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显微粒子成像测速系统(Micro PIV)
显微粒子成像测速系统(Micro PIV)

显微粒子成像测速系统(Micro PIV)

¥80万 - 100万

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LaVision GmbH

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FlowMaster®-Micro

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欧洲

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北京欧兰科技发展有限公司
  • 金牌
  • 第17年
  • 一般经销商
    • 营业执照已审核
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核心参数

测量效果： 平面（二位/三维）

产地类别： 进口

测量频率： 低频

测速范围： 0-10m/s

测定准确度： 1%

测量区域大小： 10um-1mm

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看了粒子图像测速仪(PIV)的用户又看了

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        FlowMaster® 显微PIV系统设计用来测量微米级空间分辨率下示踪颗粒速度场。它利用粒子成像测速原理，将常规 PIV 应用拓展到微尺度范围。
        系统采用双脉冲Nd:YAG激光作为光源，通过大数值孔径光圈荧光显微镜聚焦到微流动模型上。微流动采用荧光颗粒作为示踪物，通过显微镜采集到的颗粒散射光的波长比入射光波长要长。由于波长不同，这个光波信号通过一个滤波透镜与入射光分离开，并由FlowMaster®系列相机拍摄下来。双曝光产生的颗粒图像，经过高级精密的PIV算法处理后获得微尺度流场的速度场结果。
系统主要参数指标：
1. 速度场测试范围：100微米至宏观尺度
2. 典型应用所需显微物镜放大倍率：5X至40X
3. 显微物镜类型：平场长工作距离荧光物镜。
4. 标配CCD相机灵敏度：65 % @ 500 nm
5. 标配CCD相机分辨率：1376 x1040 像素
6. 典型情况下的测量速度上限：采用5X显微物镜，双帧时间间隔为500纳秒，则测量速度上限约为20米/秒。
7. 显微镜主体可选正置和倒置两种型号。
8. 速度场分析精度：可达0.1像素。


相关方案

综合其他医疗/卫生生物产业能源/新能源农/林/牧/渔
  • 流体中速度场检测方案
    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 con guration 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 con guration.

    农/林/牧/渔 2012-07-10

  • 流体中速度场检测方案
    Corning® Advanced-Flow™ glass reactors are continuous flow reactors with hydraulic diameter in the range of millimetres. These devices make possible the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, these reactors provide a platform for developing innovative chemistries that have never been considered industrially practical, either for hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Corning Advanced-Flow™ glass reactors are composed of multiple inter-connected glass devices having different designs, offering the advantages of process intensification and glass-specific qualities like transparency and very good chemical resistance. This paper presents the comparison between experimental and CFD modelling results of a family of Corning glass devices aiming at achieving and maintaining very efficient mixing along the dwell time path. Numerical results are compared to experimental data: velocity profiles measured by micro-PIV means, pressure drop and heat transfer coefficient. The satisfactory agreement between experimental results and CFD modelling proved the utility of numerical simulations in the development of new designs. Therefore, CFD tools help on one hand to predict the performance of new devices and on the other hand to optimize their design in order to improve their behaviour. Thus, CFD simulation facilitates the design and reduces time and cost for the investigation.

    其他 2011-03-07

  • 微流体中速度场,2D3C速度场检测方案(粒子图像测速)
    In this paper a comparative study is presented to assess the uncertainty of two methods for 3C3D velocimetry in microscopic flows: stereoscopic micro-particle image velocimetry (S-μPIV) and wavefront-deformation, or astigmatism, micro-particle tracking velocimetry (WD-μPTV). First, the main parameters affecting both methods’ measurement uncertainty are identified, described and quantified. Second, the test case of flow over a backward-facing step is analyzed using both methods. For comparison standard 2D-2C μPIV measurements and numerical flow simulations are shown as well. Advantages and disadvantages of both methods are discussed.

    其他 2011-02-26

  • 溶液,流体中速度场,速度矢量场,显微速度矢量场检测方案(粒子图像测速)
    Increasingly smaller electronics requires improvement in performance of cooling systems to keep it operating reliably. We present herein a novel experimental study of convective heat transfer in serpentine microchannels with segmented liquid–liquid emulsions. It is demonstrated that this concept yields significant Nusselt number enhancement in microchannel heat sinks compared to that obtained using single phase liquid cooling. Laser Induced Fluorescence (LIF) is employed to measure temperature of the coolant with and without droplets, and micro-PIV is used to determine velocity field. For the segmented flow, up to four-fold increase of the Nusselt number was observed compared to pure water flow.

    其他 2011-02-26

  • 流体中3D3C流场检测方案(CCD相机)
    采用LaVision公司的DaVis8.2软件平台和两台CCD相机，建立了一套双视角显微层析成像全息流场测量系统。

    其他 2019-07-26

  • 边界层中流场,速度矢量场检测方案(CCD相机)
    采用ImagerProX4M相机。长工作距离显微镜。测量一个粗糙的砂轮圆盘在液体池中旋转时所产生的流场。

    其他 2017-02-13

  • 边界层流动中边界层显微速度矢量场检测方案(CCD相机)
    采用LaVision公司的ImagerSX4M相机，两套Infnity K2, DistaMax型长工作距离显微镜，对3.246mm x 3.874mm的视场进行了流场测量。获得了温度驱动的边界层流动的可视化流场。

    其他 2017-02-09

  • 多孔介质中双尺度瞬态流动行为的显微PIV研究检测方案(粒子图像测速)
    Injection processing of composite materials most often includes infiltration of a thermoset resin into a multi-scale porous fabric. Controlling the fluid flow within the multiscale fabric is essential for the quality of the final composite material, since the transport of fluid between regions with different scales plays an important role in phenomena such as void formation and filtration of particle doped resins. In this work, the transient flow behaviour in dual scale porous media is investigated with Micro Particle Image Velocimetry in order to enhance the knowledge and control of the processing of multi-scale composites so that their quality can be improved. Experiments show that the fluid transport between the two scales can be controlled by the injection velocity. Validation of the measured velocity fields furthermore shows excellent agreement with theory.

    其他 2016-10-26

  • 微流控系统红细胞聚集对非牛顿血液中速度场粘度检测方案(粒子图像测速)
    采用LaVision公司的显微粒子成像测速系统MITAS对双流体低剪切速率微流控系统中红细胞的聚集和对非牛顿血液粘度的影响进行了实验测量研究

    医疗/卫生 2019-12-06

  • 二尖瓣机械心脏瓣膜中显微速度场检测方案(粒子图像测速)
    采用LaVision的显微粒子成像测速系统，对二尖瓣机械心脏瓣膜铰链区模型的铰链区的流场进行了测量和分析。

    医疗/卫生 2019-12-04

  • 颅内侧壁动脉瘤中流动特性的计算和实验研究检测方案(粒子图像测速)
    Pulsatile flow patterns in an intracranial side-wall aneurysm of a human carotid artery were investigated experimentally using microscopic particle image velocimetry on a flexible wall model. Numerical calculations were performed on a stiff-walled artery with the same geometry and flow conditions. Experimental results showed cyclical vortex formation and decay within the aneurysm. Numerical simulations agreed well with the experimental results and indicate that vortex position and magnitude are due to pulsatile flow conditions rather than wall elasticity. However, the present results suggest that wall compliance plays a role in sustaining the pressure gradients needed for vortex development.

    医疗/卫生 2016-10-24

  • 流体中速度场检测方案
    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 con guration 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 con guration.

    农/林/牧/渔 2012-07-10

相关仪器 相关资料
  • DaVis-PIV系统图像数据采集和硬件控制的集成软件平台

    DaVis是德国LaVsion公司推出的应用于反应和非反应流场测量，材料表面成像和追迹以及超快成像的智能（激光）成像技术的完整软件平台。 DaVis以灵活的图像采集模块，可用户定制的应用界面和特殊应用软件包三大特色功能成就了完美的成像系统所需软件。 DaVis软件可满足用户以纳秒量级的精度进行相机曝光，外部照明以及外部触发的同步控制并能自由选择采集图像序列。除此之外，DaVis软件拥有各种成像设置和控制的功能。 DaVis软件对用户开放，这种特色结合软件本身的宏命令语言，能够使得成像系统快速适应从高深的科学研究到可靠的工业应用等各种不同测量需求。 不仅如此，DaVis还拥有灵活的图像采集模式，先进的图像处理算法，多维图像数据的智能存储和显示，多种硬件的软件控制等功能。 集成了2DPIV和3DPIV功能模块的DaVis软件，参加了连续三年的PIVChallenge（http://www.pivchallenge.org）评测活动，均取得了优异成绩。客观证明了DaVis软件平台的出色性能。 PIVChallenge的组织者将两次PIVChallenge 活动的结果作了详尽的总结，并将结果发表在了公开的网站和杂志上。有关文章和下载网址如下： 1. Stanislas M, Okamoto K, Kaehler C (2003) Main results of the First International PIV Challenge. Meas Sci Technol 14:R63-R89 下载地址： http://stacks.iop.org/0957-0233/14/R63 或： http://www.oplanchina.com/download/Stanislas PIV challenge 2001.pdf 2. Stanislas M, Okamoto K, Kaehler C, Westerweel J (2005) Main results of the Second International PIV Challenge. Exp Fluids 39: 170-191 下载地址：http://www.oplanchina.com/download/PIV Challenge 2003 Results.pdf

    2171MB 2008-01-19
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