Diyala Journal of Engineering Sciences最新文献_第3页

Building Information Modelling (BIM) Applications in the Construction Sector to Improve Project Planning Facilities 建筑资讯模型(BIM)在建造业的应用，以改善项目规划设施

Diyala Journal of Engineering Sciences Pub Date : 2023-09-03 DOI: 10.24237/djes.2023.16310

Mustafa R. Yahya, Wadhah A. Hatem

{"title":"Building Information Modelling (BIM) Applications in the Construction Sector to Improve Project Planning Facilities","authors":"Mustafa R. Yahya, Wadhah A. Hatem","doi":"10.24237/djes.2023.16310","DOIUrl":"https://doi.org/10.24237/djes.2023.16310","url":null,"abstract":"Project systems are essential to the success of a construction project since they provide models and techniques recommended for construction planning. Performance is the most important part of the planning process. Despite the fact that the construction industry has traditionally been afflicted by insufficient planning and overdependence on tradition integrated planning, building information modelling (BIM) technology has frequently in recent years been proposed to increase the effectiveness of project performance in construction planning facilities. The practical goal of this research is to apply of BIM to enhance the effectiveness and efficiency of structural planning. A quantitative questionnaire was used to summarise the benefits and capabilities of these technological advances in the field of construction planning. As a result, the questionnaire was constructed based on prior research that dealt with positive benefits, and topics were generated in the research areas of cost, time, communications, conflicts, documentation, and other key indicators in the design phase and feasibility studies. The results were calculated from the relative means of the questionnaire filled for this purpose, and the average rate was 0.816 percent, reflecting the importance of this technique. Hence, the relative importance of structural planning will be relatively high due to its effectiveness in the built environment.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121876373","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

Efficient Routing in VANETs Using MRRP Algorithm 基于MRRP算法的vanet高效路由

Diyala Journal of Engineering Sciences Pub Date : 2023-09-03 DOI: 10.24237/djes.2023.16311

LaythKamil Almajmaie, W. A. Mahmood, A. Raheem, Saad Albawi, Oguz Bayat

{"title":"Efficient Routing in VANETs Using MRRP Algorithm","authors":"LaythKamil Almajmaie, W. A. Mahmood, A. Raheem, Saad Albawi, Oguz Bayat","doi":"10.24237/djes.2023.16311","DOIUrl":"https://doi.org/10.24237/djes.2023.16311","url":null,"abstract":"Designing a reliable routing protocol for Vehicular Ad hoc Network (VANET) poses considerable challenges due to certain unique challenges inherently present in Vehicular Ad hoc Network (VANET) topology. Some of them are needed for vehicles acting as nodes having to abide by traffic rules, uncertain inter-vehicular speed variations that may affect link stability etc. Designing a routing protocol capable of dealing with multiple limiting conditions such as long congestion periods, link failures and handoffs is a challenging task, where most of the existing multipath routing protocol shows poor performance. In this paper, the proposed Multipath Route Restoration Protocol (MRRP)is aimed at providing a robust communication channel in case of link failure between nodes. This is realized by focusing on better route maintenance for the protocol. In a wireless network, a routing protocol determines the particular ways in which routers connect. In a wireless network, as the number of hops in a wireless communication path increases, various signal factors such as interference and path loss degrade the network performance. however, sending data over a longer distance will reduce throughput. Furthermore, link stability is substantially impacted by the unpredictable movement of vehicles. Multipath routing is regarded as a potential solution to improve packet delivery and end-to-end delay in VANETs.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127259488","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 Simulation of Three Phase Induction Machines Based on Reduced Order Model for Power Systems Analysis 电力系统分析中基于降阶模型的三相感应电机动态仿真

Diyala Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.24237/djes.2023.16212

A. S. Jafar, Ghassan Abdullah Salman, A. I. Ismael

{"title":"Dynamic Simulation of Three Phase Induction Machines Based on Reduced Order Model for Power Systems Analysis","authors":"A. S. Jafar, Ghassan Abdullah Salman, A. I. Ismael","doi":"10.24237/djes.2023.16212","DOIUrl":"https://doi.org/10.24237/djes.2023.16212","url":null,"abstract":"Induction machines are a crucial type of electrical equipment utilized as motors in various industries and single-phase forms in household applications. They make up more than 80% of the industrial motors used today. This paper presents a dynamic simulation of three-phase induction machines based on the (d-q) model, providing a clear and easy-to-understand explanation of the behavior of the induction motor in the synchronous reference frame. The simulation is implemented using SIMULINK/MATLAB software, and full-order model analysis is conducted for transient analysis. However, modeling induction machines as part of power system analysis can be done with a less detailed model than the full-order one. In this paper, a reduced-order model is employed to simulate the induction motor using MATLAB/SIMULINK. The results of the reduced-order system and the full-order framework are compared to investigate the model's limits, and the computational benefits of saving time during large power system simulations justify the relative decrease in accuracy. The use of a reduced-order model results in a significant reduction in computation time when simulating large and very large-scale power systems, with a much higher accuracy in transient analysis than the conventional steady-state model.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"84 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114096343","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

Kinetic Study of Ethanol Dehydration to Ethylene and Diethyl Ether in Catalytic Packed Bed Reactor Over ZSM-5 Catalyst ZSM-5催化剂催化填料床反应器中乙醇脱水制乙烯和乙醚的动力学研究

Diyala Journal of Engineering Sciences Pub Date : 2023-04-20 DOI: 10.24237/djes.2023.16203

Narin A. Aali, G. Hadi

{"title":"Kinetic Study of Ethanol Dehydration to Ethylene and Diethyl Ether in Catalytic Packed Bed Reactor Over ZSM-5 Catalyst","authors":"Narin A. Aali, G. Hadi","doi":"10.24237/djes.2023.16203","DOIUrl":"https://doi.org/10.24237/djes.2023.16203","url":null,"abstract":"Dehydration of ethanol is one of the crucial processes as it is considered a green route for producing ethylene and diethyl ether and is promoted mainly by economics and environmental appeal. In this study, different kinetic models for ethanol dehydration to ethylene and diethyl ether were developed based on two parallel reactions and different mechanisms. Additionally, a mathematical model of a packed bed reactor was also suggested based on a set of hypotheses for investigating the axial concentration profile of ethanol. Kinetic parameters of each model were estimated by nonlinear regression analysis of obtained experimental data reported in the literature at temperatures between (523.15 – 623.15) K. The analysis showed that the single-site model I for ethylene formation and dual-site (LHHW) model for diethyl ether formation gave the best representation of experimental data compared to other proposed models. Kinetic parameters were found to be in good accordance with the Arrhenius equation with acceptable straight-line plots, and they have been satisfactorily correlated as functions of reaction temperature. The mathematical model presented a smooth linear change in ethanol concentration at various temperatures. The AARD% obtained for each chosen ethylene and diethyl ether formation model were about (1.4502-2.5978) and (0.9135-2.9394), respectively.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115810020","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

Strategic Planning for Infrastructure of Diyala Governorate: Water Sector 迪亚拉省基础设施战略规划:水利部门

Diyala Journal of Engineering Sciences Pub Date : 2023-04-20 DOI: 10.24237/djes.2023.16207

Shireen A. Lateef, Abbas M. Abd

{"title":"Strategic Planning for Infrastructure of Diyala Governorate: Water Sector","authors":"Shireen A. Lateef, Abbas M. Abd","doi":"10.24237/djes.2023.16207","DOIUrl":"https://doi.org/10.24237/djes.2023.16207","url":null,"abstract":"Infrastructure services are closely related to human life and development, as they are an essential indicator of the progress of life in countries. Infrastructure projects including the water sector are indeed the backbone of a country's economic development, providing many social, economic and environmental benefits. This paper aims to study the existing infrastructure (water sector) in Diyala Governorate, analyse the available data, prepare indicators of deficit ratios according to international standards, and propose possible solutions to address the problems in this sector. Data were collected for the water sector, which included the quantities of potable water supplied for the past eleven years. The results showed that the deficit rate in the water sector amounted to 32% in 2021, as evidenced by the deficit rates and the presence of clear deficiencies in the water sector in Diyala Governorate, and this deficiency does not result only from lack of availability, but rather due to a weak planning vision and the absence of future plans that take into account the increase in the governorate population. The results of predicting using simple linear regression using the Spss program version 26 showed that the demand for drinking water will reach 554,354 m³ per day in 2035. Three plans have been proposed to address the current deficit and future demand in the water sector, which is a short-term plan extending from 2022 to 2025, addressing 50% of the current deficit in 2021; A medium-term plan extending from 2022 to 2027 addresses the current deficit once and for all, and a long-term plan extending from 2022 to 2035 addresses the current deficit and future demand in the water sector.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114312373","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

Cumulative Fatigue Life Estimation Under Combined Shot Peening and Elevated Temperature for AA7001-T6 喷丸强化与高温联合作用下AA7001-T6的累积疲劳寿命估算

Diyala Journal of Engineering Sciences Pub Date : 2023-04-19 DOI: 10.24237/djes.2023.16204

H. Mahdi, Saad T. Faris, Raad Mohammed Abed, H. M. Alalkawi

{"title":"Cumulative Fatigue Life Estimation Under Combined Shot Peening and Elevated Temperature for AA7001-T6","authors":"H. Mahdi, Saad T. Faris, Raad Mohammed Abed, H. M. Alalkawi","doi":"10.24237/djes.2023.16204","DOIUrl":"https://doi.org/10.24237/djes.2023.16204","url":null,"abstract":"The fatigue life of aluminum alloys (7001–T6) and shot peening at various temperatures are predicted in this study. Shot peening (SP) steel balls is a surface treatment technique that can help minimize damage. This study set out to conduct an experimental investigation in order to ascertain the amount of damage caused by fatigue buildup for AA7001-T6 under rotating bending loading and a stress ratio R = -1. RT (room temperature), 330 °C, and SP + 330 °C were the temperatures used in the testing. To predict the fatigue life under high temperatures, it was suggested to use a modified damage stress model that had been established to take damage at different load levels into account. To determine the most damage (Miner's rule), the output of the current model was compared to experimental findings and the output from the fatigue damage model. The comparison showed that the current model had a respectable level of safety, whereas the miners' model had two models: one for low-high loading and the other for high-low loading, and the results were suitable for extending fatigue life. Despite the fact that H-L loading has a longer fatigue life (19477) cycles than the experimental (16433 cycles), L-H loading is conservative (Nf is 19477 cycles less than the experimental (24733 cycles) (non-conservative).","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131172288","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

Design and Optimization of a Standing-Wave Thermoacoustic Refrigerator Using DELTAEC 基于DELTAEC的驻波热声制冷机设计与优化

Diyala Journal of Engineering Sciences Pub Date : 2023-04-18 DOI: 10.24237/djes.2023.16211

Mohanad Q. Kamil, Samir Gh. Yahya, Olusegun M. Ilori

{"title":"Design and Optimization of a Standing-Wave Thermoacoustic Refrigerator Using DELTAEC","authors":"Mohanad Q. Kamil, Samir Gh. Yahya, Olusegun M. Ilori","doi":"10.24237/djes.2023.16211","DOIUrl":"https://doi.org/10.24237/djes.2023.16211","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000Thermoacoustic refrigeration is one of the best alternatives to conventional refrigeration systems due to the use of inert gases such as helium or air. On the contrary, conventional refrigeration systems use refrigerants (CFC) that are harmful to the environment and humans due to global warming and ozone layer depletion issues. It is possible to classify thermoacoustic technology as a clean, renewable technology with a bright future due to its many advantages. Thermoacoustic refrigerators' main function is to utilize sound waves to create a cooling effect. In the present study, the focus is on the design of a standing-wave thermoacoustic refrigerator driven by an ordinary loudspeaker using the simulation program DELTAEC. Additionally, investigating the influence of significant stack and resonator parameters (inertance and compliance) on cooling power and performance coefficient (COP). Hence, the designed thermoacoustic refrigerator performed well in respect of cooling power and coefficient of performance. It has achieved a cooling power of 312 W with a temperature difference of 25 K between the ambient and cold heat exchangers at a COP of 1.9275. \u0000 \u0000 \u0000 \u0000","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133940071","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

Effect of Metakaolin on the Swelling and Shrinkage Behaviour of a highly Expansive Soil 偏高岭土对高膨胀土膨胀收缩特性的影响

Diyala Journal of Engineering Sciences Pub Date : 2023-04-18 DOI: 10.24237/djes.2023.16205

Noor Th. Abd, J. M. Abbas

引用次数: 1

Evaluate the State of Building Maintenance Performance in Construction Projects: A Case Study of Iraq, Diyala 评估建筑项目中的建筑维护状况：伊拉克迪亚拉案例研究

Diyala Journal of Engineering Sciences Pub Date : 2023-04-18 DOI: 10.24237/djes.2023.16210

Suror Ramadan, Walid M. Khammas, A. H. Hameed

{"title":"Evaluate the State of Building Maintenance Performance in Construction Projects: A Case Study of Iraq, Diyala","authors":"Suror Ramadan, Walid M. Khammas, A. H. Hameed","doi":"10.24237/djes.2023.16210","DOIUrl":"https://doi.org/10.24237/djes.2023.16210","url":null,"abstract":"Building maintenance is one of the critical issues that maintenance managers should prioritize. As a result, evaluating the performance status of maintenance is required to understand the reality of maintenance in construction projects and to ensure that maintenance meets the required goals and improves building preservation. Therefore, the aim of this study is to evaluate the state of building maintenance performance in construction projects. The field survey included preparing a list of the questionnaire, conducting a statistical analysis of a Sample Questionnaire, and discussing the results. Note that the research has achieved practical results The results showed that the average value for the axis (encouragement/development) reached (2.31), which is the lowest value in the questionnaire, showing that was an absence of professional development and employee training through a training course, as well lack to carry out follow-up work on the status of performance of the functions of the main building elements, in addition to the scarcity of taking into account the design, construction phase and how to perform maintenance, and therefore the failure to apply these factors will harm the process maintenance and efficiency.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132411134","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

Prediction the Experimental Data of CO2 and H2S Solubility in Ionic Liquids Using PR-EoS with Three Different Mixing Rules 用PR-EoS预测三种不同混合规则下离子液体中CO2和H2S溶解度的实验数据

Diyala Journal of Engineering Sciences Pub Date : 2023-04-16 DOI: 10.24237/djes.2023.16209

Shagull M. Ali, A. J. Hadi, Shahla Z. Ahmad

引用次数: 0