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LaVision SprayMaster 喷雾成像测量系统
LaVision SprayMaster 喷雾成像测量系统
LaVision SprayMaster 喷雾成像测量系统
LaVision SprayMaster 喷雾成像测量系统
LaVision SprayMaster 喷雾成像测量系统
LaVision SprayMaster 喷雾成像测量系统
LaVision SprayMaster 喷雾成像测量系统
LaVision SprayMaster 喷雾成像测量系统

LaVision SprayMaster 喷雾成像测量系统

¥80万 - 100万

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Laser Imaging in Sprays

LaVision‘s SprayMaster laser imaging system applies LIF and Mie imaging on pulsed laser light sheets. While the volume dependent LIF signal scales with the droplet mass, the simultaneously excited Mie signal is proportional to the droplet surface. Hence the LIF/Mie image ratio is used for planar global droplet sizing yielding the Sauter Mean Diamter (D32) distribution over the measured spray cross section.
A special 2-color Tracer-LIF technique allows the simultaneous visualization of the liquid and vapor phase of the evaporating spray.

Spray imaging on laser light sheets measured with the SprayMaster system
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Phase and Space Scan Imaging of
Periodic Sprays

DaVis supports time resolved 3D spray imaging applying phase scans in combination with light sheet traversing. Such a measurement sequence can be programmed in DaVis and then simply started with a button click.

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Combined time (phase) and space scans of a pulsed GDI spray. Shown is the global spray mass distribution
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Multiphase Flow Field Imaging in Sprays

PIV imaging is applied to the spray droplets and the surrounding gas (with additional seeding) for multiphase flow field imaging in sprays using LaVision‘s low and high speed FlowMaster PIV systems.

Product Information

SprayMaster

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  • 喷雾中液滴粒径，浓度，和温度分布检测方案(激光粒度仪)
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  • 直喷发动机中涡旋对空燃混合过程的影响检测方案(尾气检测)
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  • 喷雾,燃料中浓度场检测方案(尾气检测)
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    其他 2019-12-04

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    其他 2019-08-19

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    其他 2019-07-19

  • 植物油中喷雾液滴粒径检测方案(激光粒度仪)
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    食品/农产品 2019-12-04

  • 浮游动物中桡足类潜伏进食者产生的流体信号检测方案(粒子图像测速)
    Zooplankton feed in either of three ways: they generate a feeding current, cruise through the water, or they are ambush feeders. Each mode generates different hydrodynamic disturbances and hence exposes the grazers differently to mechanosensory predators. Ambush feeders sink slowly and therefore perform occasional upward repositioning jumps. We quantified the fluid disturbance generated by repositioning jumps in a mm-sized copepod (Re ~ 40). The kick of the swimming legs generates a viscous vortex ring in the wake; another ring of similar intensity but opposite rotation is formed around the decelerating copepod. A simple analytical model, that of an impulsive point force, properly describes the observed flow field as a function of the momentum of the copepod, including the translation of the vortex and its spatial extension and temporal decay. We show that the time-averaged fluid signal and the consequent predation risk is much less for an ambush feeding than a cruising or hovering copepod for small individuals, while the reverse is true for individuals larger than about 1 mm. This makes inefficient ambush feeding feasible in small copepods and is consistent with the observation that ambush feeding copepods in the ocean are all small, while larger species invariably use hovering or cruising feeding strategies.

    生物产业 2011-02-28

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  • 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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