激光探测尾流微气泡的偏振特性研究

In order to study the scattering intensity and polarization characteristics of the bubble curtain illuminated by laser in the wake, a Monte Carlo model based on the propagation of polarized light was used. A simulation of the 3D distribution pattern of water with a group of bubbles incident on it by a polarized laser beam was presented. The scattering intensity and polarization state of bubbles and bubble groups at different bubble scales and different scattering angles were studied, and the influence of bubble number density and thickness on scattering intensity and polarization state was analyzed. The results show that the intensity and polarization of the scattered light are sensitive to the bubble size and the scattering angle. The larger the bubble size is, the more the scattering intensity and polarization tend to be concentrated in the small angle scattering in the transmission direction. With the increase of the number density and thickness of the bubble curtain, the sensitivity of the intensity of the scattered light decreases with the change of the scattering angle, and the depolarization effect increases.