i-manager's Journal on Mechanical Engineering最新文献_第8页

FRICTION STIR WELDING OF SIMILAR AZ91 MG ALLOY SHEETS: STUDIES ON MICROSTRUCTURE AND MECHANICAL PROPERTIES 相似az91镁合金板的搅拌摩擦焊接:显微组织和力学性能研究

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.11.3.17983

M. Yugandhar, I. S. R. Vedaraj

引用次数: 0

Analysis of a finned type concentric tube heat exchanger using different materials by applying CFD 采用CFD对不同材料的翅片式同心管换热器进行了分析

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.12.2.18476

Sai Raja Chada Jithendra, N. Ganesh, R. Dharmalingam

{"title":"Analysis of a finned type concentric tube heat exchanger using different materials by applying CFD","authors":"Sai Raja Chada Jithendra, N. Ganesh, R. Dharmalingam","doi":"10.26634/jme.12.2.18476","DOIUrl":"https://doi.org/10.26634/jme.12.2.18476","url":null,"abstract":"Heat exchangers are equipment used to transfer heat from a high temperature fluid to a low temperature fluid without direct contact. Usually, the heat exchangers used for industrial applications are large in size. The objective of this study is to reduce the size of the heat exchanger and increasing the effectiveness by using suitable materials. The present study is carried out on a concentric tube heat exchanger with rectangular fins arranged around the circumference of the tube. The initial simulation is carried out to find the best material among aluminum bronze and Al 6061. The study is further continued to find the best inlet conditions by varying the mass flow rate from 0.25 kg/s to 3 kg/s in 0.25 kg/s increments and inlet temperature from 80°C to 90°C in 5°C increments. Cold water flow conditions, such as mass flow rate of 1.5 kg/s and inlet temperature of 30°C, are constant throughout the study. The heat exchanger was modeled in SOLIDWORKS 2020. The flow simulation and thermal analysis were carried out in SOLIDWORKS Flow Simulation 2020. The simulation results and the actual prototype results showed a variation of 4.2%.","PeriodicalId":191914,"journal":{"name":"i-manager's Journal on Mechanical Engineering","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117291371","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

THERMOECONOMIC ANALYSIS OF A SINGLE EFFECT, MECHANICAL VAPOR COMPRESSION DESALINATION UNIT 单效热经济分析，机械蒸汽压缩脱盐装置

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.9.3.15797

Fellah Giuma

引用次数: 1

Parametric analysis of entropy generation in turbulent convective forced flow in spiral channels at constant wall temperature 等壁温下螺旋通道湍流对流强迫流动熵产的参数分析

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.12.2.18387

Elmajdub Faraj

{"title":"Parametric analysis of entropy generation in turbulent convective forced flow in spiral channels at constant wall temperature","authors":"Elmajdub Faraj","doi":"10.26634/jme.12.2.18387","DOIUrl":"https://doi.org/10.26634/jme.12.2.18387","url":null,"abstract":"This paper discuses parametric analysis of entropy generation in a forced convective turbulent flow of an incompressible fluid at a constant wall temperature through spiral channel of rectangular cross section of flow path has been carried out in terms of mass flow rates, temperature differences between fluid flow and temperature of the wall of the passage surface, width of the spiral passages and the shape geometry, as well as the types of fluids. Air is used as the working fluid, and in addition, water and oil are used in the parametric study. The competition between heat transfer enhancement and entropy generation has been addressed. Comparison between entropy generation profiles for different passage widths and shapes have been reported. It is found that mass flow rate and inlet fluid temperature have a considerable impact on entropy generation and hence on heat transfer enhancement. The findings show that the narrowing passage consumes more pump power to overcome viscous dissipation. Regarding the channel shape, it was found that the rectangular channel has the highest Bejan number (Be), while the circular spiral channel requires more pump power than the others. The data obtained indicate that the selection of the most suitable configuration and the best flow conditions becomes a critical task. Also, secondary flow due to centrifugal force and curvature has a significant effect on increasing heat transfer and entropy generation.","PeriodicalId":191914,"journal":{"name":"i-manager's Journal on Mechanical Engineering","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133276623","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

Study of fluid flow in a 4-Inlet convergent - Divergent nozzle 四入口收敛-发散喷管内流体流动的研究

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.13.3.19996

R. Rajesh

{"title":"Study of fluid flow in a 4-Inlet convergent - Divergent nozzle","authors":"R. Rajesh","doi":"10.26634/jme.13.3.19996","DOIUrl":"https://doi.org/10.26634/jme.13.3.19996","url":null,"abstract":"This study focuses on the investigation of fluid flow in a Convergent-Divergent (C-D) nozzle with four inlets. The nozzle geometry comprised a convergent angle of 45 °and a divergent angle of 15 °. Computational Fluid Dynamics (CFD) simulations were conducted to analyze the behavior of the flow within the C-D nozzle under varying inlet Mach parameters ranging from 2 to 5. The stream characteristics inside the nozzle were analyzed using Computational Fluid Dynamics (CFD) simulations. This study examined crucial parameters such as maximum pressure, minimum pressure, maximum velocity, and outlet Mach number, which are essential for understanding the behavior and performance of the flow. Fluent software, which is a well-established computational fluid dynamics tool, was used to conduct simulations and analyze the flow characteristics. The results obtained shed light on the behavior of the fluid flow and provide valuable insights into the performance of the C-D nozzle at different inlet Mach parameters. This research contributes to a deeper understanding of the C-D nozzle performance and its applications in various engineering fields, such as aerospace and propulsion systems. These findings may have significant implications for optimizing nozzle design and enhancing overall system efficiency.","PeriodicalId":191914,"journal":{"name":"i-manager's Journal on Mechanical Engineering","volume":"84 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116470602","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 and analysis of torsional vibrations in borehole drill strings 井内钻柱扭振建模与分析

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.12.4.18793

C. Joshua

{"title":"Modeling and analysis of torsional vibrations in borehole drill strings","authors":"C. Joshua","doi":"10.26634/jme.12.4.18793","DOIUrl":"https://doi.org/10.26634/jme.12.4.18793","url":null,"abstract":"Bore hole drilling is a growing activity driven by the need to access important resources like ground water and fossil fuels. In the process, however, undesired vibrations and shocks on the drill strings are invariably experienced, and this has a detrimental impact on the equipment. To get a full understanding of the origins and characteristics of this dysfunction, a generalized lumped-parameter model of the drill string system is studied to provide a deeper understanding of the drillstring dynamics and bit mechanics. The torsional stick-slip vibration phenomenon focuses on analyzing the source of vibration excitation, which is primarily the nonlinear bit-rock fictional interaction. The impact of various parameters such as the weight on the bit, rotational speed, and damping on the severity of vibration, in particular stick-slip vibration, is further analyzed. The simulation results highlight the significance of the key factors for stick-slip onset and severity. These controllable factors can be used to eliminate stick-slip while avoiding other undesirable effects, achieving optimum performance. Further research will be done on multi-stability analysis to define the optimum operation zones and design of vibration reduction tools and control strategies.","PeriodicalId":191914,"journal":{"name":"i-manager's Journal on Mechanical Engineering","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122037415","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

AERODYNAMIC STUDY OF SEDAN CAR FOR INCREASING FUEL EFFICIENCY BY VORTEX GENERATORS 利用涡发生器提高轿车燃油效率的气动研究

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.11.4.18095

G. Sivaraj, J. P. Ramesh, G. Lokesh

引用次数: 0

Optimization of pintle injector position to control thrust propulsion 针喷位置优化控制推力推进

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.12.1.18267

Anusuri Phanibhaskar, Yeswanth Akella, Nemani Raghuveer

引用次数: 0

Study on stress-strain effect on gas production from shale formation 应力-应变对页岩产气影响的研究

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.13.2.19038

Krishna Kudapa Vamsi

引用次数: 0

SOME STUDIES OF MECHANICAL AND THERMAL BEHAVIOUR OF CNT BASED E-GLASS FIBRE COMPOSITES 碳纳米管基电子玻璃纤维复合材料的力学和热性能研究

i-manager's Journal on Mechanical Engineering Pub Date : 1900-01-01 DOI: 10.26634/jme.9.4.16441

G. Satish, K. Aditya

引用次数: 2