European Physical Journal-applied Physics最新文献_第4页

An improved energy management method based on combination of multi agent system and fuzzy logic 一种基于多智能体系统与模糊逻辑相结合的改进能源管理方法

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200189

Basma Aoukach, B. Oukarfi

引用次数: 0

Theoretical research on novel monoclinic Zr2B5 from first principles calculations 基于第一性原理计算的新型单斜Zr2B5理论研究

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200284

Xiaofeng Li, Junyi Du, Ziyu Hu

引用次数: 0

Characterization of silver doped In2S3 films 掺银In2S3薄膜的表征

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200274

S. M. Bazarchi, P. Esmaili, S. Asgary

引用次数: 10

Fabrication and characterization of graphene induced Metal Semiconductor Metal (MSM) structure for detection and sensing applications 用于探测和传感应用的石墨烯诱导金属半导体金属(MSM)结构的制备和表征

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200049

S. M. Alam, A. Shuja, Erum Jamil, F. Siddique, Ali Siddiqui

引用次数: 0

A systematic study of silicon nanowires array fabricated through metal-assisted chemical etching 金属辅助化学蚀刻制备硅纳米线阵列的系统研究

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200289

Shiying Zhang, Li Zhenhua, Qingjun Xu

引用次数: 0

Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts 新型弹簧带轴向波纹管热液特性试验研究及不可逆性分析

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200192

S. Bhattacharyya, Debraj Sarkar, U. Mahabaleshwar, M. Soni, M. Mohanraj

{"title":"Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts","authors":"S. Bhattacharyya, Debraj Sarkar, U. Mahabaleshwar, M. Soni, M. Mohanraj","doi":"10.1051/epjap/2020200192","DOIUrl":"https://doi.org/10.1051/epjap/2020200192","url":null,"abstract":"The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":"53 1","pages":"30901"},"PeriodicalIF":1.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91171302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Chromium doped GeTe for low-power-consumption phase change memory 铬掺杂GeTe用于低功耗相变存储器

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200275

J. Xue, Mingxu Pei, Weihua Wu, Xiaoqin Zhu, Long Zheng

引用次数: 2

Burgers fluid flow in perspective of Buongiorno’s model with improved heat and mass flux theory for stretching cylinder 从Buongiorno模型和改进的热通量和质量通量理论看拉伸圆柱体的Burgers流体流动

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/EPJAP/2020200286

Zahoor Iqbal, Masood Khan, Awais Ahmed

{"title":"Burgers fluid flow in perspective of Buongiorno’s model with improved heat and mass flux theory for stretching cylinder","authors":"Zahoor Iqbal, Masood Khan, Awais Ahmed","doi":"10.1051/EPJAP/2020200286","DOIUrl":"https://doi.org/10.1051/EPJAP/2020200286","url":null,"abstract":"In this study, an effort is made to model the thermal conduction and mass diffusion phenomena in perspective of Buongiorno’s model and Cattaneo-Christov theory for 2D flow of magnetized Burgers nanofluid due to stretching cylinder. Moreover, the impacts of Joule heating and heat source are also included to investigate the heat flow mechanism. Additionally, mass diffusion process in flow of nanofluid is examined by employing the influence of chemical reaction. Mathematical modelling of momentum, heat and mass diffusion equations is carried out in mathematical formulation section of the manuscript. Homotopy analysis method (HAM) in Wolfram Mathematica is utilized to analyze the effects of physical dimensionless constants on flow, temperature and solutal distributions of Burgers nanofluid. Graphical results are depicted and physically justified in results and discussion section. At the end of the manuscript the section of closing remarks is also included to highlight the main findings of this study. It is revealed that an escalation in thermal relaxation time constant leads to ascend the temperature curves of nanofluid. Additionally, depreciation is assessed in mass diffusion process due to escalating amount of thermophoretic force constant.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":"28 1","pages":"31101"},"PeriodicalIF":1.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73006362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

2D modeling of the human ear using the equivalent mechanical impedance 利用等效机械阻抗对人耳进行二维建模

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-12-01 DOI: 10.1051/epjap/2020200226

Chahbi Aziz, A. Safaa, Faiz Adil, Hajjaji Abdelowahed

{"title":"2D modeling of the human ear using the equivalent mechanical impedance","authors":"Chahbi Aziz, A. Safaa, Faiz Adil, Hajjaji Abdelowahed","doi":"10.1051/epjap/2020200226","DOIUrl":"https://doi.org/10.1051/epjap/2020200226","url":null,"abstract":"Several mass–spring–damper models have been developed to study the response of the human body parts. In such models, the lumped elements represent the mass of different body parts, and stiffness and damping properties of various tissues. The aim of this research is to develop a 2D axisymmetric model to simulate the motion of the human tympanic membrane. In this contribution we develop our model using a Comsol Multiphysics software to construct a 2D axisymmetric objects, the acoustic structure interaction between the ear canal (field of propagation of the acoustic wave) and the structure of ear (skin, cartilage, bone, tympanic membrane) was solved using finite elements analysis (FEA). A number of studies have investigated the motion of the human tympanic membrane attached to the ossicular chain and the middle ear cavity. In our model, the tympanic annular is assumed to be fixed and the loading of what comes behind the tympanic membrane as the ossicular chain, while middle ear cavity and cochlea were replaced by the equivalent mechanical impedance of a spring mass damper system. The obtained results demonstrate that the maximum displacements of the umbo are obtained at the frequency range of 0.9–2.6 kHz, the sound pressure gain had the shape of peak with a maximum at 2–3 kHz frequency range. The umbo displacement depends on the damping coefficient d, and the sound pressure at the tympanic membrane was enhanced compared to that at the ear canal entrance.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":"23 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82181568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of magnetic field on freezing characters of carrot, potato and broccoli 磁场对胡萝卜、马铃薯和西兰花冷冻特性的影响

IF 1 4区物理与天体物理

European Physical Journal-applied Physics Pub Date : 2020-11-20 DOI: 10.1051/epjap/2020200188

Aiqiang Chen, Yue Liu, G. E. Achkar, Erlong Li, Q. Zou, Bin Liu

{"title":"Effects of magnetic field on freezing characters of carrot, potato and broccoli","authors":"Aiqiang Chen, Yue Liu, G. E. Achkar, Erlong Li, Q. Zou, Bin Liu","doi":"10.1051/epjap/2020200188","DOIUrl":"https://doi.org/10.1051/epjap/2020200188","url":null,"abstract":"In order to study the effects of magnetic field on the freezing characteristics of fruits and vegetables, carrot, potato and broccoli were frozen without and with a magnetic field of intensities 4.6 Gs, 9.2 Gs, 18 Gs and 36 Gs, while recording the temperature changes. The microstructure and temperature change of carrot during freezing were analyzed in detail. The results show that the magnetic field has effects on the freezing process of carrot strips, characterized by a reduction of the phase transition time and a characteristic diversity of the ice crystal formation zone. Crystallization characteristics are similar in the samples without and with a magnetic field of low intensities (4.6 Gs and 9.2 Gs), which show as a non-homogeneous phase transition process in the carrot sample, and the tissue changed showing a sunken, cell morphology variation and increased intercellular space. The freezing is almost homogeneous under a magnetic field of intensities 18 Gs and 36 Gs, then results in a slightly change of cell morphology. In addition, the effects of magnetic field on fruits and vegetables are varying with their species.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":"14 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2020-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82089426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6