Journal of Advanced College of Engineering and Management最新文献_第3页

Computational and Experimental Analysis of Conical Draft Tube's Effect on Conical Basin of Gravitational Water Vortex Turbine 重力水轮机锥形导流管对锥形盆影响的计算与实验分析

Journal of Advanced College of Engineering and Management Pub Date : 2023-06-23 DOI: 10.3126/jacem.v8i2.55944

Bishal Acharya, R. Chaulagain

{"title":"Computational and Experimental Analysis of Conical Draft Tube's Effect on Conical Basin of Gravitational Water Vortex Turbine","authors":"Bishal Acharya, R. Chaulagain","doi":"10.3126/jacem.v8i2.55944","DOIUrl":"https://doi.org/10.3126/jacem.v8i2.55944","url":null,"abstract":"This paper presents an insight into the performance of the Gravitational Water Vortex Turbine (GWVT), a type of Ultra-Low Head (ULH) turbine, with and without the implementation of draft tube. Till date, no attention has been given on the effect of draft tube on GWVT. A model of GWVT along with a conical basin is developed on CATIA v5, and then subjected to a series of computational studies on ANSYS 2020R2. A similar setup is constructed in which a straight divergent draft tube is installed at the exit of the conical basin. The numerical approach suggested that maximum efficiency of the setup in the former case was 72.0% at 53 RPM whereas the efficiency in the latter case was 79.0% at 65 RPM. The increase in the efficiency was calculated to be 9.72%. This conclusion was validated through experimental verification conducted at Himalaya College of Engineering, Chyasal on a pre-fabricated test-rig of capacity 480 L, where the maximum efficiency of 69.4% and 64.5% were obtained with and without the installation of the draft tube respectively. Consequently, an increase of 7.59% in the efficiency of GWVT as an effect of draft tube was observed experimentally. It can be concluded that draft tube plays a vital role in the efficiency of the Gravitational Water Vortex Turbine.","PeriodicalId":306432,"journal":{"name":"Journal of Advanced College of Engineering and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124995426","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 Demand of RC Building as per Soil Type 按土型划分的钢筋混凝土建筑设计要求

Journal of Advanced College of Engineering and Management Pub Date : 2023-06-23 DOI: 10.3126/jacem.v8i1.55919

Suspana Rimal, Bibek Pokhrel, Sunil Shrestha, B. Pradhan

{"title":"Design Demand of RC Building as per Soil Type","authors":"Suspana Rimal, Bibek Pokhrel, Sunil Shrestha, B. Pradhan","doi":"10.3126/jacem.v8i1.55919","DOIUrl":"https://doi.org/10.3126/jacem.v8i1.55919","url":null,"abstract":"The RC-framed building is one of the most common construction techniques for seismic-resistant structures due to its ductile nature. But the seismic performance of the RC structure is affected by various factors among which site soil condition is vital. The sub-soil condition affects the time period of the structure which eventually impacts the earthquake force in the structure, thus making variations in seismic loadings. Although several studies have been performed and design elastic spectra have been defined as per soil types in the design codes, there are no studies quantifying the effect of design demand in the buildings due to variation of soil type in the context of Nepal and NBC 105:2020. Therefore, this study aims to present the variation in design demand for moderately high-rise RC buildings in different soil types. A representative sample building has been taken and analyzed in the Finite Element platform SAP 2000. Numerical analysis is performed using linear static and response spectrum methods. Based on the study, variation in the base shear, story displacement, inter-story drift, and section size to meet the limit state of strength are compared for soil types A, B, C, and D.","PeriodicalId":306432,"journal":{"name":"Journal of Advanced College of Engineering and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116544598","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

Algorithms Comparison in Drowsiness Detection 睡意检测中的算法比较

Journal of Advanced College of Engineering and Management Pub Date : 2023-06-23 DOI: 10.3126/jacem.v8i2.55946

Prasanna Ghimire, Rahul Khanal, Pawan Pandey, Sameep Dhakal, Laxmi Pd Bhatta

{"title":"Algorithms Comparison in Drowsiness Detection","authors":"Prasanna Ghimire, Rahul Khanal, Pawan Pandey, Sameep Dhakal, Laxmi Pd Bhatta","doi":"10.3126/jacem.v8i2.55946","DOIUrl":"https://doi.org/10.3126/jacem.v8i2.55946","url":null,"abstract":"Drowsy driving is a recognized leading cause of road accidents, resulting in a considerable number of fatalities and injuries. This paper presents a proposed system that leverages machine learning algorithms, specifically Convolutional Neural Network (CNN) and Support Vector Machine (SVM), to accurately detect the drowsy state of drivers by analyzing the diameter of their eyes and comparing the level of dilation or constriction. Drowsy driving poses a significant problem on roadways, as indicated by the National Highway Traffic Safety Administration's data, which reports approximately 100,000 police-reported collisions each year involving drowsy driving, leading to over 1,550 fatalities and 71,000 injuries. The proposed system demonstrates the potential to reduce accidents associated with drowsy driving. We conducted an evaluation and comparison of the effectiveness of CNN and SVM algorithms with the objective of identifying the optimal algorithm for drowsiness detection. Our algorithms were trained on a comprehensive dataset comprising images of drowsy and alert drivers, enabling real-time and accurate identification of the driver's state. Employing advanced image processing techniques, the proposed system analyzes changes in eye diameter associated with drowsiness. Its purpose is to promptly alert drivers, thus mitigating accidents caused by drowsy driving. We anticipate that this system will provide a reliable and cost-effective solution to the problem of drowsy driving, with potential benefits for both drivers and passengers. Further research and development efforts could facilitate its widespread adoption in the automotive industry. This paper underscores the significance of addressing drowsy driving and introduces a promising solution through the application of machine learning algorithms. ","PeriodicalId":306432,"journal":{"name":"Journal of Advanced College of Engineering and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130469106","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

Flood Propogation 洪水传播

Journal of Advanced College of Engineering and Management Pub Date : 2023-06-23 DOI: 10.3126/jacem.v8i2.55948

B. Pandey

引用次数: 0

Computational Study on Structural and Thermal Behavior of Aircraft Disk Brake Rotor for Different Materials 不同材料下飞机盘式制动转子结构与热性能的计算研究

Journal of Advanced College of Engineering and Management Pub Date : 2023-06-23 DOI: 10.3126/jacem.v8i2.55942

S. Joshi, Laxman Poudel, Samiksha Dhakal

{"title":"Computational Study on Structural and Thermal Behavior of Aircraft Disk Brake Rotor for Different Materials","authors":"S. Joshi, Laxman Poudel, Samiksha Dhakal","doi":"10.3126/jacem.v8i2.55942","DOIUrl":"https://doi.org/10.3126/jacem.v8i2.55942","url":null,"abstract":"Brakes are one of the most significant safety systems in an aircraft. The rotor will be exposed to large stresses which result in surface cracking, overheating of brake fluid, seals and other components during the braking process. Thus, one of the main tasks for the design of braking system is to reduce the stress, deformation and surface temperature of the brake rotor. This can be achieved by choosing the right material which will undergo the least thermal stresses. In this research a detailed study of structural and thermal analysis is carried out for disc brake rotor of DHC-6 Twin Otter with different materials. The objective of this research is to provide an efficient material for disc brake rotor which can dissipate heat generated during braking at faster rate and also being structurally safe. The materials chosen for the study are Mild Steel, Grey cast iron, Stainless steel, Cabon-carbon composite and Aluminum silicon carbide MMC. From the structural and thermal analysis it was found that the aluminum silicon carbide MMC disc brake rotor exhibits the superior performance against other materials with a mass of 2.37 Kg, deformation of 0.043617 mm, maximum stress of 167.91 MPa, maximum temperature of 250.85 oC and heat flux of 5.2043 W/mm2. The mass, stress, deformation and temperature developed in the aluminum silicon carbide MMC rotor is less than the original stainless steel rotor by 61.3%, 3.66%, 6.9% and 35.6% respectively. Similarly, the aluminum silicon carbide MMC rotor provides better heat dissipation as compared to original rotor due to an increment in heat flux by 15.26%.","PeriodicalId":306432,"journal":{"name":"Journal of Advanced College of Engineering and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129597991","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

Energy Performance Evaluation of Domestic Airport Departure Hall TIA, Kathmandu 加德满都国内机场出发大厅TIA能源性能评估

Journal of Advanced College of Engineering and Management Pub Date : 2023-06-23 DOI: 10.3126/jacem.v8i1.55920

Ritu Shrestha, S. Maharjan

引用次数: 0

Finite Element Analysis of Flexural Strengthening of Reinforced Concrete Beams Using Near-Surface Mounted CFRP Rebars 近表面安装CFRP筋对钢筋混凝土梁抗弯加固的有限元分析

Journal of Advanced College of Engineering and Management Pub Date : 2023-06-23 DOI: 10.3126/jacem.v8i1.55912

Aaditya Agrahari, Jayaprakash J

{"title":"Finite Element Analysis of Flexural Strengthening of Reinforced Concrete Beams Using Near-Surface Mounted CFRP Rebars","authors":"Aaditya Agrahari, Jayaprakash J","doi":"10.3126/jacem.v8i1.55912","DOIUrl":"https://doi.org/10.3126/jacem.v8i1.55912","url":null,"abstract":"Most of the standing structures today have already deteriorated or are on the verge of deterioration due to an increase in their age and harsh environmental conditions. For this very reason, the structures are in need of being upgraded or replaced. Retrofitting using near-surface mounted (NSM) fiber-reinforced polymer (FRP) rods has now emerged as a promising technique for strengthening the reinforced concrete members by increasing their flexural strength. This study aims to numerically investigate the efficiency of the NSM technique for flexural strengthening of RC beams by using finite element (FE) software, ABAQUS, and also evaluate the impact of variables such as concrete strength, embedded length of FRP rods, filler material used for the FRP rods, and the number of FRP rods provided. Validation of the finite element model was confirmed by first making a comparison with the experimental study presented in the literature for an un-strengthened beam. Thereafter, the validated model was used to simulate reinforced concrete beams strengthened with the NSM technique. The numerical results of the cracking moment, steel yielding moment, ultimate bending moment, and deflection at failure were reported and the impact of the variables was evaluated. The FE analysis results indicated that for the RC beams strengthened with NSM FRP rods, the flexural capacity significantly increased compared to the control beam, while the mid-span deflections of strengthened beams at failure decreased compared to the control beam.","PeriodicalId":306432,"journal":{"name":"Journal of Advanced College of Engineering and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132705043","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

Development of a Model Updating Technique Using Soft Computing 基于软计算的模型更新技术的发展

Journal of Advanced College of Engineering and Management Pub Date : 2022-08-25 DOI: 10.3126/jacem.v7i01.47344

Yogesh Yadav, Ishwor Singh Saud

引用次数: 0

Solution of the Black-Scholes Equation by Finite Difference Schemes 用有限差分格式求解Black-Scholes方程

Journal of Advanced College of Engineering and Management Pub Date : 2022-08-25 DOI: 10.3126/jacem.v7i01.47330

Ganga Ram D C, K. N. Uprety, H. Khanal

引用次数: 0

Experimental Analysis on Properties of M15 and M20 Concrete Brick Sample with Partial Replacement of Sand by Crumb Rubber and Coarse Aggregate by Expanded Polystyrene 橡胶屑部分替代砂石和膨胀聚苯乙烯粗集料对M15和M20混凝土砖试样性能的试验分析

Journal of Advanced College of Engineering and Management Pub Date : 2022-08-25 DOI: 10.3126/jacem.v7i01.47340

Samiksha Dhakal, R. Shrestha, S. Joshi

{"title":"Experimental Analysis on Properties of M15 and M20 Concrete Brick Sample with Partial Replacement of Sand by Crumb Rubber and Coarse Aggregate by Expanded Polystyrene","authors":"Samiksha Dhakal, R. Shrestha, S. Joshi","doi":"10.3126/jacem.v7i01.47340","DOIUrl":"https://doi.org/10.3126/jacem.v7i01.47340","url":null,"abstract":"The suitability of crumb rubber and EPS (expanded polystyrene) as an alternative to sand and coarse aggregate in concrete production was researched here. Sand and coarse aggregate were partially replaced by crumb rubber and EPS in different percentages like 0%, 10%, 20% and 30% for Grade M20 and M15 concrete samples. The sample of size (240 × 115× 57) mm for M15 and M20 grade of concrete were prepared for the test. Various properties like Compressive strength, Bulk density and water absorption of the concrete brick prepared were determined. The normal consistency, initial and final setting time and compressive strength of cement used for the experiment were determined as 27%, 120 minutes, 290 minutes and 40.34 N/mm2 respectively before carrying out the experiment. The nominal maximum size of sand, coarse aggregate, crumb rubber and EPS used for the preparation of concrete brick sample were found as 2.36 mm, 12.5mm, 2.36 mm and 4.75 mm respectively from the sieve analysis. Impact value of coarse aggregate obtained was 17.06 %. \u0000The experimental results showed that water absorption of prepared M15 and M20 concrete brick samples increased whereas compressive strength and bulk density decreased with increase in percentage replacement of sand by crumb rubber and coarse aggregate by EPS. The results obtained from the experiment showed that concrete brick made with partial replacement of sand and coarse aggregate y crumb rubber and EPS respectively had sufficient compressive strength compared to common brick.","PeriodicalId":306432,"journal":{"name":"Journal of Advanced College of Engineering and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127336369","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