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Artium PDI-FP 双量程可机载飞行探头
Artium PDI-FP 双量程可机载飞行探头
Artium PDI-FP 双量程可机载飞行探头
Artium PDI-FP 双量程可机载飞行探头

Artium PDI-FP 双量程可机载飞行探头

¥50万 - 100万

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PDI-FPDR

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美洲

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北京欧兰科技发展有限公司
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仪器种类： 气溶胶检测仪

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        PDI 飞行探头系特别为满足机载云层特性研究需求而设计研发，能够测量液滴直径分布，速度分布，数密度，及液态水含量。探头采用成熟可靠的相位多普勒技术来直接测量云层中每个液滴的粒径和速度。这种测量方法仅对球形颗粒敏感从而可以将非球形的冰晶颗粒剔除掉。

不仅如此，该种探头还具有将液态液滴和结冰液滴区分开来的能力。PDI飞行探头克服了老式过时的基于前向光散射原理的测量技术所面临的一些固有问题，例如景深限制，测量的不确定性，致密高粒子数密度对象的重合等。

       PDI飞行探头具有即开即用，全自动化设置的特点。该飞行探头系统可以用于在机载飞行和风洞应用环境下进行实时，非介入地测量单个独立液滴的粒径和单速度分量。

       整体包含飞行探头（包括光学发射头和接受头），ASA信号处理器，以及AIMS系统软件平台。

       探头采用最先进的半导体泵浦固体（DPSS）激光器作光源，保证了系统整体的稳定性，结构紧凑性，耐冲击碰撞特性和高可靠性。PDI－FPDR型号探头具有可选的内置加热器已防止

结冰累积。这种设计保证了探头可以用在极端结冰环境下并确保不会有任何信号损失。

       美国海军，美国陆军和美国宇航局格伦研究中心为探头的研发提供了资金支持。

相关方案

综合其他石油/化工环保航空航天
  • 结冰风洞中喷雾液滴粒径检测方案(气溶胶检测)
    采用LaVision公司的ParticleMaster-Shadow系统，以及Artium公司的PDI设备对结冰风洞云模拟中的液滴粒径分布进行了测量。测量能力拓展到过冷大液滴。

    航空航天 2019-12-04

  • 哌嗪（对二氮己环）中液滴粒径和速度分布检测方案(干涉仪)
    用美国Artium Technologies公司的相位多普勒粒子分析仪PDI，在中试规模上进行浓缩哌嗪（对二氮己环）喷雾液滴粒径和速度分布测量。

    石油/化工 2017-06-23

  • 液滴,喷雾中粒径,速度检测方案(干涉仪)
    相位多普勒干涉测量术探测区域和粒子粒径比值小于一（第一部分 轨迹误差） 最新型的DPSSL固体激光器作光源的PDI设备（也被称作PDPA和PDA），具有探测区干涉条纹对比度高。测量所得到的数据有效率更高。调试简便高效的特点。

    其他 2009-12-30

  • 喷雾,液滴,喷嘴,流体中速度矢量场检测方案(粒子图像测速)
    Pulsed jets have found a wide variety of applications in the area of flow control during the recent years. The goal of the current study is to identify the flow field and mixing characteristics associated with an incompressible circular jet through a flexible nozzle. The flow was self-excited over a range of conditions and produced a pulsatile flow. The frequency of excitation was found to be between 150-175Hz. Phase-locked and time averaged 2D Particle image Velocimetry (PIV) was used to study the dynamic characteristics of the flow. The flow field shows that two different modes could be excited depending on nozzle characteristic. The flapping mode was associated with alternate shedding of vortices. This introduces strong steering of the jet to one side or the other. Turbulence, Jet spread and entrainment characteristics were far more superior to the non-flapping or a pulsed jet. The second mode which was a non-flapping mode is associated with the formation of a counter rotating vortex pair. The turbulence associated with both these modes was convected along with the vortical structure in the flow. The jet vortices formed by the self-excited flow were not just convected by the flow, but these determined the flow field and mixing characteristics of the jet.

    其他 2008-06-21

  • 暖积云中微观液滴的粒径分布和速度检测方案(气溶胶检测)
    采用美国Artium公司的机载相位多普勒粒子干涉仪（PDI）飞行探头。测量暖积云中微小水液滴的粒径和速度，并据此得出液态水含量LWC数据。探头悬挂安装在双水獭飞机机翼下。在空中飞行状态下，对云层进行测量。

    其他 2018-12-13

  • 流体中压力检测方案(粒子图像测速)
    LaVision公司的3D3C层析粒子成像测试系统(Tomo-PIV)可以获得瞬时三维体空间流动的全场三分量速度矢量场。利用这一结果数据，通过vortex-in-cell (VIC)方法，可以求出流体压力场。

    其他 2017-09-25

  • 盘芯喷嘴质量平衡中体积有效性判定检测方案(气溶胶)
    The mass balance of orchard air-blast sprayers has historically been assessed using an array of samplers to capture airborne particles. However, these methods only provide an idea of flux with no other information which is pertinent to understand the movement of droplets and their potential to drift. While droplet analysis for agricultural sprayers has always been conducted in a laboratory setting with the use of laser devices, a new phase Doppler approach is being explored to assess droplet spectra, velocity, and flux in outdoor field conditions. Therefore it is the objective of this study to develop a methodology and the potential limitations for using a phase Doppler system while in a laboratory setting. Due to the expected variability of field conditions as well as the turbulence of orchard sprayers, a computational approach was sought to assess flux from a single scan of a conical spray plume's diameter. Using a constant scanning speed of 0.0079 m/s, a disc core (D1/DC33) hollow cone nozzle was examined at 310, 410, and 520 kPa pressure at five different heights (10, 20, 30, 40, and 50 cm). Computational flux was then compared to the actual flow rate, finding a 3.3% average error with a range of 16.9% and 4.7% illustrating a small underestimation of mass with the phase Doppler which was related to distance and droplet frequency. Further, comparisons were also assessed including pattern/symmetry, droplet spectra, velocity, and the overall number of samples. The proposed methodology indicates potential for the use of phase Doppler technology for in situ measurements of spray equipment using a conical-type spray nozzle, such as that of the orchard air-blast sprayer.

    其他 2016-09-28

  • 水洗喷嘴中液滴粒径,液滴速度,速度场,速度矢量场检测方案(干涉仪)
    Crude Unit Column Overhead – Corrosion Water is usually injected in the overhead piping to: • Help quench and scrub the overhead vapors • Dilute acids formed • Prevent any salts or acids from forming in the system

    其他 2016-09-27

  • 尾气,烟气,尿素中喷雾液滴粒径,速度检测方案(气溶胶)
    There are many industrial pollutants produced from coal fired power generation plants. Recent legislation is pushing to reduce these emissions. Greenhouse gasses as well as nitrous oxides (NOX) and sulfur dioxide (SO2) are the targeted pollutants. Governmental legislation outlined by Environmental Protection Agency (EPA) through its Maximum Achievable Control Technology (MACT) guideline is a major thrust.

    环保 2016-09-18

  • 烟气,soot,碳烟,硫化物中喷雾粒径,液滴粒径,液滴速度检测方案(气溶胶)
    Sulfur dioxide is the major environmental contaminant that contributes to smog and soot. The reduction of air pollu-tants is a worldwide goal that has become a focus for sustainable environmental development strategies. As emission standards increase, the waste gas cleaning system will be required to adapt or be upgraded. Wet FGD is character-ized as one of the most reliable and effective SO2 removal techniques, with the added benefit of low operating cost. However, implementation and maintenance is considered high. Spray towers are essential elements in the emission cleaning system. Control of the droplets throughout the tower geometry is critical to ensuring maximum reduction and minimal scaling. In order to improve the scrubber, nozzle characteristics and placement must be optimized to reduce the cost of the system implementation and mitigate risks of inadequate pollution removal. A series of large flow rate, hydraulic full and hollow cone injectors were investi-gated for this study. Computational Fluid Dynamics (CFD) simulations were used to examine a standard industrial-size wet scrubber design for injection system optimization. ANSYS Fluent solvers were used with Lagrangian particle tracking meth-od for heat and mass transfer between gas and liquid. The alkaline sorbent material and SO2 reaction was modeled to determine uniformity and efficacy of the system. Surface chemical mechanisms were used to simulate the reaction rate. Drop size, liquid rheology, and injector array layout were examined to achieve SO2 removal above 90%. Wall impingement and flow pattern results were evaluated, due to their impact in minimizing equipment corrosion and plugging.

    环保 2016-09-18

  • 云层中液态水含量,LWC,液滴速度,液滴直径检测方案(干涉仪)
    In 2011, NASA Glenn’s Icing Research Tunnel underwent a major modification to it’s refrigeration plant and heat exchanger. This paper presents the results of the subsequent full cloud calibration. Details of the calibration procedure and results are presented herein. The steps include developing a nozzle transfer map, establishing a uniform cloud, conducting a drop sizing calibration and finally a liquid water content calibration. The goal of the calibration is to develop a uniform cloud, and to build a transfer map from the inputs of air speed, spray bar atomizing air pressure and water pressure to the output of median volumetric droplet diameter and liquid water content.

    环保 2016-09-18

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