile, an operator marching method, a one-way re-formulation based on the Dirichletto-Neumann (DtN) map, is improved to solve the equation. Numerical examples show that our treatment is more efficient.

Keywords: Adjoint operator     Orthogonal     Chebyshev     Pseudospectral method     Dirichlet-to-Neumann map    

A computational toolbox for molecular property prediction based on quantum mechanics and quantitative

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 152-167 doi: 10.1007/s11705-021-2060-z

Abstract: Chemical industry is always seeking opportunities to efficiently and economically convert raw materials to commodity chemicals and higher value-added chemical-based products. The life cycles of chemical products involve the procedures of conceptual product designs, experimental investigations, sustainable manufactures through appropriate chemical processes and waste disposals. During these periods, one of the most important keys is the molecular property prediction models associating molecular structures with product properties. In this paper, a framework combining quantum mechanics and quantitative structure-property relationship is established for fast molecular property predictions, such as activity coefficient, and so forth. The workflow of framework consists of three steps. In the first step, a database is created for collections of basic molecular information; in the second step, quantum mechanics-based calculations are performed to predict quantum mechanics-based/derived molecular properties (pseudo experimental data), which are stored in a database and further provided for the developments of quantitative structure-property relationship methods for fast predictions of properties in the third step. The whole framework has been carried out within a molecular property prediction toolbox. Two case studies highlighting different aspects of the toolbox involving the predictions of heats of reaction and solid-liquid phase equilibriums are presented.

Keywords: molecular property     quantum mechanics     quantitative structure-property relationship     heat of reaction     solid-liquid phase equilibrium    

Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1214-1226 doi: 10.1007/s11709-019-0550-6

Abstract: A parametric computational study is conducted to investigate the shear yielding, flexural yielding, andvalidating the accuracy of the finite element (FE) modeling approach against previous experiments, 112 computational

Keywords: structural fuse     hysteretic damper     finite element analysis     energy dissipation     initial imperfection     butterfly-shaped links    

Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 267-273 doi: 10.1007/s11709-008-0034-6

Abstract: This paper outlines the essentials and procedures of computational fluid dynamics (CFD) simulation applicable

Keywords: discretization     computational     description     Self-anchored Suspension     simulation applicable    

Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1341-y

Abstract:

• 1,4-Dioxane was degraded via the photo-Fenton reactive membrane filtration.

Keywords: Photo-Fenton     Ceramic membrane     1     4-Dioxane     Goethite    

Title Author Date Type Operation

Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Journal Article

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational

Journal Article

AMMONIA DISPERSION FROM MULTI-FLOOR VERSUS STANDARD SINGLE-FLOOR PIG PRODUCTION FACILITIES BASED ON COMPUTATIONAL

Journal Article

Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Journal Article

Introduction to the special section on the Symposium on Computational Fluid Dynamics and Molecular Simulation

Tianwei TAN, Peiyong QIN,

Journal Article

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

Journal Article

Stormwater treatment: examples of computational fluid dynamics modeling

Gaoxiang YING, John SANSALONE, Srikanth PATHAPATI, Giuseppina GAROFALO, Marco MAGLIONICO, Andrea BOLOGNESI, Alessandro ARTINA

Journal Article

Confinement effects in methanol to olefins catalysed by zeolites: A computational review

German Sastre

Journal Article

An investigation of ballistic response of reinforced and sandwich concrete panels using computational

Mohammad HANIFEHZADEH, Bora GENCTURK

Journal Article

Experimental and computational validation of a scaled train tunnel model using modal analysis

Janice B. D’SOUZA, Sangarapillai KANAPATHIPILLAI

Journal Article

New computational treatment of optical wave propagation in lossywaveguides

Jian-xin ZHU,Guan-jie WANG

Journal Article

A computational toolbox for molecular property prediction based on quantum mechanics and quantitative

Journal Article

Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Journal Article

Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Journal Article

Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic

Journal Article