Temperature and flow-velocity measurements by use of laser-induced electrostrictive gratings.
Light scattering from laser-induced electrostrictive gratings has been used for simultaneous, instantaneous, nonintrusive, and remote measurements of temperature and velocity in a submerged air jet. We accomplished phase-sensitive detection of scattered light by superimposing two signal beams whose frequencies were Doppler shifted by the movement of the grating. Temperatures in the range 295-600 K and flow velocities in the range 10-100 m/s were measured.
Hemmerling
B
B
Kozlov
D N
DN
Stampanoni-Panariello
A
A