核心参数
测量效果: 立体(3D3C)
产地类别: 进口
测量频率: 低频
测速范围: 0-2km/s
测定准确度: 1%
测量区域大小: 0-1mx1m
LaVision GmbH粒子图像测速FlowMaster®-Dual的工作原理介绍
粒子图像测速FlowMaster®-Dual的使用方法?
LaVision GmbHFlowMaster®-Dual多少钱一台?
粒子图像测速FlowMaster®-Dual可以检测什么?
粒子图像测速FlowMaster®-Dual使用的注意事项?
LaVision GmbHFlowMaster®-Dual的说明书有吗?
LaVision GmbH粒子图像测速FlowMaster®-Dual的操作规程有吗?
LaVision GmbH粒子图像测速FlowMaster®-Dual报价含票含运吗?
LaVision GmbHFlowMaster®-Dual有现货吗?
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激波湍动边界层相互作用失稳特性的双平面PIV研究
The unsteady organization and temporal dynamics of the interaction between a planar shock wave impinging on a turbulent boundary layer at a free stream Mach number of M∞=1.69 is investigated experimentally by means of dual-plane Particle Image Velocimetry (dual-PIV). Two independent PIV systems were combined in two component mode to obtain instantaneous velocity fields separated by a prescribed small time delay. This enables to obtain, in addition to mean and statistical flow properties, also instantaneously time resolved data to characterize the temporal dynamics of the flow phenomenon in terms of time scales, temporal correlations and convective velocities. The characteristic time scales for the incoming boundary layer, the separation region and the reflected shock are evaluated by means of measuring the temporal auto-correlation coefficient in the complete flow field for a range of time delays from 5 ms to 2000 ms. These auto-correlation fields are used to quantify the time scales in selected regions of the flow. This permits resolving the dominant time scales within the boundary layer and the interaction region. I. Introduction
其他
2012/01/29
评价比较光学流体分析手段的方法
In this report we present the methodology we are using in the AMI group to compare optic flow estimation methods in the context of the FLUID Specific Targeted Research Project - Contract No 513633 founded by the CEE. The main goal of this report is to try to unify comparison criteria between the different parnerts in order to share information and conclusions. We think that it is one of the topics we have to address in Las Palmas Meeting December next. In order to describe the methodology we use, we divide it in five steps: 1. We choose a number of optic flow estimation methods 2. We choose an image sequence dataset to apply the methods. 3. We apply the methods and we store the results in a ASCII file using an standard format 4. We define a number of statistics to compare the methods (we use the ASCII files as basic information to compare). 5. We compute the statistics for each pair of methods and we generate tables with the information. To help result interpretation we use arrow images and in the case we know the optic flow groundtruth we generate image to provide the information about what method perform better in the different areas of the image. To illustrate this approach and to fit ideas we present the results of this approach in a particular image sequence provided by LaVision in sections from 1.1 to 1.4. Then, in section 2 we remark some of the difficulties we have found in our work, which should be discussed in order to be able to compare results provided by all the partners of the FLUID project.
其他
2012/07/01
用于粒子成像测速(PIV)的粒子成像测速和表面处理的新方法
PIV systems rely on a combination of seed particles, laser light intensity, and camera positioning to collected velocity data. Careful attention is needed when selecting the ap- propriate setup conguration for PIV systems. This paper focuses on several areas for improvement in PIV data collection for a compressible turbulent boundary layer study on a at plate using MVG's. The topics include determining the seed particle surface preparation for a at plate, and PIV system conguration.
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2012/07/10
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企业名称
北京欧兰科技发展有限公司
企业信息已认证
企业类型
信用代码
110108003886158
成立日期
2002-06-14
注册资本
50000
经营范围
技术开发、技术转让、技术咨询、技术服务;计算机技术培训;基础软件服务;应用软件服务;计算机系统服务;数据处理;计算机维修;销售计算机、软件及辅助设备、电子产品、机械设备、通讯设备、五金、交电、化工产品(不含危险化学品及一类易制毒化学品)、文化用品、体育用品、日用品。(企业依法自主选择经营项目,开展经营活动;依法须经批准的项目,经相关部门批准后依批准的内容开展经营活动;不得从事本市产业政策禁止和限制类项目的经营活动。)
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