JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering最新文献_第7页

Role of magnesium and minor zirconium on the wear behavior of 5xxx series aluminum alloys under different environments 镁和少量锆对5xxx系列铝合金在不同环境下磨损行为的影响

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-12-10 DOI: 10.30464/jmee.2020.4.3.209

M. S. Kaiser, M. Matin, K. M. Shorowordi

引用次数: 2

Recent Updates on Energy Planning Models - A Review 能源规划模型的最新进展-综述

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-12-10 DOI: 10.30464/jmee.2020.4.3.249

M. Hafeez, A. B. Gulshan, Fatima Tahira

引用次数: 0

Canvitation deterioration of diesel power plant cylinder liner 柴油机缸套劣化现象

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-12-10 DOI: 10.30464/jmee.2020.4.3.239

S. Bako, A. Nasir, B. Ige, N. Musa

{"title":"Canvitation deterioration of diesel power plant cylinder liner","authors":"S. Bako, A. Nasir, B. Ige, N. Musa","doi":"10.30464/jmee.2020.4.3.239","DOIUrl":"https://doi.org/10.30464/jmee.2020.4.3.239","url":null,"abstract":"The generating station in which diesel engine is used as a prime mover for generating electrical energy is known as diesel power plant. The cylinders liner are cylindrical component that are fixed inside the engine block. The function of the cylinder liners is to retain the working fluid and to guide the piston. Most diesel power plant uses wet-cylinder liners that are exposed to intensive cavitation. The paper aimed at studying the behavior of the cylinder liners that can lead to cavitation. The analysis involves, modeling and simulation in using Solidworks Software. The analysis shows that the cylinders are subjected to harmonic vibration resulting to momentary separation of the coolant from the cylinder wall, creating a pressure difference around the coolant surface which forms air bubbles. These bubbles explode at an extreme velocity. The explosion of these bubbles release surface energy known as cavitation. The energy hammers the cylinder liner surface thereby removing minute particles of metal from the surface of the vibrating cylinder leading to cavitational deterioration. The paper hereby calls on automotive designers to take critical measures in designing of; cylinder liner, water jacket and the entire cooling system, in order to control this phenomenon.","PeriodicalId":32811,"journal":{"name":"JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83240972","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: 2

Thermal - electrical analogy in dynamic simulations of buildings: Comparison of four numerical solution methods 建筑动态模拟中的热电类比:四种数值解法的比较

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-11-24 DOI: 10.30464/jmee.2020.4.2.179

P. Michalak

引用次数: 4

Thermal performance of corrugated plate heat exchanger using ethylene glycol as test fluid 以乙二醇为试验流体的波纹板换热器的热性能

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-11-24 DOI: 10.30464/jmee.2020.4.2.167

Sreedhar Rao Battula, Keerthana Reddy Chittireddy, Meena Pullurwar, Kishore Kumar Sriramoju

{"title":"Thermal performance of corrugated plate heat exchanger using ethylene glycol as test fluid","authors":"Sreedhar Rao Battula, Keerthana Reddy Chittireddy, Meena Pullurwar, Kishore Kumar Sriramoju","doi":"10.30464/jmee.2020.4.2.167","DOIUrl":"https://doi.org/10.30464/jmee.2020.4.2.167","url":null,"abstract":"This paper reports an experimental comparative thermal analysis of a flat plate heat exchanger and corrugated plate heat exchanger (CPHE) of different corrugation angles using ethylene glycol as test fluid. The experiments were carried out counter current mode using water as hot fluid at 75°C. Design of each plate provided with eleven thermocouple sensors to determine the temperatures, in which seven were used to measure the surface temperature of plate and four were used to measure the inlet and outlet bulk temperature of cold and hot fluids. The mass flow rate of test fluid, varied between 0.5 to 4 liters per minute and corresponding steady state temperatures is measured. Using experimental readings, temperature difference between the inlet and outlet streams (DT), logarithmic mean temperature difference (LMTD) and overall heat transfer coefficient (U) are determined. The obtained DT and U values of corrugation angles (300, 500) of CPHE were compared with those of flat plate heat exchangers. For corrugation angle of 30° and 50°, the DT and U values increases with increase of mass flow rate of the fluid.","PeriodicalId":32811,"journal":{"name":"JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82645662","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

A review of the vehicle suspension system 车辆悬挂系统的回顾

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-11-24 DOI: 10.30464/jmee.2020.4.2.109

I. T. Jiregna, G. Sirata

{"title":"A review of the vehicle suspension system","authors":"I. T. Jiregna, G. Sirata","doi":"10.30464/jmee.2020.4.2.109","DOIUrl":"https://doi.org/10.30464/jmee.2020.4.2.109","url":null,"abstract":"The driving comfort of the vehicle is primarily determined by the design of the suspension system, which transmits the force between the vehicle and the ground. There are different types of vehicle suspension systems, including active suspension systems that provide significant benefits for ride comfort while driving. However, the existing active suspension systems have limited functions such as power, and also complex structure. To overcome the problem, the proper design of the active suspension system by considering its present limitations is essential. A well-designed active suspension system controls the load on the wheels under the resonance of the body structure and ensures driving comfort. It reduces the vibrational energy of the vehicle body caused by the excitation of the road while keeping the stability of the vehicle within an acceptable limit. For a proper design of the active suspension system, the road surface, the seat suspension, and the wheel load are the most important elements to consider. In this study, different types of vehicle suspension systems with their limitations have been thoroughly investigated. Many aspects of control and some of the essential practical considerations are also explored.","PeriodicalId":32811,"journal":{"name":"JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90107119","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: 22

Survey on the nucleate pool boiling of hydrogen and its limits 氢的核池沸腾及其极限的研究

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-11-24 DOI: 10.30464/jmee.2020.4.2.157

T. Baki

{"title":"Survey on the nucleate pool boiling of hydrogen and its limits","authors":"T. Baki","doi":"10.30464/jmee.2020.4.2.157","DOIUrl":"https://doi.org/10.30464/jmee.2020.4.2.157","url":null,"abstract":"Nucleate pool boiling is a very efficient transfer regime with low temperature gradients, bounded between two heat flux values and which border transitions to other regimes, this phenomenon is well framed with correlations; our study aims to clarify the applicability of this regime to liquid hydrogen and to develop reliable correlations for a useful and qualitative agreement. An exhaustive review on the nucleate pool boiling of hydrogen and the limits of this regime, whether are the onset nucleate boiling (ONB) and the critical heat flux (CHF) was made, allowing the collection of more than 1400 points from experimental setups, highlighting a variety of parameters. Five predictive correlations were drawn from the literature, graphical and statistical comparisons were made, two in five reveal acceptable results. After analysis of the experimental data, new correlations were developed and compared with the data collected, convincing results were obtained and discussed. A simple form was expressed for the heat flux , shows better predicted values; convincing results of the (CHF) have been found on modified Kutateladze correlation (1948), and the CHF value reaches a maximum of 148×103 W/m² for a reduced pressure at 0.35; a nucleate boiling correlation suitable for hydrogen has been developed.","PeriodicalId":32811,"journal":{"name":"JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering","volume":"378 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86813086","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: 5

A review on the vortex tube geometrical affecting paramters 涡管几何影响参数研究进展

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-08-09 DOI: 10.30464/jmee.2020.4.1.69

M. Abdulhussain

{"title":"A review on the vortex tube geometrical affecting paramters","authors":"M. Abdulhussain","doi":"10.30464/jmee.2020.4.1.69","DOIUrl":"https://doi.org/10.30464/jmee.2020.4.1.69","url":null,"abstract":": One of the increased usability energy separation devices that deals with compressed fluids such as the air, the water, and several Refrigerants are the Ranque-Hilsch vortex tube due to its simple operating principle to separate the compressed fluid to two hot and cold streams. The aim of the current paper is to review the Ranque-Hilsch tube flow separation most affecting geometrical parameters influencing the thermal separation efficiency in the literature that are conducted numerically and experimentally such as the number of injection nozzles and their cross-sectional shape including the rectangular and the trapezoidal for straight constant and converged nozzle profiles as well as the helical swept nozzle configurations like the nozzles aspect and the convergence ratios, the variation of the helical profile pitch angle with the increase in the nozzles number is also considered in the survey, further geometrical parameters survey is performed that includes the vortex tube orifice size to the nozzle’s length dimensional ratio and also the vortex tube configuration like the divergent and the convergent/divergent vortex tube shapes characteristics that includes the divergent angle and the throttling zone size in addition to the vortex tube length to the hot exit port size ratio and the optimum conical valve shape position and tapering angle.","PeriodicalId":32811,"journal":{"name":"JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79317600","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

Ballistic studies of lightweight materials – A Review 轻型材料的弹道研究综述

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-08-09 DOI: 10.30464/jmee.2020.4.1.7

S. Balaji, S. Kumar, K. Moorthy, M. Javeed, D. Dharanidharan

引用次数: 0

Optimization of machining parameters during end milling of super alloys using Grey based Taguchi method coupled with entropy measurement technique 基于灰色的田口法结合熵测量技术优化高温合金立铣削加工参数

JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering Pub Date : 2020-08-09 DOI: 10.30464/jmee.2020.4.1.47

R. Sreenivasulu, C. S. Rao

{"title":"Optimization of machining parameters during end milling of super alloys using Grey based Taguchi method coupled with entropy measurement technique","authors":"R. Sreenivasulu, C. S. Rao","doi":"10.30464/jmee.2020.4.1.47","DOIUrl":"https://doi.org/10.30464/jmee.2020.4.1.47","url":null,"abstract":": High-quality products include those with better surface quality and texture, close dimensional tolerances and form accuracies at precise level, increase fatigue life and burr-free. Burr formation is one of the most common inevitable facts occurring in all material removal processes, reduces assembly and machined part quality. But, burr formation during milling is a more complex mechanism compare to remaining machining burrs and leads to numerous difficulties during the deburring process. To prevent this, one should optimize the combination of cutting parameters during machining itself. In order to build up a link between quality and productivity and to attain the same in the cost-effective way, the present work concentrate on multi objective optimization of CNC end milling process parameters. Multiple performance characteristics with respect to surface quality and performance index like assembly work have been put up, to assess an equivalent single quality index (called grey relational grade) has been optimized finally by Grey based Taguchi method. After that priority weight of individual quality and performance attributes has been estimated by entropy measurement technique on the basis of relative significance and check the feasibility of the proposed technique has been demonstrated in this context.","PeriodicalId":32811,"journal":{"name":"JEMMME Journal of Energy Mechanical Material and Manufacturing Engineering","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88036622","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: 2