Cogent Engineering最新文献

Evaluating road work site safety management: A case study of the Amman bus rapid transit project construction 评估道路施工现场的安全管理：安曼快速公交项目施工案例研究

IF 1.9

Cogent Engineering Pub Date : 2023-12-21 DOI: 10.1080/23311916.2023.2283320

L. Shbeeb

引用次数: 0

Toward optimizing scientific workflow using multi-objective optimization in a cloud environment 在云环境中使用多目标优化技术优化科学工作流程

IF 1.9

Cogent Engineering Pub Date : 2023-12-19 DOI: 10.1080/23311916.2023.2287303

Shabina Ghafir, M. A. Alam, Farheen Siddiqui, Sameena Naaz, S. S. Sohail, D. Madsen

引用次数: 0

Technology capability of Indonesian medium-sized shipyards for ship production using Product-oriented Work Breakdown Structure method (case study on shipbuilding of Mini LNG vessel) 印度尼西亚中型造船厂利用面向产品的工作分解结构法进行船舶生产的技术能力（小型液化天然气船造船案例研究）

IF 1.9

Cogent Engineering Pub Date : 2023-12-18 DOI: 10.1080/23311916.2023.2284534

Buana Ma’ruf, M. I. Mustajib, A. Bisri, Suwahyu Suwahyu, E. Suwarni, N. Nurcholis, Rina Rina, Syaiful Bahri, Moh. Muria Armansyah Sugiarto, Bagus Fadhilah Nur Imani, Shinta Jihar Akif Rahadi

引用次数: 0

NREL Phase VI wind turbine blade tip with S809 airfoil profile winglet design and performance analysis using computational fluid dynamics 利用计算流体动力学进行 NREL 第六阶段风力涡轮机叶尖 S809 翼面翼片设计和性能分析

IF 1.9

Cogent Engineering Pub Date : 2023-12-18 DOI: 10.1080/23311916.2023.2293562

Girma Dejene, V. Ancha, A. Bekele

引用次数: 0

Revisiting multi-domain empirical modelling of light-emitting diode luminaire 重新审视发光二极管灯具的多域经验模型

IF 1.9

Cogent Engineering Pub Date : 2023-12-14 DOI: 10.1080/23311916.2023.2288423

S. K R, Tanuja Shailesh

引用次数: 0

Analysis of probabilistic optimal power flow in the power system with the presence of microgrid correlation coefficients 存在微电网相关系数的电力系统中概率最优电力流分析

IF 1.9

Cogent Engineering Pub Date : 2023-12-12 DOI: 10.1080/23311916.2023.2292325

Farhad Zishan, Ehsan Akbari, O. Montoya

引用次数: 0

Congestion management ancillary service at the distribution level through grid-connected microgrid based on DLMP and HFPSO-TOPSIS approach 基于 DLMP 和 HFPSO-TOPSIS 方法的并网微电网配电级拥塞管理辅助服务

IF 1.9

Cogent Engineering Pub Date : 2023-12-08 DOI: 10.1080/23311916.2023.2288411

Kalyani Makarand Kurundkar, G. Vaidya

{"title":"Congestion management ancillary service at the distribution level through grid-connected microgrid based on DLMP and HFPSO-TOPSIS approach","authors":"Kalyani Makarand Kurundkar, G. Vaidya","doi":"10.1080/23311916.2023.2288411","DOIUrl":"https://doi.org/10.1080/23311916.2023.2288411","url":null,"abstract":"Abstract The rising use of electric mobility has weakened the relationship between wholesale energy prices and price-responsive demand such as charging Electric vehicles (EV). This adversely affects network flows. The situation can further worsen, causing congestion in the distribution network and a rise in energy prices. In this paper, an attempt is made to resolve this issue through Distributed generators (DGs) placed in a grid-connected microgrid. The authors propose a methodology based on “Distribution Locational Marginal pricing (DLMP)” and the use of “Hybrid optimal Firefly Particle Swarm Optimization” with “TOPSIS” (HFPSO-TOPSIS) approach for optimal DG sizing in this methodology. The methodology consists of two stages. The first stage is locating DGs on the bus, and the second stage is sizing DGs and their participation in providing ancillary service of congestion management through a grid-connected microgrid. The method is tested on a “modified IEEE 33 bus radial active distribution system”. Two different system conditions in which congestion can occur are analyzed and congestion is successfully removed by this proposed method. Power Loss reduction of more than 75% is achieved in each case after the implementation of the proposed methodology. Minimization of voltage deviation and maximization of voltage stability is achieved. The generation cost is minimized by almost 70%. The results obtained show better performance of HFPSO-TOPSIS as compared with other existing techniques. The results obtained exhibit that the methodology is generic and can be implemented for any congestion condition and can successfully remove congestion with improvement in system performance bringing social welfare.","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"10 19","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138589869","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

Dynamic investigation of 650 W roof-top horizontal wind turbine rotor system supported by radial permanent magnet bearings 由径向永磁轴承支撑的 650 W 屋顶水平风力涡轮机转子系统的动态研究

IF 1.9

Cogent Engineering Pub Date : 2023-12-08 DOI: 10.1080/23311916.2023.2288436

G. Chalageri, S. Bekinal, M. Doddamani

{"title":"Dynamic investigation of 650 W roof-top horizontal wind turbine rotor system supported by radial permanent magnet bearings","authors":"G. Chalageri, S. Bekinal, M. Doddamani","doi":"10.1080/23311916.2023.2288436","DOIUrl":"https://doi.org/10.1080/23311916.2023.2288436","url":null,"abstract":"Abstract The present work focuses on the rotor dynamic properties of a 650 W roof-top horizontal axis windturbine (HAWT) rotor supported by radial permanent magnet bearings (PMBs). Radial PMBs were designed and optimized concerning the rotor of a wind turbine for maximum stiffness. Initially, a generalized design and optimization process for multi-ring radial PMBs (MrRPMBs) with a radial air gap is presented to get the maximized force and stiffness per magnet volume. The proposed mathematical model is validated using the Finite Element (FE) analysis tool Ansys for chosen rotor dimensions. Then, the same optimization technique was extended for HAWT rotor bearings to extract the optimized multi-ring radial bearing parameters. The dynamic investigation is performed to study the effect of bearing parameters on the rotor-bearing modal frequency and dynamic amplitude of a rotor. Firstly, the dynamic investigation was performed for the conventional deep groove ball bearings (DGBs) supported rotor, considering the effect of bearing span length. Secondly, the dynamic response was analyzed for the rotor system through a hybrid bearing set (HBS) by replacing DGB with PMB. Finally, DGBs are completely replaced by radial PMBs. FEanalysis was performed using the Ansys workbench rotor dynamic tool for all the bearing combinations.","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"46 34","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138588343","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

Modeling of Thermal Performance and Mechanical Properties of Concrete Blocks Incorporating Plastic Bottle Waste with Crushed Clay Bricks as Coarse Aggregates 以塑料瓶废料和碎粘土砖为粗骨料的混凝土砌块热性能和机械性能建模

IF 1.9

Cogent Engineering Pub Date : 2023-12-07 DOI: 10.1080/23311916.2023.2283334

Abla Marie-Josée Nadège Kougnigan, John Mwero, Raphael Mutuku

{"title":"Modeling of Thermal Performance and Mechanical Properties of Concrete Blocks Incorporating Plastic Bottle Waste with Crushed Clay Bricks as Coarse Aggregates","authors":"Abla Marie-Josée Nadège Kougnigan, John Mwero, Raphael Mutuku","doi":"10.1080/23311916.2023.2283334","DOIUrl":"https://doi.org/10.1080/23311916.2023.2283334","url":null,"abstract":"Abstract This research aims to examine the mechanical characteristics and thermal performance of concrete masonry blocks made from clay waste bricks that have been crushed, used as coarse aggregates, and incorporated plastic bottles. A simulation of the heat transfer of blocks was also made using Finite Element Method. The study uses plastic bottles of 350 ml of volume and clay brick waste as a complete replacement for traditional aggregates to produce lightweight concrete. The blocks utilized in the study were 150 mm × 200 mm×400 mm in size. The blocks underwent testing for various properties such as water absorption, ultrasonic pulse velocity, density, compressive strength, and thermal conductivity to ASTM C140 standards. The incorporation of plastic bottles created 23% voids in the blocks for the density test, and the results revealed that the block’s performance met the ASTM C129 standards for load-supporting blocks with regard to its capacity to absorb water (134.9 kg/m3), lightness, and strength (12MPa). Additionally, the study revealed a decrease in thermal conductivity by more than 50% compared to conventional concrete blocks without bottles; a result which was confirmed by the blocks’ heat transfer simulation. In conclusion, based on the fact that the blocks studied met the mechanical standards for load-bearing masonry units, it is proposed that the construction sector consider incorporating these types of blocks in areas where heat insulation is necessary to reduce building energy consumption related to cooling.","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"41 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138593618","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

Studying hydrodynamic friction in the oil ring/cylinder liner contact of an internal combustion engine 研究内燃机油环/缸套接触处的流体动力摩擦

IF 1.9

Cogent Engineering Pub Date : 2023-12-07 DOI: 10.1080/23311916.2023.2289261

Brahim Menacer, Sunny Narayan, Faisal O. Mahroogi

引用次数: 0