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Additive manufacturing of metallic and polymeric load-bearing biomaterials using laser powder bed fusion:A review

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Journal of Materials Science & Technology 2021年第35期94卷 196-215页

作者： alireza nouri Anahita Rohani Shirvan Yuncang Li Cuie Wen School of Engineering RMIT UniversityMelbourneVictoria 3001Australia Biomedical Engineering Department Amirkabir University of TechnologyTehranIran Textile Engineering Department Amirkabir University of TechnologyTehranIran

Surgical prostheses and implants used in hard-tissue engineering should satisfy all the clinical,mechanical,manufacturing,and economic requirements in order to be used for load-bearing ***,and to a lesser extent,polymers are promising materials that have long been used as load-bearing *** the rapid development of additive manufacturing(AM)technology,metallic and polymeric implants with complex structures that were once impractical to manufacture using traditional processing methods can now easily be made by *** technology has emerged over the past four decades as a rapid and cost-effective fabrication method for geometrically complex implants with high levels of accuracy and *** ability to design and fabricate patient-specific,customized structural biomaterials has made AM a subject of great interest in both research and clinical *** different AM methods,laser powder bed fusion(L-PBF)is emerging as the most popular and reliable AM method for producing load-bearing *** layer-by-layer process uses a high-energy laser beam to sinter or melt powders into a part patterned by a computer-aided design(CAD)*** most important load-bearing applications of L-PBF-manufactured biomaterials include orthopedic,traumatological,craniofacial,maxillofacial,and dental *** unequalled design freedom of AM technology,and L-PBF in particular,also allows fabrication of complex and customized metallic and polymeric scaffolds by altering the topology and controlling the macro-porosity of the *** article gives an overview of the L-PBF method for the fabrication of load-bearing metallic and polymeric biomaterials.

关键词： Additive manufacturing Load-bearing biomaterials Powder bed fusion(PBF) Selective laser melting(SLM) Selective laser sintering(SLS)

Evaluation of numerical schemes for capturing shock waves in modeling proppant transport in fractures

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Petroleum Science 2017年第4期14卷 731-745页

作者： Morteza Roostaei alireza nouri Vahidoddin Fattahpour Dave Chan Department of Civil and Environmental Engineering University of AlbertaEdmontonCanada

In petroleum engineering, the transport phenomenon of proppants in a fracture caused by hydraulic fracturing is captured by hyperbolic partial differential equations(PDEs). The solution of this kind of PDEs may encounter smooth transitions, or there can be large gradients of the field variables. The numerical challenge posed in a shock situation is that high-order finite difference schemes lead to significant oscillations in the vicinity of shocks despite that such schemes result in higher accuracy in smooth regions. On the other hand, first-order methods provide monotonic solution convergences near the shocks,while giving poorer accuracy in the smooth *** numerical simulation of such systems is a challenging task using conventional numerical methods. In this paper, we investigate several shock-capturing *** competency of each scheme was tested against onedimensional benchmark problems as well as published numerical experiments. The numerical results have shown good performance of high-resolution finite volume methods in capturing shocks by resolving discontinuities while maintaining accuracy in the smooth regions. Thesemethods along with Godunov splitting are applied to model proppant transport in fractures. It is concluded that the proposed scheme produces non-oscillatory and accurate results in obtaining a solution for proppant transport problems.

关键词： Proppant transport Hyperbolic partial differential equations Frac pack Hydraulic fracturing

Relationship between rock macro-and micro-properties and wellbore breakout type

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Underground Space 2021年第1期6卷 62-75页

作者： Hossein Rahmati alireza nouri Dave Chan Hans Vaziri University of Alberta AlbertaCanada BP America Inc. HoustonUSA

This study numerically investigates the effect of material micro-and macro-parameters on the failure mechanisms and geometry of a wellbore *** analysis of the borehole breakout is essential in addressing wellbore stability,well completion,and sand production *** three-dimensional discrete element method(DEM)was used in the *** numerical tool was used in numerical model simulations of drilling through sandstone in cubic samples at the laboratory scale subjected to pre-existing far-field ***,a series of triaxial testing simulations were performed to relate the micromechanical parameters to the macromechanical material *** results showed that the geometry of the breakout is affected,among the material micro-parameters,by the particle contact modulus,bond normal and shear strengths,particle crushing strength,and particle size ***,it was found that the macro-parameters including Young’s modulus,friction and dilation angles,and uniaxial compression strength(UCS)also affect the type of breakout.

关键词： Borehole breakout Numerical simulation Material properties

Fabrication of graphene oxide decorated with poly(dimethyl amino ethyl methacrylate) brush for efficient Cr(Ⅵ) adsorption from aqueous solution

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Chinese Journal of Chemical Engineering 2024年第9期73卷 51-61页

作者： alireza nouri Siew Fen Chua Ebrahim Mahmoudi Abdul Wahab Mohammad Wei Lun Ang Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Centre for Sustainable Process Technology(CESPRO) Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Chemical and Water Desalination Engineering Program College of EngineeringUniversity of SharjahSharjah 27272United Arab Emirates

Confronting the severe health threats and environmental impacts of Cr(Ⅵ) in aquatic environments demands innovative and effective remediation approaches. In this study, Graphene oxide(GO)-decorated poly(dimethyl amino ethyl methacrylate)(PDMAEMA) brush nanocomposites(GOP1, GOP2, GOP3, and GOP4) were fabricated using atom transfer radical polymerization(ATRP) by the “graft from” *** resulting nanocomposites were utilized for removing Cr(Ⅵ) with good adsorption performance due to the electrostatic interaction of protonated nitrogen groups in the brush chains with negatively charged particles in the solution. The kinetic model of pseudo-second-order best represented the contaminants' adsorption characteristics. The Weber-Morris model further indicated that surface adsorption and intraparticle diffusion mechanisms primarily controlled the adsorption procedure. Additionally, the Langmuir and Temkin isotherm models were found to most accurately represent the adsorption characteristics of the pollutants on the nanocomposites, and GOP4 can achieve the maximum adsorption capacity of 164.4 mg·g^(-1). The adsorbents' capacity maintains above 85% after five cycles of adsorption-desorption. The nanocomposites in this study demonstrate promising potential for eliminating Cr(Ⅵ) from aqueous solutions.

关键词： Graphene oxide PDMAEMA brush Polymerization Nanoparticles Adsorption Chromium

Numerical investigation of the hydraulic fracturing mechanisms in oil sands

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Underground Space 2021年第2期6卷 195-216页

作者： Siavash Taghipoor Morteza Roostaei Arian Velayati Atena Sharbatian Dave Chan alireza nouri Department of Civil and Environmental Engineering University of AlbertaCanada KGHM International 1010 Lorne StSudburyON P3C 4R9Canada RGL Reservoir Management Inc. 690842 StLeducAB T9E 0R8Canada

This paper presents a numerical investigation of hydraulic fracturing in oil sands during cold water injection by considering the aspects of both geomechanics and reservoir fluid *** to previous studies,the low shear strengths of unconsolidated or weakly consolidated sandstone reservoirs significantly influence the hydraulic fracturing ***,classical hydraulic fracture models cannot simulate the fracturing process in weak sandstone *** the current numerical models,the direction of a tensile fracture is predetermined based on in situ stress ***,the potential transformation of a shear fracture into a tensile fracture and the potential reorientation of a tensile fracture owing to shear banding at the fracture tip have not yet been addressed in the *** this study,a smeared fracture technique is employed to simulate tensile and shear fractures in oil *** model used combines many important fracture features,which include the matrix flow,poroelasticity and plasticity modeling,saturation-dependent permeability,gradual degradation of the oil sands as a result of dilative shear deformation,and the tensile fracturing and shear failure that occur with the simultaneous enhancement of ***,sensitivity analyses are also performed with respect to the reservoir and geomechanical parameters,including the apparent tensile strength and cohesion of the oil sands,magnitude of the minimum and maximum principal stress,absolute permeability and elastic modulus of the oil sands and ramp-up *** these analyses are performed to clarify the influences of these parameters on the fracturing response of the oil sands.

关键词： Smeared fracture Hydraulic fracturing Numerical simulation Oil sand

MXene:From synthesis to environment remediation

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Chinese Journal of Chemical Engineering 2023年第9期61卷 260-280页

作者： Ali Nikkhah Hasan Nikkhah Hadis langari alireza nouri Abdul Wahab Mohammad Ang Wei Lun Ng law Yong Rosiah Rohani Ebrahim Mahmoudi Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Department of Mechanical and Aerospace Engineering University at BuffaloBuffaloUSA Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsUSA Department of Chemistry and Medicinal Chemistry University at BuffaloBuffaloUSA Chemical and Water Desalination Engineering Program College of EngineeringUniversity of SharjahSharjah 27272United Arab Emirates Lee Kong Chian Faculty of Engineering and Science Universiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongKajangSelangorMalaysia

A new burgeoning family of two-dimensional(2D)transition metal carbides/nitrides,better known as MXenes,have received extensive attention because of their distinct properties,such as metallic conductivity,good hydrophilicity,large surface area,good mechanical stability,and *** 40 different MXenes have been synthesized,and dozens more structures and properties have been theoretically ***,the recent progress in MXenes development is not well covered in chronological order based on different *** review article focuses on emerging synthesis methods,the properties of MXenes,and mainly the applications of MXenes and MXene-based material family in environmental remediation,a comprehensive review of gaseous and aqueous pollutants treatment.

关键词： MXene 2D materials Wastewater treatment CO_(2)capture Adsorption Photodegradation

Experimental study on solid particle migration and production behaviors during marine natural gas hydrate dissociation by depressurization

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Petroleum Science 2023年第6期20卷 3610-3623页

作者： Yan-Long Li Fu-Long Ning Meng Xu Min-Hui Qi Jia-Xin Sun alireza nouri De-Li Gao Neng-You Wu Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyQingdao266237ShandongChina Laboratory for Marine Mineral Resources Laoshan LaboratoryQingdao266237ShandongChina Faculty of Engineering China University of Geosciences-WuhanWuhan430074HubeiChina MOE Key Laboratory of Petroleum Engineering China University of PetroleumBeijing102249China School of Mining and Petroleum Engineering University of AlbertaEdmontonABCanada

Sand production is one of the main obstacles restricting gas extraction efficiency and safety from marine natural gas hydrate(NGH)*** migration within the NGH reservoir dominates sand production behaviors,while their relationships were rarely reported,severely constrains quantitative evaluation of sand production *** paper reports the optical observations of solid particle migration and production from micrometer to mesoscopic scales conditioned to gravel packing during depressurization-induced NGH dissociation for the first *** evolutionary modes of sand migration are established based on experimental observations,and its implications on field NGH are comprehensively *** particle migration regimes of local borehole failure,continuous collapse,wormhole expansion,extensive slow deformation,and pore-wall fluidization are proved to occur during *** types of particle migration regimes and their transmission modes during depressurization are predominantly determined by initial hydrate *** contrast,the depressurization mainly dominates the transmission rate of the particle migration ***,both the cumulative mass and the medium grain size of the produced sand decrease linearly with increasing initial methane hydrate(MH)*** gas bubble emission,expansion,and explosion during MH dissociation delay sand migration into the *** the same time,continuous water flow is a requirement for sand production during hydrate dissociation by *** experiments enlighten us that a constitutive model that can illustrate visible particle migration regimes and their transmission modes is urgently needed to bridge numerical simulation and field *** wellbore layout positions or special reservoir treatment shall be important for mitigating sand production tendency during NGH exploitation.

关键词： Natural gas hydrate Solid particle migration Sand production Sand control Sanding Hydrate exploitation

Fabrication of graphene oxide decorated with poly(dimethyl amino ethyl methacrylate) brush for effi cient Cr(VI) adsorption from aqueous solution

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DRAG REDUCTION IN A TURBULENT CHANNEL FLOW WITH HYDROPHOBIC WALL

中国化学工程学报（英文版） 2024年第9期 51页

作者： alireza nouri Siew Fen Chua Ebrahim Mahmoudi Abdul Wahab Mohammad Wei Lun Ang

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Journal of Hydrodynamics 2012年第3期24卷 458-466页

作者： nouri Nowrouz Mohammad SEKHAVAT Setareh MOFIDI alireza Department of Mechanical Engineering Iran University of Science and TechnologyTehran Iran

This paper investigates a theoretical prediction of friction drag reduction in turbulent channel flow which is achieved by using superhydrophobic surfaces. The effect of the hydrophobic surface is considered to be a slip boundary condition on the wall, and this new boundary condition is added to Large Eddy Simulation （LES） equations. The predicted drag reduction at Rer= 180 is approximately 30%, which concurs with results obtained from Direct Numerical Simulation （DNS）. An important implication of the present finding is that the near-wall turbulence structures are modified with streamwise slip velocity. In addition, a noticeable effect on the turbulence structure occurs when the slin lenmh is ereater than a certain vahle

关键词： superhydrophobic surface Large Eddy Simulation (LES) drag reduction slip length turbulence structures