三维LDV/APV系统测量大尺度雾场的硬件布局参数及应用

The Hardware Lay-out Parameters to Measure the Large Scale Spray Field by the 3D LDV/APV System and Its Application

通过不导电球形粒子的光散射理论，对三维ＬＤＶ／ＡＰＶ系统的硬件布局参数进行了探讨，选择了合适的粒径测量灵敏度及动态范围，可以有效测量三维大尺度雾场内液滴粒径分布、速度分布以及体积通量等重要特性参数，从而避免了短焦距发射探头和接收器不便有效测量三维大尺度雾场的缺点．该布局参数的可行性在实验中得到验证。

,On the basis of the light scattering theory of inconductive spherical particles,the hardware layout parameters of a 3D LDV/APV system are studied,and the suitable sensitivity and dynamic range of the drop diameter measurement are chosen. It is iffective for measuring such important characteristic parameters as the distribution of drop diameters and velocity distribution and the spray volume flux in the large scale three dimensional spray field, thus avoiding the deficiency of measuring the large scale spray field by the transmitting probes and receivers with short focal lengths.The validity of the layout parameters is proved in the experiments, which provides a basis for further applications.