Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems最新文献_第3页

In situ- preparation and estimation of the physical characterization of Nanofluidic solution and its application 纳米流体溶液的原位制备、物理特性评价及其应用

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-11-01 DOI: 10.1177/23977914221127527

Ameen Abdelrahman, F. Erchiqui, Mourd Nedil, Siaj Mohamed

引用次数: 0

Stability and sedimentation characteristics of water based Al2O3 and TiO2 nanofluids 水基Al2O3和TiO2纳米流体的稳定性和沉降特性

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-10-07 DOI: 10.1177/23977914221127735

S. Mukherjee, Shanta Chakrabarty, P. Mishra, P. Chaudhuri

{"title":"Stability and sedimentation characteristics of water based Al2O3 and TiO2 nanofluids","authors":"S. Mukherjee, Shanta Chakrabarty, P. Mishra, P. Chaudhuri","doi":"10.1177/23977914221127735","DOIUrl":"https://doi.org/10.1177/23977914221127735","url":null,"abstract":"Nanofluids are regarded as promising heat transfer fluid due to their ultrafast cooling capability. However, stability analysis of nanofluids is very critical before its application in heat transfer .The present paper reports about an investigation on the stability of water-based Al2O3 and TiO2 nanofluids at ambient temperature. Nanoparticles, namely Al2O3 and TiO2 at different concentrations of 1, 0.5, 0.1, 0.05, and 0.01 wt.% respectively were directly dispersed in water without adding any dispersant and placed in a static container to observe gravitation settling. Change of sedimentation height with respect to time was measured using the sedimentation photograph capturing method. DLS (Dynamic Light Scattering) and zeta potential analysis were also executed to examine the stability of nanofluids. The results show that the visualization method, DLS and zeta potential analysis are in good correspondence to each other. Sedimentation velocity increases with an increase in nanoparticle concentration and aging. Brownian motion of nanoparticles resist the sedimentation in nanofluids. It is observed that TiO2nanofluid is more stable as compared to Al2O3 nanofluid due to its smaller particle size. Finally authors recommend smaller particle size, optimized sonication time, low nanoparticle concentration and use of surfactant to obtain better dispersion stability of nanofluids","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77437314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mechanical optimization of an Al-Al2O3 composite nanowire via molecular dynamics simulation and metaheuristic optimization 基于分子动力学模拟和元启发式优化的Al-Al2O3复合纳米线力学优化

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-10-03 DOI: 10.1177/23977914221127733

Mohammad Pakray, Sajad Hayati, S. K. Jalali

{"title":"Mechanical optimization of an Al-Al2O3 composite nanowire via molecular dynamics simulation and metaheuristic optimization","authors":"Mohammad Pakray, Sajad Hayati, S. K. Jalali","doi":"10.1177/23977914221127733","DOIUrl":"https://doi.org/10.1177/23977914221127733","url":null,"abstract":"In the present study, mechanical properties optimization is investigated for an Al-Al2O3 composite nanostructure. The Al-Al2O3 composite nanostructure is considered an Aluminum nanowire reinforced by spherical Al2O3 particles. The structure tensile test is simulated via molecular dynamics simulation using LAMMPS. The mechanical properties of the composite are extracted from the obtained stress-strain curve of the composite. The important mechanical properties include maximum stress and toughness. An optimization process is then applied to maximize the mechanical properties of the composite via metaheuristic optimization algorithms including Genetic Algorithm (GA), Ant Colony (ACO), and Grey Wolf Optimizer (GWO). Since the studied nanostructure is mono crystal, the reinforcing mechanism differs from that of a grained macro material. Therefore, the optimization variables are not confined to size and volume fraction but they also include the location of the particles. The optimization is performed for 0.05 and 0.10 volume fractions and different particle sizes with respect to the location of particles. Applying the optimization process, the mechanical properties of the studied composite nanowire are substantially improved for tensile loading. The results reveal that the placement of the particles has a considerable effect on the improvement of mechanical characteristics. At last, a pattern is presented for the placement of particles to achieve the highest tensile characteristics of Al-Al2O3 composite nanowires.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80662098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of FE method in predicting the properties of nanocomposites 有限元法在预测纳米复合材料性能中的应用

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-09-30 DOI: 10.1177/23977914221127528

M. Motamedi, M. Ramezani

引用次数: 0

Preface to the Special Issue on the 29th Annual International Conference of the Iranian Society of Mechanical Engineers (ISME2021) 第29届伊朗机械工程师学会国际年会(ISME2021)特刊前言

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-09-01 DOI: 10.1177/23977914221098616

M. Eslami, E. Ghavanloo, Y. Kiani

{"title":"Preface to the Special Issue on the 29th Annual International Conference of the Iranian Society of Mechanical Engineers (ISME2021)","authors":"M. Eslami, E. Ghavanloo, Y. Kiani","doi":"10.1177/23977914221098616","DOIUrl":"https://doi.org/10.1177/23977914221098616","url":null,"abstract":"In this Special Issue, some selected and extended contributions, which were presented at the 29th Annual International Conference of the Iranian Society of Mechanical Engineers (ISME), held in Tehran, Iran in May 2021, are collected. Ever since the first conference in 1992, ISME conferences have been a big scientific festivity for mechanical community in Iran. The ISME conference covers a wide range of mechanical fields in science and technology and aims to bring together various engineering mechanics expertise. The ISME2021 organizers decided to bring out papers presented at the conference in the field of microand nano-mechanics as a special issue of Journal of Nanomaterials, Nanoengineering and Nanosystems. This Special Issue contains four papers and each paper has undergone a rigorous review process. In the following, the articles are briefly introduced. In one of the papers, the static behaviors of functionally graded arbitrary straight-sided quadrilateral nanoplates have been investigated on the basis of a continuum mechanics-based surface elastic model. Mechanical response of polyester based composites filled with carbon black has been studied by experimental and micromechanical methods in another paper. The influence of shear deformation on wave propagation in periodic lattices with various topologies has been examined in one of the selected papers. Finally, a novel nanocomposite bone scaffold has been fabricated and its mechanical properties have been studied by using experimental techniques and finite element method. It is hoped that readers will find the special issue interesting. We would like to thank the authors for submitting their valuable works to the Special Issue, and the anonymous reviewers for their time, effort, and professional comments in evaluating the papers. In addition, our special thanks to the editor-in-chief of the journal, Prof. Vasileios Koutsos, for his excellent cooperation.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76228986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micropolar nanofluid overlying a porous layer: Thermosolutal convection 覆盖在多孔层上的微极性纳米流体:热溶质对流

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-08-09 DOI: 10.1177/23977914221117030

J. Umavathi

引用次数: 1

Density functional theory study of dissociative adsorption of H2 molecules on NiTi (001) surfaces H2分子在NiTi(001)表面解离吸附的密度泛函理论研究

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-07-18 DOI: 10.1177/23977914221114557

R. Arifin, A. Selamat, R. Asih, Darminto, M. Malyadi, W. Putra

{"title":"Density functional theory study of dissociative adsorption of H2 molecules on NiTi (001) surfaces","authors":"R. Arifin, A. Selamat, R. Asih, Darminto, M. Malyadi, W. Putra","doi":"10.1177/23977914221114557","DOIUrl":"https://doi.org/10.1177/23977914221114557","url":null,"abstract":"Ti-based alloys have the potential to be used as hydrogen storage units, including NiTi. In contrast, NiTi alloy is sensitive to H atoms. It has been found that hydrogen can cause embrittlement in NiTi alloys. Thus, it is become indispensable to elucidate the reaction of H2 molecules on the NiTi surface. Using density functional theory, we investigated the dissociation mechanism of H2 molecules on the B2 NiTi (001) surface. We found that H atoms tend to come closer to Ni atoms on the Ti- and Ni-terminated (NiTi) (001) substrate. The calculation results showed that the adsorption energy of H atoms at the hollow site was higher than that at the top site. We identified two dissociation mechanisms of H2 molecules on Ti and Ni terminated on NiTi (001) substrates via the hollow sites of the adsorption route. The adsorption energy values obtained were extremely low, that is, 0.23 and 0.38 eV for the Ni and Ti terminated of NiTi (001) substrates, respectively. The dissociation reaction of H2 molecules, which is an exothermic reaction, can quickly occur on the NiTi (001) surface because of the low activation energy.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88074724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Impact of asymmetric zeta-potential on natural convection flow in a vertical microannulus with electroosmotic and Joule heating effects 不对称ζ势对具有电渗透和焦耳热效应的垂直微环内自然对流的影响

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-06-10 DOI: 10.1177/23977914221103995

M. Oni, B. Jha

引用次数: 1

Analytical approach on the free convection of Buongiorno model nanofluid over a shrinking surface Buongiorno模型纳米流体在收缩表面上自由对流的分析方法

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-06-07 DOI: 10.1177/23977914221103982

Prakash Kumar Ratha, Satyaranjan Mishra, R. Tripathy, P. K. Pattnaik

{"title":"Analytical approach on the free convection of Buongiorno model nanofluid over a shrinking surface","authors":"Prakash Kumar Ratha, Satyaranjan Mishra, R. Tripathy, P. K. Pattnaik","doi":"10.1177/23977914221103982","DOIUrl":"https://doi.org/10.1177/23977914221103982","url":null,"abstract":"This article focuses on the two-dimensional unsteady flow of an incompressible Casson nanofluid over a shrinking horizontal sheet under the influence of inclined magnetic field and in an advance dissipative heat due to Joule heating. The proposed Buongiorno model for the inclusion of Brownian and thermophoresis enriches the flow profiles. Casson model constituents a plastic fluid model that exhibits shear thinning characteristics and high shear viscosity. The proposed fluid model also approximates the rheological behavior of other liquids like physiological suspensions, cosmetics, syrups, etc. The governing partial differential equations (PDEs) that account for effect of Buongiorno model are converted in to nonlinear ordinary differential equations (ODEs) through suitable similarity variables. Further, approximate analytical technique such as Adomian Decomposition Method is beneficial to carry out the solution of the transformed governing equations and the significant nature of the contributing parameter for both the steady and unsteady case is presented via graphs. Moreover, the major contribution is; the Casson parameter along with suction/injection favors in the smooth enhancement in the velocity profiles and the fluid temperature also encouraged by the augmentation in Brownian and thermophoresis parameter.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90877621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Cu-kerosene and Al2O3-kerosene boundary layer nanofluid flow past a stretching/shrinking surface cu -煤油和al2o3 -煤油边界层纳米流体流过拉伸/收缩表面

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Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems Pub Date : 2022-06-07 DOI: 10.1177/23977914221103986

P. K. Pattnaik, Sujogya Mishra, A. P. Baitharu, S. Jena

引用次数: 0