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Simultaneous velocity and temperature measurements in gaseous flow fields using the VENOM technique

机译:使用VENOM技术同时测量气流场中的速度和温度

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We present an initial demonstration of simultaneous velocity and temperature mapping in gaseous flow fields using a new nitric oxide planar laser-induced fluorescence-based method. The vibrationally excited NO monitoring (VENOM) technique is an extension of two-component velocimetry using vibrationally excited NO generated from the photodissociation of seeded NO_(2) [Appl. Opt. 48, 4414 (2009)], where the two sequential fluorescence images are obtained probing two different rotational states to provide both velocity and temperature maps. Comparisons to computational fluid dynamics simulations show that the initial VENOM measurements provide good velocity and temperature maps in the relatively high-density regions of the flow, where the rms uncertainties are approximately 5percent for velocity and 9percent for temperature.
机译:我们提出了使用新的一氧化氮平面激光诱导的基于荧光的方法在气体流场中同时进行速度和温度映射的初步演示。振动激发NO监测(VENOM)技术是两组分测速技术的扩展,它使用了由种子NO_(2)的光解离产生的振动激发NO。选择。 48,4414(2009)],其中通过探测两个不同的旋转状态获得两个连续的荧光图像,以提供速度和温度图。与计算流体动力学模拟的比较表明,初始VENOM测量值在相对较高密度的流动区域中提供了良好的速度和温度图,其中均方根不确定性大约为速度的5%,温度的不确定度为9%。

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