Journal of Engineering Research最新文献

{"title":"Technical-economic evaluation of a 94.5 MW wind power plant at different elevation heights. A case study in Peru's countryside","authors":"Priscila Scarlet Portocarrero Mendoza","doi":"10.1016/j.jer.2024.03.020","DOIUrl":"10.1016/j.jer.2024.03.020","url":null,"abstract":"<div><div>The scarce promotion of wind energy generation in Peru leads to using fossil fuels and polluting the environment with greenhouse effect gasses. Furthermore, the countryside at height provides some of the areas with great wind resource potential and it has not been exploited yet. This study aims to examine five cases in the Peruvian countryside located at heights ranging from 2400 to 4200 m above sea level to explore the effect of elevation height in energy production and economic indicators. Wind data from the Global Wind Atlas and POWER were used for each area, and a comparative analysis was conducted to assess the accuracy of these datasets. For the economic analysis, break-even Levelized Cost of Energy and Net Present Value were calculated. The findings indicate that the Levelized Cost of Energy was the lowest, ranging between 35 and 39 $/MWh, for elevations between 3000 and 4200 m above sea level. Conversely, the highest costs, ranging from 50 to 79 $/MWh, were observed at lower elevations. This suggests that these high-altitude provinces offer significant wind energy potential, making them suitable for wind farm development.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 1089-1103"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140792436","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}

{"title":"Multi-modular bridge-type FCL for enhancing FRT capability of VSC-HVDC connected offshore wind plants during AC faults","authors":"M. Firouzi","doi":"10.1016/j.jer.2024.03.005","DOIUrl":"10.1016/j.jer.2024.03.005","url":null,"abstract":"<div><div>This paper presents a novel concept Multi-Modular Bridge-Type Fault Current Limiter (MMBFCL) for enhancing the fault ride-through (FRT) capability in Voltage Source Converter (VSC)-based High-Voltage Direct-Current (HVDC) systems. The MMBFCL can be directly connected to HVDC system in ac grid side without series connection of semiconductor switches and series injection transformers. Also, the limiting resistor of each module is determined based on binary arrangements to provide a multi-step insertion resistor BFCL to limit the fault current and enhance the FRT capability under different voltage sag levels. The principle operation and control system of the MMBFCL is described. Then, the performance of the MMBFCL for enhancing the FRT is validated through time domain simulations by PSCAD/EMTDC software in a HVDC integrated wind farm system. Also, the performance of the MMBFCL is compared with the single-modular BFCL (SMBFCL). Simulation results reveal that the MMBFCL compensate the voltage sag for each voltage sag levels without any over voltage at the HVDC terminal. Also, it has superior performance than SMBFCL.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 1358-1365"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140274633","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}

{"title":"Analysis of lateral dynamic response characteristics of drilling riser during installation of deep-water Christmas tree","authors":"Sun Qiaolei ,&nbsp;Liu Yuwei ,&nbsp;Xia Le ,&nbsp;Feng Ding ,&nbsp;Deng Long ,&nbsp;Wang Jiangang","doi":"10.1016/j.jer.2023.12.003","DOIUrl":"10.1016/j.jer.2023.12.003","url":null,"abstract":"<div><div>In this research, in order to investigate the safety risk of drilling riser during deep-water Christmas tree lowering process and determine the basic parameters for the safety calculation of the upper part of the Christmas tree, wave-current force calculation method is explained based on modified Morison equation. According to differential element method, the dynamic equations of vertical and horizontal bending of riser under wave and current conditions are derived and equation solution method and calculation stability conditions are analyzed. By combining the upper and lower boundaries of riser during Christmas tree connection and environmental load factors, dynamic responses of riser under different wave, top tension, platform drift, operating water depth and other parameters are investigated. The obtained results show that maximum lateral displacement, corresponding water depth and bending moment of riser as well as the amplitude and period of displacement fluctuation at riser bottom are increased with the increase of wave velocity and water depth. It is also found that increase of top tension reduced the maximum lateral displacement of riser and increased corresponding water depth, but excessive tension increased the fluctuations of displacement and bending moment at riser bottom. Increase of platform drift increased maximum lateral displacement fluctuation range, bottom string displacement and bending moment of the riser and decreased corresponding maximum displacement water depth. Drift is found to increase the fluctuations of dynamic parameters at riser bottom. Increase of operating water depth increased riser maximum lateral displacement and decreased the period and amplitude of bottom bending moment fluctuations; also, maximum water depth position approached to \"1/3\" position on sea surface.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 1250-1262"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139014080","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}

{"title":"A fuzzy Delphi-AHP framework for identifying and prioritizing factors affecting students’ satisfaction in public high schools: Insights from the United Arab Emirates","authors":"Hanan Elkadry ,&nbsp;Mohammad Shamsuzzaman ,&nbsp;Sujan Piya ,&nbsp;Salah Haridy ,&nbsp;Hamdi Bashir ,&nbsp;Mohammad Khadem","doi":"10.1016/j.jer.2023.12.008","DOIUrl":"10.1016/j.jer.2023.12.008","url":null,"abstract":"<div><div>The aim of this investigation is to identify and prioritize factors impacting students' contentment in public high schools within the United Arab Emirates (UAE). The study employs a mixed-method research approach through a framework integrating fuzzy Delphi method and the Analytic Hierarchy Process (AHP). This facilitates explicit prioritization of factors, leading to dependable results. The study reveals that the most critical factors influencing students' satisfaction in public high schools in the UAE are the assessment method and various support services, such as cafeteria facilities, availability of administrative personnel during office hours, and pertinent information in the curriculum. Additionally, an appealing learning environment, convenient transportation, IT support, and teachers' role especially friendliness/approachability also play vital roles. Though the study's findings may not be universally applicable, they hold potential as a valuable reference for broader applications across diverse educational sectors and geographic locations. Consequently, these research outcomes provide deeper insights into students' satisfaction, enabling public high school administrations to develop comprehensive guidelines for optimizing services offered to their students.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 596-610"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189086","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}

{"title":"Blockchain technology design based on food safety and halal risk analysis in the beef supply chain with FMEA-FTA","authors":"Hana Catur Wahyuni ,&nbsp;Mochamad Alfan Rosid ,&nbsp;Rima Azara ,&nbsp;Adam Voak","doi":"10.1016/j.jer.2024.02.002","DOIUrl":"10.1016/j.jer.2024.02.002","url":null,"abstract":"<div><div>Beef has an important role in the health of the body. Food safety and halal are the main factors for consumers in purchasing beef. However, in reality, several activities in the beef supply chain result in status changes to be unsafe and not halal for consumption. This occurs due to weak food safety and halal supervision in the beef supply chain system. Therefore, this study proposes the use of blockchain technology to strengthen the food safety and halal supervision system in the beef supply chain. The objectives of this study are (1) to identify food safety and halal risk factors, and (2) to develop a blockchain technology design for mitigating food safety and halal risks in the beef supply chain. This research uses the FMEA method to measure risks and FTA for risk analysis. The results showed that 30 risks were identified in the beef supply chain. The highest risk is the absence of a halal certificate on the product. The 30 risks are grouped into 4 risks that are included in extreme priority risk, 11 risks in high priority risk, 4 risks in moderate risk, and 11 risks as acceptable risk. Based on these results, the role of blockchain technology to minimize risk is in the flow of data, and transactions will be easier to track, more transparent, and safer to use as part of the control and supervision system for food safety and halal standards in the beef supply chain. This research has implications for transparency in the supply chain, the accuracy of product track records, prevention of food poisoning, improving halal compliance, risk management and thus increasing consumer confidence.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 590-595"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139890570","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}

{"title":"Development and biomechanical testing of full-scale human brain simulant","authors":"Promasree Majumdar ,&nbsp;Gurpreet Singh ,&nbsp;Arnab Chanda","doi":"10.1016/j.jer.2024.02.016","DOIUrl":"10.1016/j.jer.2024.02.016","url":null,"abstract":"<div><div>In 21st century, traumatic Brain Injuries (TBI) due to blast exposure or head impacts in contact sports, accidents are one of most critical research area. But the area of TBI is poorly investigated due to the limitation of brain tissue availability and related ethical/biosafety issues. In general, the brain tissue is difficult to acquire after the autopsy and test in laboratorial settings. In this work, a full-size human brain simulant was developed using a biofidelic multi-part polymeric material poured into a negative mould which was designed and 3D printed. Based on the number of mild to moderate traumatic brain injury cases reported in the literature, three TBI prominent locations were chosen. The prefrontal cortex of frontal lobe, top portion of parietal lobe and temporal lobe of right hemisphere of the brain were the locations where the experiments were conducted under compressive loading conditions. The load versus displacement data was recorded and converted to the stress-strain plots to analyse the result responses and its implications. Two constitutive hyperelastic models (Yeoh model and Neo-Hookean) were selected for curve fitting and characterizing the non-linear mechanical behavior of the full-scale brain model. Such precisely developed and characterized full-scale brain simulant has not been reported in the literature to date and would be beneficial for simulating a wide range of traumatic brain injuries and surgical training.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 1223-1229"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463831","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}

{"title":"Parametric analysis for nanolubricant in vapor compression refrigeration cycle","authors":"Ammar M. Bahman,&nbsp;Dana Saleh","doi":"10.1016/j.jer.2024.04.011","DOIUrl":"10.1016/j.jer.2024.04.011","url":null,"abstract":"<div><div>With the escalating global energy crisis and the consequential surge in energy consumption, particularly attributed to air conditioning (AC) systems in buildings, there arises a pressing need for sustainable solutions to mitigate this escalating demand. Vapor compression refrigeration (VCR) cycles, ubiquitous across residential, commercial, and industrial sectors, represent a significant portion of global electricity consumption, exceeding 10%. This demand is further exacerbated in regions characterized by hot climates. Consequently, there is a critical imperative to address the environmental impact of these systems, particularly in terms of reducing their Global Warming Potential (GWP). In response to this imperative, this study aims to develop a comprehensive numerical model for VCR systems, focusing on the implementation of nanolubricants. The primary objective is to assess the impact of integrating Al₂O₃ nanoparticles into the lubricating oil (referred to as nanolubricant) on the performance of the VCR cycle. The scope of the study encompasses the investigation of nanolubricants within refrigeration systems, aiming to enhance their efficiency and environmental sustainability. Utilizing the Engineering Equation Solver (EES), a numerical model of a VCR cycle utilizing R-410A refrigerant is developed. The model specifically emphasizes the compressor component, which is flooded with a polyolester (POE) oil base. The study explores various parameters, including ambient conditions, refrigerant-to-oil dissolving ratio, and mass concentration of nanoparticles, to evaluate their influence on system performance. The results indicate a significant enhancement in performance when flooding the base oil before introducing Al₂O₃ nanoparticles, with further improvements observed upon nanoparticle integration. Specifically, the coefficient of performance (COP) of the VCR system exhibits a notable increase compared to the base case configuration. Additionally, the adoption of eco-friendly refrigerants, such as R-32, demonstrates promising COP values following nanoparticle implementation by up to 4%. Moreover, the study reveals a reduction in compressor discharge temperature by up to 20% with higher oil mass concentrations during nanolubricant implementation, indicating enhanced durability and longevity of the VCR system’s compressor. These findings underscore the potential of nanolubricants to contribute to both the efficiency and environmental sustainability of refrigeration systems. In conclusion, the findings of this study offer valuable insights into the utilization of nanolubricants in VCR cycles, highlighting their potential to enhance system performance and mitigate environmental impact. These advancements hold promise for the development of more sustainable refrigeration technologies in the face of mounting energy challenges.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 1215-1222"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140781494","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}

{"title":"An integrated SWARA-QFD under Fermatean fuzzy set approach to assess proactive risk mitigation strategies in recycling supply chain: Case study of plastic recycling industry","authors":"Detcharat Sumrit,&nbsp;Jirawat Keeratibhubordee","doi":"10.1016/j.jer.2023.11.007","DOIUrl":"10.1016/j.jer.2023.11.007","url":null,"abstract":"<div><div>The role of the recycling supply chain in managing plastic waste problems has been emphasized by both academics and practitioners. Plastic recycling producers face various risks associated with supply chain processes that require proper management and proactive strategies to mitigate negative impacts on business performance. However, quantitative research on risk factors and corresponding proactive risk mitigation strategies in recycling supply chain has been limited. This study proposes a novel integrated approach using Stepwise Weight Assessment Ratio Analysis (SWARA) and Quality Function Deployment (QFD) under the Fermatean fuzzy set framework to fill this research gap. The study identifies eleven risk factors of recycling supply chain and eight corresponding proactive risk mitigation strategies through literature review and expert validation. The SWARA technique is employed to compute the relative importance weights of risk factors, and QFD is used to analyze the relationship between risk factors and corresponding proactive risk mitigation strategies. The proposed framework is applied to a recycling plastic packaging waste manufacturer in Thailand as a case study. The results demonstrate that the proposed framework can assist logistics and supply chain managers in the recycling plastic industry in making rational decisions to implement proactive risk mitigation strategies. Moreover, the framework can be applied to other waste recycling industries in a similar way.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 492-510"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139291952","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}

{"title":"Investigation the influence of the number and configuration of fins on the hydrothermal behavior of a double-pipe heat exchanger","authors":"Haya Hussein,&nbsp;Basim Freegah,&nbsp;Qasim Saleh","doi":"10.1016/j.jer.2023.11.006","DOIUrl":"10.1016/j.jer.2023.11.006","url":null,"abstract":"<div><div>The current study targets improving the overall performance of a Double Pipe Heat Exchanger (DPHE), along with developing a correlation equation to predict the Nusselt number and friction factor. The effect of both the number and configuration of fins has been studied numerically in detail using ANSYS Fluent 2022 R1 software. The numbers of fins considered under study were 4, 6, 8, and 10, while the fin configurations were longitudinal and wavy. To verify the numerical results, a comparison of computational and experimental results was done for the traditional model; this comparison showed excellent agreement between them. Furthermore, the outcomes have shown that the overall performance of a DPHE is influenced by the number and configuration of fins. The results show that the optimum model among all models under study is a wavy fin configuration with 8 fins with an overall response of 1.33 as compared to the traditional model. In addition, four equations were developed using the numerical findings and analysis of multiple regression to predict the Nu number and friction factor as functions of the Reynolds Number (Re), Prandtl Number (Pr), number of fins (No. fin), length of pitch (<span><math><msub><mrow><mi>L</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span>) and inner pipe length (<span><math><msub><mrow><mi>L</mi></mrow><mrow><mi>an</mi></mrow></msub></math></span>). The accuracy of the Nu number and friction factor equations for the longitudinal fins is 98.96 % and 96.17 %, respectively, while that for the wavy fins is 99.18 % and 97.96 %, respectively. As a result, this study can accurately depict the overall response of a DPHE.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 1278-1293"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135615858","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}

{"title":"An application of the preference selection index decision making method for parameters selection of FDM printing process","authors":"Alaa Towaiq,&nbsp;Sinan Obaidat,&nbsp;Ahmad Mumani,&nbsp;Aiman Ziout","doi":"10.1016/j.jer.2023.11.010","DOIUrl":"10.1016/j.jer.2023.11.010","url":null,"abstract":"<div><div>3D printing is an innovative technology used for producing functional prototypes and visualizing complex physical designs. Different 3D printing methods have been developed to cope with wide variety of mechanical components and materials. These techniques also speed up the mass manufacturing of complex components by quickly producing working prototypes. The performance of the 3D printing process can be assessed by the achieved outputs such as the mechanical qualities of the produced porotype, printing mass, and printing duration. Like any manufacturing process, how a process performs basically depends on the preference of the decision maker; whether all outputs are important or only a set of these outputs. Determining the desired performance is attained by the proper adjustment of process parameters. Selecting the optimal set of printing parameters, canE therefore, be thought of as multi-criteria decision-making (MCDM) problem since conflicting performance metrics are involved in the decision process. Substantial work has been made primarily on choosing printing machines and studying the effects of printing parameters, but with little focus on deciding parameters settings suitable for achieving the desired printing performance. For this purpose, a preference selection index (PSI)-MCDM model is proposed in this paper. The model is demonstrated using a ZORTRAX- M300 plus plastic 3D-printer as a case study. Multiple scenarios with different sets of decision criteria are presented to reflect users’ predilections. The outcomes show the model's capability to rank parameter combinations in a methodical manner.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 2","pages":"Pages 636-642"},"PeriodicalIF":0.9,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139300242","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}