2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE)最新文献_第5页

Numerical analysis of Magnus wind turbine Magnus风力机的数值分析

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549533

D. Aneesh, Ronith Stanly, S. Sagaram, S. Suneesh

{"title":"Numerical analysis of Magnus wind turbine","authors":"D. Aneesh, Ronith Stanly, S. Sagaram, S. Suneesh","doi":"10.1109/ICMAE.2016.7549533","DOIUrl":"https://doi.org/10.1109/ICMAE.2016.7549533","url":null,"abstract":"Magnus rotor is essentially a rotating cylinder that generates lift due to Magnus effect. The effect has been generating curiosity in a wide variety of fields ranging from sports to alternate energy. The wind turbine under investigation replaces tradition blades that have an airfoil cross-section, with such Magnus rotors. In this paper, Magnus wind turbines with three and five rotors have been analyzed at various velocity ratios and tip speed ratios. The primary motive is to find the best operating conditions for obtaining a higher lift to drag coefficient for both three and five rotor turbines, so that it can generate more power with the least available wind. It has been observed that the higher ratio of coefficient of lift to coefficient of drag values were obtained for lower values of tip speed ratio, which is in contrast to the requirement of higher tip speed ratios for turbines with airfoil cross-section. This translates to the fact that Magnus wind turbines can be an efficient solution to the generation of wind power with less noise generation, since the noise generated by a wind turbine decreases with decrease in the tip speed ratio.","PeriodicalId":371629,"journal":{"name":"2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131139204","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: 3

Numerical investigation of coefficient of friction in copper powder compaction process at micro scale 铜粉微尺度压实过程中摩擦系数的数值研究

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549521

F. Guner, H. Sofuoğlu, Omer Necati Cora

引用次数: 2

Application of non filtering analytic wavelet transform for the investigation of rotating stall inception in low speed compressor 应用非滤波解析小波变换研究低速压缩机旋转失速产生

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549582

A. Arshad, Qiushi Li, Tianyu Pan

{"title":"Application of non filtering analytic wavelet transform for the investigation of rotating stall inception in low speed compressor","authors":"A. Arshad, Qiushi Li, Tianyu Pan","doi":"10.1109/ICMAE.2016.7549582","DOIUrl":"https://doi.org/10.1109/ICMAE.2016.7549582","url":null,"abstract":"Rotating stall inception in low speed axial compressor is experimentally investigated by using temporal casing pressure signals from the circumferentially distributed pressure transducers. At first, fundamental technique of visual inspection is implemented by the application of series of low pass frequency filters. Only small filter ranges reveal rotating stall disturbance, each exhibiting different rotating speed of stall disturbance and stall cell. Results are highly dependent on filter size, which found to be a critical limitation. In the next step, results of filtered signals are compared by using a newly developed non-filtering AWT program. AWT offers a beneficial tool for providing rotating stall inception information without employing any pre-filtering limitation. One-step execution technique with features of FFT and wavelet transform, AWT successfully verified the results from the filtered signals obtained after the application of different filter ranges. Verification of filtered signal results with AWT can be a useful approach in stall inception study.","PeriodicalId":371629,"journal":{"name":"2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128728867","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

Fatigue lifetime estimation of the solid rocket motor charge by road roughness loads on mechanical methods 基于路面不平度载荷的固体火箭发动机装药疲劳寿命估计

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549601

Zhang Weiyao, Tu Xiaozhen, Dong Tianbao, W. Wenlong, Li Wei

{"title":"Fatigue lifetime estimation of the solid rocket motor charge by road roughness loads on mechanical methods","authors":"Zhang Weiyao, Tu Xiaozhen, Dong Tianbao, W. Wenlong, Li Wei","doi":"10.1109/ICMAE.2016.7549601","DOIUrl":"https://doi.org/10.1109/ICMAE.2016.7549601","url":null,"abstract":"In the rocket transportation the road roughness load can cause its solid motor charge to vibrate randomly. To get information about the motor charge's dynamic characteristic and damage degree, this paper calculated the charge's vibration responses by road excitations on the numerical method of mechanical modeling. First the rocket launcher's simplified model was built and the transfer function was obtained. Then By the road roughness excitation PSDs (Power spectral density) response PSDs of the rocket's supporting points on the launcher were calculated. Moreover the rocket FEM model was established and its random vibration responses were acquired by the launcher's supporting point excitations (namely response PSDs of the rocket's supporting points). At last by Miner liner cumulative damage law and the danger point's stress results the motor charge's fatigue damage amount was solved. Results show that in the rocket transport process road loads can lead to the motor charge's remarkable structural vibration as well as fatigue damage and with loading time increasing it comes into the structural failure in the end.","PeriodicalId":371629,"journal":{"name":"2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127252332","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: 1

The influence of secondary flow structures in a turbocharger turbine housing in steady state and pulsating flow conditions 稳态和脉动工况下涡轮增压器涡轮壳内二次流结构的影响

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549526

S. P. Lee, M. Jupp, A. K. Nickson

引用次数: 7

Fabrication and properties of optically transparent silica aerogels for hypervelocity particle capture 用于超高速粒子捕获的光学透明二氧化硅气凝胶的制备及其性能

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549517

Liu Guangwu, Li Yangang

引用次数: 1

A study on the influence of friction on loading performance of electro-hydraulic friction load simulator for actuator test 摩擦对执行器试验电液摩擦负载模拟器加载性能影响的研究

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549596

Chenghu Jing, Hongguang Xu

引用次数: 2

Effect of constant and variable radii fillet on secondary flow field of transonic turbine stage's Nozzle Guide Vane 定半径和变半径圆角对跨声速涡轮级导叶二次流场的影响

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549599

K. Ananthakrishnan, M. Govardhan

引用次数: 3

Detection of JL-1 satellite's jitter using multimodal pushbroom cameras JL-1卫星多模态推扫相机抖动检测

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549616

Zhao-Xiang Zhang, Guo-dong Xu

引用次数: 0

Actuation and control of a novel wing flap architecture with bi-modal camber morphing capabilities 具有双模态弧度变形能力的新型机翼襟翼结构的驱动与控制

2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2016-07-18 DOI: 10.1109/ICMAE.2016.7549578

M. Noviello, F. Rea, M. Arena, R. Pecora, F. Amoroso

{"title":"Actuation and control of a novel wing flap architecture with bi-modal camber morphing capabilities","authors":"M. Noviello, F. Rea, M. Arena, R. Pecora, F. Amoroso","doi":"10.1109/ICMAE.2016.7549578","DOIUrl":"https://doi.org/10.1109/ICMAE.2016.7549578","url":null,"abstract":"Modern aerospace research programs are increasingly oriented towards adaptive wing structures for greening the air transport in the near future. New structural concepts implementing and integrating innovative technologies are mandatory for succeeding in this critical task. Among these, the so-called morphing structures are taken into account in aerospace applications, since they ensure the structural shape control in order to optimize the aerodynamic efficiency during the different flight phases. Among the most ambitious research projects launched in Europe, the JTI - Green Regional Aircraft (GRA) is placed in foreground for the design and the demonstration of a true-scale morphing flap applicable to the Natural Laminar Flow (NLF) wing of a 130-seats reference aircraft belonging to EASA CS25 category. In this framework, the authors intensively worked on the definition of a specific actuation and control system layout properly enabling two flap operational modes: overall camber morphing in deployed configuration, during take-off and landing, to enhance high lift performances; upwards and downwards deflection of the flap trailing edge (nearly the 10% of the local chord) in stowed configuration, to improve wing aerodynamic efficiency in cruise. For this purpose, a digital logic control law was opportunely implemented into controller devices by using LTI DriveManager® software. Obtained results have been presented in terms of controlled morphed shapes, showing an excellent correlation with respect to the target geometries imposed by design requirements.","PeriodicalId":371629,"journal":{"name":"2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126228246","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: 10