Ain Shams Engineering Journal最新文献

An Improved digital multi-resonant controller for 3 [formula omitted] grid-tied and standalone PV system under balanced and unbalanced conditions 平衡和不平衡条件下 3 [省略公式] 并网和独立光伏系统的改进型数字多谐振控制器

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-08-30 DOI: 10.1016/j.asej.2024.103036

Kamran Zeb, T.D.C. Busarello, Waqar Uddin, Muhammad Khalid

{"title":"An Improved digital multi-resonant controller for 3 [formula omitted] grid-tied and standalone PV system under balanced and unbalanced conditions","authors":"Kamran Zeb, T.D.C. Busarello, Waqar Uddin, Muhammad Khalid","doi":"10.1016/j.asej.2024.103036","DOIUrl":"https://doi.org/10.1016/j.asej.2024.103036","url":null,"abstract":"With the exponential penetration of Photovoltaic (PV) plants into the power grid, advanced current controllers should be employed in grid-tied power converters in order to efficiently inject high quality current synchronized with the grid voltage. This research presents the modeling and design of a digital multi-resonant controller to feed-in high quality current. The novelty lies in designing the control in a superior manner to conventional techniques. As an outcome, practical engineers discover an easy, fast, robust, and accurate control method. The proposed 5-kVA PV system can inject active and reactive power effectively while staying resilient to imbalance scenarios. Synchronization is accomplished via a synchronous reference frame (SRF) based phase locked loop (PLL) that performs effectively even with distorted and nonideal grids. The practicality and efficacy of the developed controller is verified both in simulation (PSIM and code composer studio) and Hardware in Loop (HIL) via Typhoon 402 and TMS32F28335 experiments. The devised controller is evaluated in both grid-connected and standalone modes under a wide range of disturbances, distortions, and non-ideal conditions. The simulation and HIL results validate the robustness, fastness, resilience, and effectiveness of the proposed controller compared with a well-tuned conventional proportional resonant (PR) controller.","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Analysis of Monte-Carlo collision method with argon and helium background gases at different RF-powers and pressures in ELTRAP device 分析 ELTRAP 设备中不同射频功率和压力下氩气和氦气背景气体的蒙特卡洛碰撞方法

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-08-14 DOI: 10.1016/j.asej.2024.102999

Hassan Ali, Nisar Ali, Ahmed Sayed M. Metwally, Arshad Ali, Musarrat Jabeen

{"title":"Analysis of Monte-Carlo collision method with argon and helium background gases at different RF-powers and pressures in ELTRAP device","authors":"Hassan Ali, Nisar Ali, Ahmed Sayed M. Metwally, Arshad Ali, Musarrat Jabeen","doi":"10.1016/j.asej.2024.102999","DOIUrl":"https://doi.org/10.1016/j.asej.2024.102999","url":null,"abstract":"The impact of confined excited electron with argon and helium background gases is systematically studied using Monte-Carlo particle-in-cell simulations for various low powers (1.0–8.0 V) and pressures (1.50 × 10 Torr and 3.75 × 10 Torr) in ELTRAP device. The results of these numerical studies showed that the heating effect of the excited confined electron plasma density of 5 × 10 m within the Brillouin limit () resulted a higher temperature (eV) and increased collision time in argon as a background gas as compared to helium gas. The axial temperature (eV) has a higher value than the radial temperature (eV) and increases with the increase in RF-Powers and pressures. The maximum kinetic energy of excited confined electrons occurred in the range of 0.03–0.04 m radially due to the maximum self-electric field intensity in simulation time up to 20 µs. The electric field decreases when the collision frequency is increased. The secondary electron production and ionization are higher than expected at a background pressure of 1.50 × 10 Torr as compared to 3.75 × 10 Torr. The remaining secondary electrons were always ejected from the symmetry axis of the device. It was observed that the production of secondary electrons is proportional to the ionization rate.","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Theoretical and experimental study on determining the reasonable cropping process parameters of precision cropping system 确定精耕细作系统合理耕作过程参数的理论与试验研究

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-08-11 DOI: 10.1016/j.asej.2024.102958

{"title":"Theoretical and experimental study on determining the reasonable cropping process parameters of precision cropping system","authors":"","doi":"10.1016/j.asej.2024.102958","DOIUrl":"10.1016/j.asej.2024.102958","url":null,"abstract":"<div><p>A new controllable rotary bending cracking cropping method, based on V-notch stress concentration, is proposed to address the drawbacks of the metal bar separation process, such as poor cross-section quality and low material utilization. The controlled rotary bending cracking cropping experimental device is developed to implement this method. Subsequently, a mechanical model for the precision cropping process is established using material strength theory, and a load control strategy based on fracture mechanics theory is applied to predict cropping efficiency. Experimental verification is then conducted, with results indicating that increasing notch depth improves cropping efficiency and cross-section quality. Additionally, maintaining constant stress intensity factor amplitude (Δ<em>K</em> = 0.4<em>K</em><sub>c</sub>) and notch depth of 5 mm yields optimal cropping effects. The precision cropping process leverages the fatigue crack propagation mechanism to explain the cropping process, offering theoretical guidance for selecting appropriate parameters in subsequent precision cropping processes.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924003332/pdfft?md5=70b05a02b6cdafc4690c92c1a8e2070b&pid=1-s2.0-S2090447924003332-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141964344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Common architectural characteristics of traditional courtyard houses in Erbil city 埃尔比勒市传统四合院的共同建筑特点

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-08-10 DOI: 10.1016/j.asej.2024.103003

Faris Ali Mustafa, Lana Abubaker Ali

引用次数: 0

Optimized quantum LSTM using modified electric Eel foraging optimization for real-world intelligence engineering systems 利用改进的电鳗觅食优化技术优化量子 LSTM，用于真实世界的智能工程系统

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-08-02 DOI: 10.1016/j.asej.2024.102982

Mohammed A.A. Al-qaness, Mohamed Abd Elaziz, Abdelghani Dahou, Ahmed A. Ewees, Mohammed Azmi Al-Betar, Mansour Shrahili, Rehab Ali Ibrahim

{"title":"Optimized quantum LSTM using modified electric Eel foraging optimization for real-world intelligence engineering systems","authors":"Mohammed A.A. Al-qaness, Mohamed Abd Elaziz, Abdelghani Dahou, Ahmed A. Ewees, Mohammed Azmi Al-Betar, Mansour Shrahili, Rehab Ali Ibrahim","doi":"10.1016/j.asej.2024.102982","DOIUrl":"https://doi.org/10.1016/j.asej.2024.102982","url":null,"abstract":"The integration of metaheuristics with machine learning methodologies presents significant advantages, particularly in optimization and computational intelligence. This amalgamation leverages the global search capabilities of metaheuristics alongside the pattern recognition and predictive prowess of machine learning, facilitating enhanced convergence rates and solution quality in complex problem spaces. The Quantum Long Short-Term Memory (QLSTM) emerges as a highly efficient deep learning model tailored to tackle such intricate engineering problems. The QLSTM's architecture, comprising data encoding, variational, and quantum measurement layers, facilitates the effective encoding and processing of civil engineering data, leading to heightened prediction accuracy. However, the task of determining optimal values for QLSTM parameters presents challenges due to its NP-problem nature and time-consuming characteristics. To address this, we propose an alternative technique to optimize the QLSTM based on a modified Electric Eel Foraging Optimization (MEEFO). The MEEFO is a modified version of the original EEFO that applies triangular mutation operators to boost the search capability of the traditional EEFO. Thus, the MEEFO optimizes the QLSTM and boosts its prediction performance. To validate the efficacy of our proposed method, we conduct comprehensive experiments utilizing five real-world engineering datasets related to construction and structure engineering. The evaluation outcomes unequivocally demonstrate that the MMEFO significantly enhances the performance of the QLSTM.","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Flow analysis in different geometries for optimization of exhaust manifold in a locomotive diesel engine 优化机车柴油发动机排气歧管的不同几何形状流动分析

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-08-02 DOI: 10.1016/j.asej.2024.102974

{"title":"Flow analysis in different geometries for optimization of exhaust manifold in a locomotive diesel engine","authors":"","doi":"10.1016/j.asej.2024.102974","DOIUrl":"10.1016/j.asej.2024.102974","url":null,"abstract":"<div><p>A well-designed exhaust manifold has a positive effect on the efficiency of an engine and exhaust emissions. If the dimensions and geometric structure of the exhaust manifold are not designed in accordance with the pressure fluctuations of the fluid, this will have a negative effect on the velocity, temperature, density and pressure of the flow. In view of this and the high production costs of locomotive diesel engines, the pressure and velocity distributions in the exhaust manifold of a six-cylinder locomotive engine are investigated numerically in this study. Two different designs for the diesel engine are studied, taking into consideration the area in which the exhaust manifold will be mounted and the other engine parts. The pressure and velocity variations of the exhaust manifolds are compared via a computational fluid dynamics analysis, and analyses are performed using test data from a heavy-duty diesel engine at different power values (225, 450, 675, and 900 HP) and 1500 rpm, with the aim of finding the optimal design. Since the diameters at the cylinder outlets cannot be changed, the designs are created to fit within the existing area of the engine area The exhaust outlet is located in the middle of the manifold in the first model examined here, and is positioned close to the right-hand side of the manifold in the second model (the existing configuration). It is found that the flow becomes more efficient in the model in which the outlet is in the middle of the exhaust manifold.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924003496/pdfft?md5=6c3b8a0d66b3d4e1cc9badde5a87a254&pid=1-s2.0-S2090447924003496-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Entropy generation with ion-slip influx on peristaltic transition of hyperbolic tangent nanofluid of motile gyrotactic microorganisms and modified Darcy-Forchheimer characteristic 双曲切线纳米流体蠕动过渡时离子滑动流入产生的熵，以及运动陀螺微生物的修正达西-福克海默特性

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-08-01 DOI: 10.1016/j.asej.2024.102882

{"title":"Entropy generation with ion-slip influx on peristaltic transition of hyperbolic tangent nanofluid of motile gyrotactic microorganisms and modified Darcy-Forchheimer characteristic","authors":"","doi":"10.1016/j.asej.2024.102882","DOIUrl":"10.1016/j.asej.2024.102882","url":null,"abstract":"<div><p>In this theoretical paper, an investigation is conducted into the peristaltic transition of a hyperbolic tangent nanofluid that contains mobile gyrotactic microorganisms. This study examines the entropy generation resulting from magnetohydrodynamic (MHD) flow and heat transport. The analysis encompasses an anisotropically stenosed endoscope, which is influenced by Ion-slip, activation energy, viscous dissipation, Hall efficacy, Joule heating and entropy generation. The impacts of nonlinear thermal radiation and chemical processes with Soret and Dufour schemes are studied. The porous medium is described using a modified form of Darcy's principle involving a Forchheimer framework. The assumptions involve the extended wavelength besdes reduced Reynolds numeral. The homotopy perturbation strategy is employed to solve the resulting equations. The results show that the critical velocity rises as the local temperature Grashof numeral increases. Moreover, the study offers insights into the movement of digestive gastric fluid within the small intestine as the endoscope moves through.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002570/pdfft?md5=5b5614ba832da1a126268e998635b603&pid=1-s2.0-S2090447924002570-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Type-2 fuzzy ontology with Dendritic Neural Network based semantic feature extraction for web content classification 基于树枝状神经网络的第 2 类模糊本体与语义特征提取，用于网络内容分类

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-07-25 DOI: 10.1016/j.asej.2024.102973

{"title":"Type-2 fuzzy ontology with Dendritic Neural Network based semantic feature extraction for web content classification","authors":"","doi":"10.1016/j.asej.2024.102973","DOIUrl":"10.1016/j.asej.2024.102973","url":null,"abstract":"<div><p>Nowadays, Internet technology is developing very quickly, because of which webpages are generated exponentially. Web content categorization is mandatory to explore and search related webpages based on queries of users and becomes a dreary task. Most web content categorization methods ignore the contextual knowledge and semantic features of the web page. Pornographic webpage–filtering system does not deliver perfect extraction of advantageous datasets in unstructured web content. Such mechanisms take no reasoning ability to intellectually filter web content to categorize medical websites in adult content webpages. This study introduces a Type-2 Fuzzy Ontology with Dendritic Neural Network Based Semantic Feature Extraction for Web Content Classification (TFODNN-SFEWCC) method. The presented method mainly focused on the detection of different types of web content and blocking pornographic content. It uses the DNN model for the extraction of useful keywords from web pages and eliminates unwanted ones. In addition, the proposed technique employs type 2 fuzzy ontology for the automated classification of web content into multiple classes. The pigeon swarm optimization algorithm is applied to optimize the performance of the Dendritic Neural Network approach for hyperparameter tuning. The experimental evaluation of the proposed method occurs utilizing a web database, and the outcomes are studied under various aspects. The comprehensive comparison study highlighted the betterment of the proposed technique over other existing approaches.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924003484/pdfft?md5=713c6bd357c511a51836bfca1a8943ba&pid=1-s2.0-S2090447924003484-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141949577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal irregular generation and absorption of nanoscale energy transportation of thermodynamic material of a micropolar fluid 微极性流体热动力材料纳米级能量传输的热不规则生成和吸收

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-07-24 DOI: 10.1016/j.asej.2024.102948

{"title":"Thermal irregular generation and absorption of nanoscale energy transportation of thermodynamic material of a micropolar fluid","authors":"","doi":"10.1016/j.asej.2024.102948","DOIUrl":"10.1016/j.asej.2024.102948","url":null,"abstract":"<div><p>Micropolar fluids have received a lot of interest for their industrial uses due to their distinctive microstructures. The diversified utilization of heat and mass transport process of micropolar material induced by shrinkable curved surface in raising the efficiency of numerous industrial processes has been found. For instance, extrusion procedure, fiber technology, polymer extraction, etc. The primary motive for conducting this disquisition is to explore the transmission of heat and mass in the flow of a micropolar (non-Newtonian) fluid processing vortex viscosity and micro-inertial aspects over a curved stretching/shrinking sheet. Physical factors of irregular heat generation/absorption rate along with linear radiative heat flux are included in thermal transport whereas mass diffusion involves the impact of Arrhenius kinetics and chemically reactive species. The basic constitutive equation is modeled in curvilinear coordinates after obliging conservation laws. A set of similar variables is implemented to change the governing formulation into the dimensionless format. Multiple branch solutions are attained via the bvp4c procedure. Associated distributions (velocity, micro rotation, temperature, and concentration) are organized against the sundry parameters for both branches and interpreted through sketches. Relevant quantities versus different parameters are also encountered through tabular data. The credibility of computed results is assumed by making agreement with previous studies. After a thorough insight into this work, it is inferred that multiple solutions are noted for distinct values of suction and material parameters.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S209044792400323X/pdfft?md5=92cf599bd01b11504dffaea1c0c1a30e&pid=1-s2.0-S209044792400323X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of compressive strength of recycled concrete using gradient boosting models 利用梯度提升模型预测再生混凝土的抗压强度

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-07-24 DOI: 10.1016/j.asej.2024.102975

{"title":"Prediction of compressive strength of recycled concrete using gradient boosting models","authors":"","doi":"10.1016/j.asej.2024.102975","DOIUrl":"10.1016/j.asej.2024.102975","url":null,"abstract":"<div><p>The construction industry is shifting towards sustainability, emphasizing the need for innovative materials. Recycled Aggregate Concrete (RAC), utilizing recycled aggregates, emerges as a promising eco-friendly solution to minimize waste and resource utilization. However, accurately predicting its compressive strength (CS) is challenging due to varying composition and properties. This study addresses this issue by employing machine learning models, specifically five gradient boosting algorithms: Gradient Boosting Machine (GBM), LightGBM, XGBoost, Categorical Gradient Boost (CGB), and HistGradientBoosting (HGB). A total of 314 mixes from relevant published literature were aggregated to train the models. These models are meticulously fine-tuned through hyperparameter optimization for optimal predictive performance. The study also introduces SHAP (SHapley Additive exPlanations) algorithms for model interpretability, elucidating feature contributions to predictions. The results revealed that among the five gradient boosting models, CGB demonstrated the highest R2 value of 92% on the testing set, while LightGBM exhibited the lowest Coefficient of Determination (R2) value of 88%. Additionally, CGB achieved the lowest Root Mean Square Error (RMSE) of approximately 4.05, whereas XGBoost showed the highest RMSE of around 4.8. Furthermore, for Mean Absolute Error (MAE), LightGBM recorded the lowest value of approximately 3.16, while HGB yielded the highest MAE of about 3.8. The SHAP analyses reveal influential features impacting RAC strength, highlighting the significance of cement, water, sand, and recycled aggregate water absorption in predicting RAC compressive strength.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924003502/pdfft?md5=896e649ced247c47e0f5b708d9405e8f&pid=1-s2.0-S2090447924003502-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0