20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03.最新文献_第4页

The evolved 100 kHz PWM-CTA 演进的100千赫PWM-CTA

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274873

T. J. Hicks, Joshua K. Schwannecke, M. J. Norconk, A. Hellum, John Foss

引用次数: 1

A recirculating flow studied by three colour particle image velocimetry 用三色粒子图像测速法研究了一个循环流

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274872

S. de Ponte, S. Malavasi, C. Svelto, G. Matteazzi

{"title":"A recirculating flow studied by three colour particle image velocimetry","authors":"S. de Ponte, S. Malavasi, C. Svelto, G. Matteazzi","doi":"10.1109/ICIASF.2003.1274872","DOIUrl":"https://doi.org/10.1109/ICIASF.2003.1274872","url":null,"abstract":"In the last ICIASF conference a novel particle image velocimetry (PIV) system using two different time intervals by means of three colour flashes was presented. The system was jointly developed for the aerospace, hydraulics and electronic departments of \"Politecnico di Milano\", for the study of water flow and for the water tunnel simulation of aerodynamic phenomena. Here an improved three colour PIV system version is tested on a fundamental physical model. In this test we study the flow field around an obstacle normal to the free-stream direction. The phenomenon modelled is a water stream flowing over a sill, were we have both upstream and downstream recirculation and large velocity gradient. By using two different time intervals three velocity fields were obtained by applying the cross-correlation algorithm on the same image. This information was used to solve the whole velocity field with a more uniform distribution of the uncertainty of velocity measurement. The latter is mainly due to the displacement of the particles, therefore it was possible to choose the best one, having three different possibilities. Moreover different and close time delay allowed the evaluation of local rate of change of velocity which was computed using a first-order differencing scheme.","PeriodicalId":166420,"journal":{"name":"20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03.","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123320316","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

High brightness, ultra-narrow linewidth Hg source for diagnostics 高亮度，超窄线宽汞源诊断

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274874

R. Miles, S. Zaidi, Lipeng Qian, L. Vasilyak

{"title":"High brightness, ultra-narrow linewidth Hg source for diagnostics","authors":"R. Miles, S. Zaidi, Lipeng Qian, L. Vasilyak","doi":"10.1109/ICIASF.2003.1274874","DOIUrl":"https://doi.org/10.1109/ICIASF.2003.1274874","url":null,"abstract":"Recent work has shown that imaging Rayleigh scattering through atomic and molecular filters provides a very attractive method for flow field diagnostics, including the imaging of temperature, density, and in some cases, velocity fields. The extension of atomic filter technologies to imaging Raman scattering is also of interest. Both Rayleigh and Raman scattering are dramatically stronger in the ultraviolet due to both resonance enhancement and to the frequency to the fourth scaling of the cross section. The development of a high-power, narrow linewidth source in the ultraviolet is, therefore, of significant interest. Mercury absorption cells operating at 254 nm are well suited for these diagnostics. This paper demonstrates that a short pulse-driven, high efficiency mercury lamp can be used to generate ultra-narrow linewidth radiation at 254 nm. The lamp is driven at 9 kHz with high voltage (30 kV), 2 nsec pulses and the spectrum of the radiation seen after several hundred nsec is almost purely the 254 nm line. The linewidth of this mercury lamp is narrow enough so it can be used in conjunction with the mercury vapor filter for both Rayleigh and Raman diagnostics.","PeriodicalId":166420,"journal":{"name":"20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03.","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115068405","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 next generation lifetime PSP imaging systems 下一代全寿命PSP成像系统的开发

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274889

A. Watkins, J. D. Jordan, B. Leighty, J. L. Ingram, D. M. Oglesby

引用次数: 30

Temperature sensitive paint (TSP) for heat transfer measurement in short duration wind tunnels 用于短时间风洞传热测量的温度敏感涂料(TSP)

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274886

V. Mosharov, A. Orlov, V. Radchenko

引用次数: 10

Experimental investigation of shock/vortex interaction for slender canard configurations at supersonic speed 超声速细长鸭翼结构激波/涡相互作用的实验研究

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274875

F. Leopold, F. Jagusinski, C. Demeautis

引用次数: 2

Experimental study on controlling wake vortex in water towing tank 拖曳舱尾流控制的实验研究

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274870

F. Bao, H. Vollmers, H. Mattner

{"title":"Experimental study on controlling wake vortex in water towing tank","authors":"F. Bao, H. Vollmers, H. Mattner","doi":"10.1109/ICIASF.2003.1274870","DOIUrl":"https://doi.org/10.1109/ICIASF.2003.1274870","url":null,"abstract":"An experimental study was carried out to establish a self-destructing vortex wake. Sets of horizontal tail plains were employed to generate additional vortex sheet interacting with the wing vortex sheet of a rectangular wing. The study was made in the water towing tank in Gottingen (WSG), which was instrumented with 2D/3C PIV system, balance and flow visualisation devices. The tailoring of 4 vortices wake systems was achieved by varying horizontal tail plains with different aspect ratios with various incidences, generating various destabilising effects. The study exhibited that the interaction of tail vortices with tip vortices may result in a promising self-destructive mechanism within the wake system in the sense that the vortex core experiences an instability and decay abruptly. Typically, the wake vortex cores could be destabilised by as early as in 30 wing spans downstream with suitable tail settings, instead of more than 100 wing spans for that of a \"clean model\". The possible influence from the finite movement in the water tank due to transient processes of the model (end-effect) was investigated. The influence of the bottom and side wall effects was estimated from comparison of results from a larger water towing tank (HSVA).","PeriodicalId":166420,"journal":{"name":"20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116774154","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: 15

Particle image velocimetry in the crossplane of a supersonic jet in subsonic compressible crossflow 亚音速可压缩横流中超音速射流横截面的粒子图像测速

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274849

S. Beresh, J. Henfling, R. J. Erven

引用次数: 1

MOSAIC project - summary of phase one program MOSAIC项目-一期计划总结

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274856

K. Asai, I. Okura, H. Mizushima

引用次数: 5

The development of a 3C-PIV system for the 12-foot pressure tunnel at NASA Ames Research Center 为NASA艾姆斯研究中心的12英尺压力隧道开发3C-PIV系统

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI: 10.1109/ICIASF.2003.1274844

J. Heineck, S. M. Walker, D.M. Yaste

引用次数: 4