Method and device for estimating the spatial components of the speed of a fluid generated by acoustic waves, the method of estimation of the acoustic pressure of a fluid in movement, and the computer program

摘要

The present invention relates to a method of estimation of the spatial components of the speed of a fluid generated by the acoustic waves, which comprises the following steps: - seeding (40) of the fluid by the particles are able to diffuse the light beams; - measurement (42) of at least a reference correlated with the acoustic waves; - for each direction of a mark, - emission (44) of light beams by a source and the reception of the light beams emitted by the particles; - measurement (44) of a speed signal of the particles in a predefined volume, by laser doppler velocimetry with fringes, from said light beams broadcast; - calculation (58) of the correlation between the speed signal measured and the reference signal measured; and - estimation (60) of the spatial component of the speed of the fluid is generated by the acoustic waves, from said correlation.