Laser Doppler Visualization of 2D Velocity Fields with Minimization Dependence from Multi–Particle Scattering
The method of laser Doppler visualization and measurement of 2D velocity vector field in flows with minimization of influence of a multi–particle scattering is discussed. The investigated section in the flow is illuminated with a laser sheet. Our approach is based on reception of a pair wise difference of normalized frequency–demodulated images of a laser sheet in light beams scattered in various directions. The 2D velocities field is formed from linear combinations of images of the laser sheet in frequency–demodulated light scattered in directions orthogonal to it.
Yuri Chugui, Yongsheng Gao, Kuang-Chao Fan, Roald Taymanov and Ksenia Sapozhnikova
Y. N. Dubnishchev et al., "Laser Doppler Visualization of 2D Velocity Fields with Minimization Dependence from Multi–Particle Scattering", Key Engineering Materials, Vol. 437, pp. 247-252, 2010