ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities最新文献_第5页

A proposed methodology for computational fluid dynamics code verification, calibration, and validation 提出了一种计算流体动力学代码验证、校准和验证的方法

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519133

D.P. Aeschliman, W. Oberkampf, F.G. Blottner

{"title":"A proposed methodology for computational fluid dynamics code verification, calibration, and validation","authors":"D.P. Aeschliman, W. Oberkampf, F.G. Blottner","doi":"10.1109/ICIASF.1995.519133","DOIUrl":"https://doi.org/10.1109/ICIASF.1995.519133","url":null,"abstract":"Verification, calibration, and validation (VCV) of Computational Fluid Dynamics (CFD) codes is an essential element of the code development process. The exact manner in which code VCV activities are planned and conducted, however, is critically important. It is suggested that the way in which code validation, in particular, is often conducted-by comparison to published experimental data obtained for other purposes-is in general difficult and unsatisfactory, and that a different approach is required. This paper describes a proposed methodology for CFD code VCV that meets the technical requirements and is philosophically consistent with code development needs. The proposed methodology stresses teamwork and cooperation between code developers and experimentalists throughout the VCV process, and takes advantage of certain synergisms between CFD and experiment. A novel approach to uncertainty analysis is described which can both distinguish between and quantify various types of experimental error, and whose attributes are used to help define an appropriate experimental design for code VCV experiments. The methodology is demonstrated with an example of laminar, hypersonic, near perfect gas, 3-dimensional flow over a sliced sphere/cone of varying geometrical complexity.","PeriodicalId":339620,"journal":{"name":"ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115505576","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: 28

Laser anemometry for in-flight flow investigations 用于飞行中气流调查的激光风速计

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519129

H. Jentink, M. Beversddorff, W. Forster

{"title":"Laser anemometry for in-flight flow investigations","authors":"H. Jentink, M. Beversddorff, W. Forster","doi":"10.1109/ICIASF.1995.519129","DOIUrl":"https://doi.org/10.1109/ICIASF.1995.519129","url":null,"abstract":"Two laser anemometers, a differential laser Doppler anemometer (LDA) of NLR and a laser-two-focus (L2F) anemometer of DLR, were installed in a research aircraft to demonstrate their capabilities for in-flight flow investigations. Both anemometers use a diode laser as a light source and an avalanche photodiode for detecting scattered light. The aircraft was flown in different atmospheric conditions, e.g. close to temperature inversion layers, in clouds and in polluted air above industrial regions to investigate whether it is possible to measure without artificially seeding air. The optical access was provided by two glass inserts in the emergency exit of the aircraft. Measurement volumes were traversed through the flow perpendicular to the fuselage. In this manner, the anemometers measured mean velocities, turbulence levels and for L2F additionally to these quantities the flow direction in the boundary layer of the fuselage. A ground test with the anemometers was performed before the flight tests. Experience with parallel operation of the anemometers was gained in a free jet and properties of both systems were investigated. Information from the tests enabled us to analyze performance data in the free jet and in flight. The experiment shows that laser anemometry can be applied successfully for in-flight flow measurements. The inherent characteristics of the technique are exploited extensively in windtunnel tests and in other ground applications, and are also promising for in-flight experiments. In particular the absence of flow disturbance, the high bandwidth and the high accuracy are useful in flight.","PeriodicalId":339620,"journal":{"name":"ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115065448","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: 7

Experimental investigation of supersonic/hypersonic flow fields based on a new approach using holographic optical techniques 基于全息光学技术的超声速/高超声速流场实验研究

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519116

G. Toker, D. Levin, J. Stricker

引用次数: 2

Demonstration of a stabilized alumina/ethanol colloidal dispersion technique for seeding high temperature air flows 用于播种高温气流的稳定氧化铝/乙醇胶体分散技术的演示

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519125

M. Wernet, G. J. Skoch, J. H. Wernet

引用次数: 8

Computer-aided analysis of interferometric images of unsteady aerodynamic flows 非定常气动干涉图像的计算机辅助分析

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519475

M. Wilder, M. Chandrasekhara, L. Carr

引用次数: 1

Instrumentation for flow calibration and vehicle measurements in hypervelocity flows in the LENS facility LENS设施中用于流量校准和超高速流车辆测量的仪器

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519478

M. Holden, J. Craig, J. Kolly

{"title":"Instrumentation for flow calibration and vehicle measurements in hypervelocity flows in the LENS facility","authors":"M. Holden, J. Craig, J. Kolly","doi":"10.1109/ICIASF.1995.519478","DOIUrl":"https://doi.org/10.1109/ICIASF.1995.519478","url":null,"abstract":"A review is presented of the instrumentation employed in the LENS facility to obtain measurements of flow field quality, the aerothermal characteristics of hypervelocity vehicles, the aero-optic performance of seekerheads and the operational performance of hydrogen-powered scramjet configurations. The basic design and operation of the LENS tunnel is briefly reviewed. Intrusive and non-intrusive instrumentation which are being employed to measure the distribution of properties in the exit plane of the nozzle and over hypervelocity vehicle configurations are described. The surface heat transfer, pressure and skin friction instrumentation which are routinely employed to define the aerothermal properties of hypersonic vehicles are discussed. The aero-optical instrumentation suite which has been developed specifically for the LENS facility to measure seekerhead performance is discussed in detail. Finally, we present instrumentation which will be used to measure the performance of hypersonic scramjet combustion in the LENS facility at velocities from 6000 ft/sec to 15000 ft/sec.","PeriodicalId":339620,"journal":{"name":"ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123000499","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

Laminar and turbulent shear stress measurement using surface hot-wire and film gauges 用表面热线和薄膜计测量层流和湍流剪应力

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519111

E. Savory, L. Gaudet, N. Toy

引用次数: 1

Diagnostics by electron beam fluorescence in hypersonics 电子束荧光在高超声速中的诊断

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519120

A. Mohamed, T. Pot, B. Chanetz

引用次数: 19

Use of the modified miniature-LDA in high spatial resolution application 改进的微型lda在高空间分辨率应用中的应用

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519127

S. Damp

引用次数: 3

The evaluation of shear sensitive liquid crystals at Mach 3 3马赫剪切敏感液晶的评价

ICIASF '95 Record. International Congress on Instrumentation in Aerospace Simulation Facilities Pub Date : 1995-07-18 DOI: 10.1109/ICIASF.1995.519114

P. Disimile, N. Toy, E. Savory

引用次数: 2