International Journal of Applied Electromagnetics and Mechanics最新文献_第7页

Modified Darcy’s law and couple stress effects on electro-osmotic flow of non-Newtonian nanofluid with peristalsis 修正达西定律及耦合应力对具有蠕动的非牛顿纳米流体电渗透流动的影响

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-07-03 DOI: 10.3233/jae-220287

M. Abdelmoneim, N. Eldabe, Mohamed Ahmed Abouzeid, M. Ouaf

{"title":"Modified Darcy’s law and couple stress effects on electro-osmotic flow of non-Newtonian nanofluid with peristalsis","authors":"M. Abdelmoneim, N. Eldabe, Mohamed Ahmed Abouzeid, M. Ouaf","doi":"10.3233/jae-220287","DOIUrl":"https://doi.org/10.3233/jae-220287","url":null,"abstract":"In this study, we focused on the heat transfer through a uniformly inclined rectangular duct caused by the electro-osmotic peristaltic flow of an unsteady non-Newtonian nanofluid. With couple stress, the fluid obeys the Papanastasiou model. The flow is through a porous medium that follows Darcy’s law in a modified form. In addition, Dufour and Soret effects, mixed convection, the impacts of a chemical reaction, and the effects of viscous couple stress dissipation are all considered. The governing equations that explain the velocity, temperature, and concentration of nanoparticles are simplified when wave transformation is used. The homotopy perturbation method was used to solve these equations analytically. Additionally, a collection of figures is used to discuss and visually illustrate the consequences of the physical characteristics. In fact, the modified Darcy’s law makes the velocity gradient appear in the momentum equation, which increases the contribution of the velocity gradient to the velocity profile. In addition, the electro-osmotic parameter and Helmholtz-Smoluchowski velocity have a significant impact on the velocity gradient’s direction, as well as the velocity gradient’s ability to be either positive or negative, depending on their values. In addition, in the case of forced convection, the values of the Nusselt number and the Sherwood number are highly affected by the value of Helmholtz–Smoluchowski velocity. The current findings have applications in biology and medicine, particularly in cancer therapy, which involves peristaltic blood pumps(arteries) and suspended gold nanoparticles (nanofluid). According to our knowledge, no prior studies have merged the couple stress Papanastasiou model and the modified Darcy’s law.","PeriodicalId":50340,"journal":{"name":"International Journal of Applied Electromagnetics and Mechanics","volume":"4 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80207107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploiting TFET-based technology for energy-efficient STT-MRAM cells 利用基于tfet的节能STT-MRAM电池技术

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-30 DOI: 10.3233/jae-220300

Santiago S. Pérez, Alessandro Bedoya, Luis Miguel Prócel, Ramiro Taco

引用次数: 0

Analysis of rotor fatigue characteristics of permanent magnet synchronous motor spindle in eccentric state 永磁同步电机主轴偏心状态下转子疲劳特性分析

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-26 DOI: 10.3233/jae-220236

Haining Zhao, Shenbo Yu

引用次数: 0

The use of an LSTM-based autoencoder for measurement denoising in process tomography 使用基于lstm的自编码器在过程断层扫描中进行测量去噪

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-23 DOI: 10.3233/jae-230013

G. Kłosowski, T. Rymarczyk, D. Wójcik

引用次数: 0

Multi physical comprehensive design of a new type of FeCo based high speed permanent magnet motor 一种新型FeCo型高速永磁电机的多物理综合设计

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-23 DOI: 10.3233/jae-220190

Peng-long Hou, B. Ge, Dajun Tao, Bo Pan, Shuqi Liu

{"title":"Multi physical comprehensive design of a new type of FeCo based high speed permanent magnet motor","authors":"Peng-long Hou, B. Ge, Dajun Tao, Bo Pan, Shuqi Liu","doi":"10.3233/jae-220190","DOIUrl":"https://doi.org/10.3233/jae-220190","url":null,"abstract":"In order to solve the problem that the design of high-speed permanent magnet motor (HSPMM) is constrained by multi-physical fields, this paper starts with the comprehensive study of multi physical fields, introduces the finite element calculation model of rotor strength-rotor dynamics-electromagnetic field-fluid field and temperature field, carries out the comprehensive design of a 100 kW, 18 000 r/min FeCo based HSPMM, and gives the detailed and complete research process of the main parameters of HSPMM under multi-physical field constraints. First, the initial dimensions of the motor are obtained by electromagnetic and mechanical design theory. Secondly, the influence of design parameters on rotor stress is analyzed in detail, including the influence of bearing rigidity, impeller mass, rotor diameter, rotor core length and gyroscopic effect on critical speed. Subsequently, the electromagnetic characteristics of the motor are comprehensively studied, the cooling system is designed in the Flow-Heat coupling calculation model and the temperature field is studied. Finally, the prototype test verifies the correctness and validity of the comprehensive research method of multi physical field.","PeriodicalId":50340,"journal":{"name":"International Journal of Applied Electromagnetics and Mechanics","volume":"38 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77794567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Position control based on Gaussian function applied on magneto-rheological fluid disc brake of a hybrid mechanical device (MR brake - DC motor) 基于高斯函数的磁流变液盘式制动器混合机械装置(磁流变制动器-直流电机)位置控制

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-21 DOI: 10.3233/jae-220302

I. Rocha-Gómez, O. Susarrey-Huerta, A. Aguilar-Pérez, J.C. Suárez-Calderón, J. A. Flores-Campos, D. Desiderio-Maya, M. Cruz-Deviana, J. Cortés-Pérez, S. G. Torres-Cedillo, A. Reyes-Solís

{"title":"Position control based on Gaussian function applied on magneto-rheological fluid disc brake of a hybrid mechanical device (MR brake - DC motor)","authors":"I. Rocha-Gómez, O. Susarrey-Huerta, A. Aguilar-Pérez, J.C. Suárez-Calderón, J. A. Flores-Campos, D. Desiderio-Maya, M. Cruz-Deviana, J. Cortés-Pérez, S. G. Torres-Cedillo, A. Reyes-Solís","doi":"10.3233/jae-220302","DOIUrl":"https://doi.org/10.3233/jae-220302","url":null,"abstract":"This article presents an angular position control, based on the Gaussian function, of a Magneto-Rheological fluid disc brake (MR brake) driven by a DC motor. Our proposed control strategy is to apply a continuous magnetic flux density to the MR brake, which will be maximum when the proportional controller of the DC motor reaches the desired position to brake the hybrid device. The MR brake controller activates a braking torque that adopts the behavior of the Gaussian function instead of a pulsed braking torque as provided by other commonly used controllers (On-Off controllers). The response of the MR brake controller, which is presented in a closed-loop feedback system, depends on the angular position error of the shaft and a tuning parameter representing the critical angular position at which the magnetic flux density, which is applied to the MR brake, reaches 60.65% of its maximum value. The advantage is to avoid knowing the dynamic parameters, such as the inertia of the mechanical device or its speed, and to reject these perturbations by a simple tuning parameter of the MR brake. To show the effectiveness of the proposed controller, the dynamic model of a slider-crank mechanism is considered. The results showed similar behavior as conventional controllers, where overshoot and oscillations were minimized. This behavior has been obtained in other research articles using controllers that require a greater amount of data processing.","PeriodicalId":50340,"journal":{"name":"International Journal of Applied Electromagnetics and Mechanics","volume":"62 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88505041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forecasting top oil temperature for UHV reactor using Seq2Seq model with convolutional block attention mechanism 利用带卷积块注意机制的Seq2Seq模型预测特高压反应堆顶油温度

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-21 DOI: 10.3233/jae-230022

Hao Jiang, Hongwei Zhang, Jing Chen, Sa Xiao, Xiren Miao, Weiqing Lin

引用次数: 0

Study of electrical volume-conductivity, tensile strength, and electromagnetic shielding effectiveness of coconut fiber composite 椰子纤维复合材料的电导率、抗拉强度和电磁屏蔽性能研究

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-21 DOI: 10.3233/jae-220295

D. Permata, W. Widyawati, H. H. Sinaga, N. Purwasih, S. Widiarto

{"title":"Study of electrical volume-conductivity, tensile strength, and electromagnetic shielding effectiveness of coconut fiber composite","authors":"D. Permata, W. Widyawati, H. H. Sinaga, N. Purwasih, S. Widiarto","doi":"10.3233/jae-220295","DOIUrl":"https://doi.org/10.3233/jae-220295","url":null,"abstract":"Natural fiber composite becomes a necessity encountering the issue of eco-friendly materials. The application of natural fiber composite as electromagnetic interference (EMI) shielding enclosures has not been studied extensively. This study aims to investigate the performance of the coconut fiber composite as EMI shielding enclosure material. Enhancement of the electrical volume-conductivity of the composite was made by polymerization of coconut fiber with polyaniline and doping the multiwall carbon nanotubes to epoxy resin. Three types of composites were made with different weight percentages of coconut fiber: 5, 10, and 15 wt%. The highest volume-conductivity and shielding effectiveness of coconut fiber composite are 0,0458 S/m and −7.69 dB from the highest weight percentage of coconut fiber (15 wt%). While the highest tensile strength (26.78 MPa) resulted from the lowest weight percentage (5 wt%). This study shows the coconut fiber composite could potentially be the material of EMI shielding enclosure though their electrical conductivity and tensile strength should be increased.","PeriodicalId":50340,"journal":{"name":"International Journal of Applied Electromagnetics and Mechanics","volume":"3 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73262334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of the interaction between human body and electromagnetic waves near resonance using machine learning 基于机器学习的近共振电磁波与人体相互作用建模

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-21 DOI: 10.3233/jae-230025

Moez Hizem, Aymen Ben Saada, Sofiane Ben Mbarek, F. Choubani

{"title":"Modeling of the interaction between human body and electromagnetic waves near resonance using machine learning","authors":"Moez Hizem, Aymen Ben Saada, Sofiane Ben Mbarek, F. Choubani","doi":"10.3233/jae-230025","DOIUrl":"https://doi.org/10.3233/jae-230025","url":null,"abstract":"Human-Like digital models have been around for quite some time. They significantly contributed to the increase of the accuracy of the whole-body-average specific absorption rate estimations. However, the anatomical and morphological diversity between human beings has not yet been embraced by the actual anthropomorphic models for several reasons such as financial costs, excessive exposure of volunteers to electromagnetic waves, and the required number of technical experts needed to build one voxelized model. Recently, machine learning has been used to reduce the complexity of certain tasks. Yet, at least, having an anthropomorphic model per nation is still far away to achieve. To reduce the building cost of new human-like models, we build on the success of anthropomorphic models and machine learning to derive mathematical equations that make it possible to predict the Whole-body-average SAR from low frequencies up to twice the resonance frequency without any cost and excessive electromagnetic exposure of new volunteers. The completely new machine learning based equations are applicable for any age, ethnic group, and for both genders. They depend only on the human body’s morphological (height and weight) and anatomical parameters (tissue weights). In this work, we first address the whole-body-average SAR peak and we present a set of two estimators. In second, we show that the resonance frequency is not only a function of the height of the human body, to end up with a third estimation for the resonance frequency. These completely new estimators are finally combined into a novel function that links the whole-body-average SAR to the frequency. It shows the accurate prediction for low frequencies (10 MHz) up to twice the resonance frequency. The derived estimators for the maximum WBASAR and the resonance frequencies showed better results for low frequency exposure.","PeriodicalId":50340,"journal":{"name":"International Journal of Applied Electromagnetics and Mechanics","volume":"87 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79378931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of surface-inset Halbach machines with trapezoidal mixed grade magnets 梯形混合磁体表面嵌装式哈尔巴赫机床的研究

IF 0.6 4区工程技术

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-06-19 DOI: 10.3233/jae-220192

Youyuan Ni, Zhiwei Qiu, B. Xiao

引用次数: 0