FME Transactions最新文献_第6页

Control of the side brush street sweeper for various road surfaces using PID and sliding mode controllers 用PID和滑模控制器控制各种路面的侧刷清扫车

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2303318h

H. Thanh, Thang Viet, T. Duc, T. Quoc

引用次数: 0

Framework for evaluating solution concepts in TRIZ-based inventive designs using a functional, behavioral, and structural modeling approach 使用功能、行为和结构建模方法评估基于trz的创造性设计中的解决方案概念的框架

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304521y

Yehya Irshad, Amadou Coulibaly, Hicham Chibane, Remy Houssin

引用次数: 0

Effect of Al2O3/CuO hybrid nanoparticles dispersion on melting process of PCM in a triplex tube heat storage Al2O3/CuO杂化纳米颗粒分散对三管蓄热中PCM熔化过程的影响

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304606s

Ibrahim Sadiq, Sattar Aljabai, Abdulhassan Karamallah

{"title":"Effect of Al2O3/CuO hybrid nanoparticles dispersion on melting process of PCM in a triplex tube heat storage","authors":"Ibrahim Sadiq, Sattar Aljabai, Abdulhassan Karamallah","doi":"10.5937/fme2304606s","DOIUrl":"https://doi.org/10.5937/fme2304606s","url":null,"abstract":"This research conducts an experimental and theoretical investigation of the melting characteristics of a phase change material in a triplex tube heat storage. A three-dimensional model is simulated numerically employing Ansys Fluent software. The enthalpy porosity method is chosen for solving the phase transition of paraffin wax. A blend of equal-volume CuO and Al2O3 hybrid nano-additives was used as conductive material to enhance heat transfer in PCM, which can be considered the originality of this study. At first, the differential scanning calorimeter (DSC) analysis was performed to determine the paraffin thermo-physical properties. Various volume concentrations of 0.4%, 0.8%, 1.6%, and 3.2% were dispersed in paraffin. Besides that, the experiment was performed under different mass flow and inlet fluid temperatures to study the effect of these two parameters on the phase transition rate. The outcomes indicate that adding an Al2O3/CuO hybrid nanoparticle of volume fraction of 0.4-3.2% causes a reduction in total charging time between 10% and 19%. The result also showed that the theoretical efficiency boosts from 61.7% to 84.8% as heat transfer fluid (HTF) inlet temperature increases from 62 °C to 78 °C.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135610796","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

Numerical analysis of stagger Supersonic biplane at off-design condition with trailing edge flap 带尾缘襟翼的错开超音速双翼飞机非设计工况数值分析

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2302253p

V. Patidar, S. Joshi

{"title":"Numerical analysis of stagger Supersonic biplane at off-design condition with trailing edge flap","authors":"V. Patidar, S. Joshi","doi":"10.5937/fme2302253p","DOIUrl":"https://doi.org/10.5937/fme2302253p","url":null,"abstract":"Supersonic biplanes can achieve low-boom and low-drag supersonic flights. In the present study, aerodynamic analysis of a two-dimensional stagger Bussmann biplane (staggered upper element by 0.5c) at zero degrees angle of attack with trailing edge flap was investigated with the help of computational fluid dynamics (CFD) tools. Due to the wave cancellation effect, the Busemann biplane delivers a positive drag reduction at design supersonic Mach values. However, when operating outside of its intended parameters, it performs worse, and the wave cancellation effect has no beneficial effects on reducing drag. Another issue with the Busemann biplane is flow chocking, which produces a potent bow shock wave in front of the aircraft. This paper attempts to address low aerodynamics efficiency problems during take-off through numerical simulation of a staggered Busemann biplane with trailing edge flaps at zero degrees angle of attack. It was confirmed that the staggered biplane airfoil with flap has better aerodynamic performance during take-off at lower subsonic free stream Mach numbers. In 2D wings, the effect of flow chocking and hysteresis as starting problems, which arise when the biplanes accelerate from low Mach numbers, is reduced by using the suitable dimension and angle of rotation of the flap, and the flap is effective in settling these issues.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"61 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86119188","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

Mobile robot for monitoring park trees: Design and modeling 公园树木监测移动机器人:设计与建模

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2303423p

M. Polishchuk, M. Tkach, O. Zhuchenko, Y. Kornaga

{"title":"Mobile robot for monitoring park trees: Design and modeling","authors":"M. Polishchuk, M. Tkach, O. Zhuchenko, Y. Kornaga","doi":"10.5937/fme2303423p","DOIUrl":"https://doi.org/10.5937/fme2303423p","url":null,"abstract":"One of the modern problems in the field of ecology is the creation of environmentally friendly equipment for monitoring and maintaining trees in parks and forests. The traditional use of forest machines and self-propelled tractors with internal combustion engines has a negative impact on the environment as a result of pollutant emissions, i.e., combustion products and fuel residues. An alternative to this tradition can be the use of mobile robots with remote control of their electric drives when performing such technological operations as pruning bacterial growths of trees and diagnosing the state of tree massifs. The article proposes a fundamentally new mobile robot design for monitoring park trees. The main differences between the robot are the new designs of the body and the walking mechanisms of the mobile robot. These design differences provide the robot with high maneuverability when choosing the path of movement along the tree trunk and reliable holding of the robot body on the tree at a sufficient movement speed to perform diagnostics of the state of tree massifs. The article also describes the dynamic models of the movement of a mobile robot along a tree trunk. It presents the simulation results in the form of graph-analytical dependencies of the robot parameters, which constitutes the scientific aspect of the problem. The main motivation of the conducted research is the creation of environmentally friendly equipment in the form of a mobile robot with a reliable system of retention on the surface moving and sufficient performance to perform park tree monitoring operations.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"2010 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82559932","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 of rope bending fatigue life based on wire breaking rate 基于断丝率的绳索弯曲疲劳寿命预测

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2301059f

P. Freddi, L. Solazzi, G. Donzella

引用次数: 0

Investigation of welded joints of long-term operated gas pipeline controllable rolled X70 steel 长期运行燃气管道可控轧制X70钢焊接接头的研究

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2301071n

L. Nyrkova, L. Goncharenko, A. Rybakov, S. Osadchuk, Anatoly Klymenko, Yulia Kharchenko

引用次数: 1

Optimization potentials of laser powder bed fusion: A conceptual approach 激光粉末床熔合的优化潜力:一个概念方法

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2303432s

Josip Strutz, I. Samardzic, K. Simunovic

引用次数: 0

Experimental and CFD analysis of a gas-lubricated foil thrust bearing for various foil configurations 不同叶型的气体润滑叶型止推轴承的实验与CFD分析

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304532r

R.N. Ravikumar, K.J. Rathanraj, Kumar Arun, S. Supreeth

{"title":"Experimental and CFD analysis of a gas-lubricated foil thrust bearing for various foil configurations","authors":"R.N. Ravikumar, K.J. Rathanraj, Kumar Arun, S. Supreeth","doi":"10.5937/fme2304532r","DOIUrl":"https://doi.org/10.5937/fme2304532r","url":null,"abstract":"Thrust foil bearings operating at hydrodynamic conditions are self-acting (aerodynamic) bearings that support high-speed shafts at mild loading conditions with air as a lubricant and are generally used in low-power gas turbines. This paper presents an experimental study and a detailed computational analysis of dynamic characteristics of the foil thrust bearing (FTB) in terms of load-carrying capabilities as a function of thrust runner speed and gap between the bearing assembly and the runner by considering the effect of bearing parameters such as number of foils, shape of the foils, and assembly of foils on the bearing pad. The parametric study was conducted on a newly conceptualized bearing test rig capable of rotating up to 45,000 rpm speeds that measured the axial loads of the air foil thrust bearings (AFTB). The computational model of the foil thrust bearings for various configurations with top foils is simulated using multiphysics software for foil deflections and pressure distributions on the foil surface. The numerical results were compared with the experimental values, while the air foil thrust bearings with multilayered foils called cascaded foils (patented) had higher load capability in comparison to other conventional bearing models.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135612325","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

Robust algorithm to learn rules for classification: A fault diagnosis case study 鲁棒分类规则学习算法:故障诊断案例研究

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2303338b

A. Balaji, V. Sugumaran

引用次数: 0