2012/04/06 13:38
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产品配置单:
丹迪显微粒子图像测速仪 Dantec MicroPIV
型号: MicroPIV
产地: 丹麦
品牌: 丹迪
¥80万 - 100万
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水生生物触须后的流场研究
Stereo-μPIV measurements have been performed to investigate the wake behind a vibrissa (facial hair) from a seal. Previous experiments have proven the capability of seals to detect the wake swimming fish by using only their vibrissae as a sensory system. Also it can be observed that the vibrissae of seals exhibit a unique 3D shaped structure. The aim of the present investigation is, to learn the fluid mechanic aspects of the wake detection and to understand the influence of the 3D surface structure on the detection capabilities. The measurements have made extensive use of a Stereo-μPIV device,which allows the capturing of the full un-steady 3D vector field on a set of 2D planes with microscopic length scales.
2012/04/25
围绕窄圆柱的低雷诺数流体的三维影响
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气流中测量局部构成的二维激光诱导等离子谱的应用
In the present investigation, Laser Induced Plasma Spectroscopy (LIPS) is performed with an original two dimensional approach. The spectrometer usually used to record light emission from plasma and compare well-chosen peak intensity is here replaced by two intensified cameras equipped with band pass filters. The ratio of emission intensities recorded with the two cameras at two different wavelengths provides the concentration of identified species in given mixtures. This technique gives information on mixture composition on the whole plasma volume increasing both the spatial resolution and the probe volume of the measurement. Tests are performed on coaxial jets of air and nitrogen showing the ability of the method to catch the mixing layer developed at the nozzle exit.
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