Engineering Research Journal最新文献

{"title":"Analysis of unsteady MHD Copper-Water nanofluid flow and heat transfer between two parallel surfaces under suction and injection","authors":"W. Abbas, Michael Haleam, Ahmed M. Megahed, R. Awadalla","doi":"10.21608/erj.2024.358327","DOIUrl":"https://doi.org/10.21608/erj.2024.358327","url":null,"abstract":"Unsteady Magnetohydrodynamic (MHD) flow of nanofluid between two infinite parallel porous plates was investigated with considering Heat transfer and Hall Effect under constant pressure gradient. In this study, Copper as nanoparticle with water as its base fluid has been considered. The governing partial differential equations subjected to appropriate boundary conditions were derived and solved semi-analytically with homotopy perturbation method (HPM). The effects of physical parameters are graphically presented for varies values such as, the nanofluid volume fraction, Hartmann number and Reynolds number on non-dimensional velocity and temperature profile are considered. The results show that, increase in nanoparticle volume fraction increase the amount of heat transfer to the nanofluid and hence its temperature increases.","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141398395","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}

{"title":"Impact of commercial activities transformations on heritage areas; Case study: Heliopolis أثر تحولات الأنشطة التجارية على المناطق التراثية دراسة حالة: منطقة مصر الجديدة","authors":"Mariam Mohamed Mostafa Ragab, Haby Hosney Mostafa, Osama Abdelhady Abo Elyazed","doi":"10.21608/erj.2024.358681","DOIUrl":"https://doi.org/10.21608/erj.2024.358681","url":null,"abstract":"Commercial streets in heritage areas are very important elements that affect those area, as these streets contain important commercial activities with tangible heritage values represented by their distinct and diverse architectural and urban elements; and non-tangible heritage values represented by economic, social and cultural values. Therefore, these commercial streets containing those large group of values, must be preserved. The research problem arises from the fact there has been transformations occurring in the commercial activities occupying those commercial streets. Those transformation could be presented through the emergence of some new activities with that aren’t matching to the heritage areas, the disappearance of other activities and the change in existing ones. This can affect the heritage values of those areas. Therefore, this paper aims to study the heritage areas, the types of their commercial streets, and the types of commercial activities occupying them, especially within Heliopolis area. After analyzing the case study, a group of transformations that occurred in commercial activities, could be observed. By studying the transformations, and their causes, the impact of transformation on the heritage areas could be deduced.","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"28 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141402851","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}

{"title":"Simulation of biogas synthesized via co-digestion processes","authors":"Mohamed Hosny Mohamed Abbasy, Khairy Megalaa, Osayed Sayed Mohamed Abu-Elyazeed","doi":"10.21608/erj.2024.358474","DOIUrl":"https://doi.org/10.21608/erj.2024.358474","url":null,"abstract":"The AM2 model was able to accurately predict gas production in anaerobic digestion, with methane production increasing from 0.015 to 0.018 /day as organic loading rates (OLRs) increased. However, the model faced limitations in predicting volatile fatty acid (VFA) dynamics, especially at high OLRs, due to the presence of excess organic matter.In a 37-day experiment of maize silage digestion in a 50-liter anaerobic reactor, it was shown that the AM2 model accurately estimates biogas production, with feeding intervals of fifteen minutes and a pause during weekends.The extended AM2 model was calibrated to ADM1 for grass silage simulation in 2015b. The ADM1 simulation was unsteady initially, with inconsistent biogas flow and alkalinity output profiles, which were stabilized by increasing the disintegration process parameter, , to 0.266 based on a literature review. The profiles demonstrated stability, and an identical initial parameter was suggested for .The organic loading rate (OLR) and hydraulic retention time (HRT) were set at 3.58 kg ODM and 33.09 days, respectively. The extended AM2 model successfully simulated biogas and methane flow rate profiles, indicating better performance than ADM1 for grass silage digestion simulation.Cattle manure digestion is simulated using an extended AM2 model calibrated to ADM1, based on literature parameters. Manure composition analysis determines the influent composition of organic fractions. Manure is valuable for agriculture, enhancing soil structure and nutrient availability, with some nutrients persisting despite cow digestion. Anaerobic digestion of manure can be affected by ammonia concentrations, with equilibrium digestion achievable by maintaining elevated rates, as detailed in the literature.In AM2's extended version, a sensitivity analysis of 24 parameters found","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"12 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141415303","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}

{"title":"STRENGTHENING OF REINFORCED CONCRETE BEAMS SUBJECTED TO TORSION AND SHEAR STRESSES USING FIBRE-REINFORCED-POLYMERS (FRP)","authors":"Mohamed Gaber, Nasr Z. Hassan, A. Abouzied, Hala Mamdouh","doi":"10.21608/erj.2024.359061","DOIUrl":"https://doi.org/10.21608/erj.2024.359061","url":null,"abstract":": An experimental investigation is conducted on the improvement of the torsional resistance of reinforced concrete beams using fiber-reinforced polymer (FRP) fabric. The experimental program outlines a comprehensive analysis of the combined effects of shear and torsion on the torsional strengthening of four rectangular reinforced concrete beams with externally bonded glass fiber-reinforced polymer (GFRP) sheets. Three specimens are strengthened with GFRP composite wraps, and one is kept as a control specimen without strengthening. The outcomes of the one non-strengthened specimen are compared to those of the strengthened specimens. The load, twist angle of the beam, and strains were recorded. Improving the torsional resistance of reinforced concrete beams using FRP was demonstrated to be viable .","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"77 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141402692","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}

{"title":"Effect of Operating Parameters on the Performance of Axially Rotating Horizontal Heat Pipe: Experimental Investigation","authors":"M. A. Yassin, H. M. Abd El-Hameed, M. H. Shedid, H. Abou-Ziyan","doi":"10.21608/erj.2024.358706","DOIUrl":"https://doi.org/10.21608/erj.2024.358706","url":null,"abstract":"This experimental study investigates the thermal performance of axially rotating horizontal wickless heat pipes under different operating conditions. A heat pipe is designed, constructed, and tested for the investigation. The experiments are conducted on a heat pipe rotating at speeds of 250-1500rpm , with Taylor numbers ranging from 3.0×10 7 to 1.1×10 9 , and heat fluxes from 2090 to 16700W/m 2 . The heat pipe is charged with water as a working fluid, filling 100% of the evaporator volume. The effect of liquid charging is also examined, varying between 5 and 55% of the heat pipe’s inner volume. The results demonstrate that rotation significantly enhances the heat pipe’s performance. The effective thermal conductivity of heat pipes increases by 30-40% for heat flux ranging from 2090 to 8350 W/m 2 , and approximately 20% for higher heat fluxes as the Taylor number increases from 3.0×10 7 to 1.1×10 9 . The best performance of the rotating heat pipe is achieved at the highest Taylor number of 1.1x10 9 and the lowest heat flux of 2090 W/m 2 , resulting in a remarkable 9.47-fold increase in effective thermal conductivity compared to copper. The study also identifies the optimum liquid charge for the heat pipe, which is found to be about 35% of the inner pipe volume.","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"1 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141398736","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}

{"title":"Adoption of Lean Approach to Enhance Performance of Fast-Track Construction Projects","authors":"Amr Elmalky, S. Dokhan, Karim El-Dash","doi":"10.21608/erj.2024.358308","DOIUrl":"https://doi.org/10.21608/erj.2024.358308","url":null,"abstract":": The construction industry in Egypt plays a pivotal role in the country's economy, however, inefficient project management practices have been identified as a significant challenge, impacting both the environment and the economy. Evidence showed that the integration of lean construction (LC) concepts and tools into construction management not only addresses challenges but also generates a synergistic impact on project performance. The study investigates the level of awareness, adoption, perceived benefits, and challenges of lean construction in Egypt. A questionnaire survey was used and was collected from 133 respondents from different levels among construction specialists. Additionally, the research explores the feasibility of a tailored framework for the adoption of lean principles, specifically targeting fast-track projects. The findings of this research contribute significantly to bridging the knowledge gap in the application and understanding of lean construction principles in the Egyptian construction industry. The study reveals a diverse landscape of awareness among respondents, emphasizing the importance of increasing knowledge levels for effective implementation. Participants with higher awareness demonstrated substantially higher adoption rates of lean methods, highlighting the interconnected relationship between awareness, adoption, and positive outcomes. This underscores the need for targeted educational programs and training initiatives to enhance professionals' knowledge and skills in effectively implementing lean principles in fast-track projects, especially in the face of current economic challenges. The proposed conceptual framework integrates insights from the literature review and questionnaire analysis, offering practical guidance for implementing lean construction principles. This will enhance the productivity of construction projects with best quality, limited waste, and on-time delivery. In conclusion, this research contributes to advancing knowledge and understanding of lean construction principles in the context of the construction industry in Egypt, providing a foundation for further research and practical strategies. It contributes to lean practices' effective adoption, promoting the industry's advancement and sustainability. Applying LC methods will enhance the implementation of fast-track projects with high quality, less cost and time. Future research considerations include contextual","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"13 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141409226","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}

{"title":"Dynamic Analysis of All-Terrain Vehicle Structure","authors":"Poula Kamel, George A. Fayek, Ahmed A. A. Saad","doi":"10.21608/erj.2024.358540","DOIUrl":"https://doi.org/10.21608/erj.2024.358540","url":null,"abstract":"A safety analysis of an all-terrain vehicle space frame used explicit dynamics in this research. The main design objective of such a frame is driver safety while enhancing structure rigidity. Explicit dynamics analysis provides the designer with the effects of the impact on the structure frame members regarding energy, dynamic stress, and acceleration. The tubular frame 3D model is introduced in SolidWorks considering the powertrain system and driver weights. Then, the frame is subjected to a frontal crash scenario to a fixed full-width rigid barrier in the ANSYS workbench. The explicit dynamics model improves the accuracy and computational efficiency of the analysis, however, a validation was used the lumped mass-spring (LMS) system is executed in MATLAB/SIMULINK environment as an alternative computation technique to ensure FEA simulation results. A 3 DOF dynamic model is utilized to investigate the system's equations of motion in the forward direction. Three main zones are considered including the front bulkhead, roll-cage, and rear engine compartment to represent the mass model accelerations. The deflection values of the vehicle frame according to the frontal crash loading condition are studied, however, the frame members' stiffness was measured experimentally. Finally, the two analysis methods were compared for vehicle frame safety evaluation. The results of the explicit dynamics simulation along with the calculated lumped-mass spring system results indicate that the designed space frame achieves the requirements of structure rigidity regarding the frontal crash scenario condition, and the results of the two models satisfy the model rigidity in terms of deflection, energy absorption and vehicle acceleration.","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"38 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141402330","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}

{"title":"دور الأفنية الداخلية المركزية في تعزيز جـــــــــــودة البيئة الـــــــداخلية في المباني التجارية The Role of Central Atrium in Strengthen the Quality of the Indoor Environment in Commercial Buildings","authors":"طاهر محمود عمر, سحر مرسي محمد, محمد سيف النصر احمد","doi":"10.21608/erj.2024.358692","DOIUrl":"https://doi.org/10.21608/erj.2024.358692","url":null,"abstract":"","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"19 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141390454","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}

{"title":"منهجية بناء الرسومات التنفيذية من خلال تضمين نمذجة معلومات البناء في المقررات المعمارية رؤية نحو مستقبل مهني متميز Methodology for Generating Working Drawings through Integrating BIM in Architectural Courses: A Vision Towards an Outstanding Professional Future","authors":"أحمد صالح عبد الفتاح علي","doi":"10.21608/erj.2024.358305","DOIUrl":"https://doi.org/10.21608/erj.2024.358305","url":null,"abstract":"","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"20 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141411394","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}

{"title":"The Impact of Parametric Thought on Changing Urban Formulations. (Towards creating an integrated parametric urban framework).","authors":"Rania Hisham Ahmed Mohamed Ayad., Mahmoud Taha Mahmoud Selim., Marwa Kamal Fahmy","doi":"10.21608/erj.2024.358501","DOIUrl":"https://doi.org/10.21608/erj.2024.358501","url":null,"abstract":". Undoubtedly, the evolution and innovation in architecture and urban design are closely tied to the advancement and growth of technology. In this context, it is evident that the incorporation of contemporary parametric technological design tools in urban design has led to a transformation in the traditional urban formulations and patterns of city blocks, standards, and morphology. This paper focuses on the concept of Parametric Urbanism, delving into the exploration and questioning of the various types of urban formulations and the impact of parametric thought on changing these formulations. It also examines how this approach can influence traditional urban patterns and contribute to the emergence of new architectural methodologies. Additionally, the paper addresses the factors that have contributed to the rise of parametric urbanism and seeks to determine the benefits and potential drawbacks of","PeriodicalId":505017,"journal":{"name":"Engineering Research Journal","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141402771","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}