Process for the measurement simultaneous of three components of the speed by the methods of anemometry laser by the doppler effect

摘要

The method makes it possible, by using methods of anemometry laser by the doppler effect, to measure simultaneously the three components of the speed of a medium in 2002. For this purpose, a laser is argon ions 2 serves as a source of application for a conventional system for measuring two components 5, which, by means of the line has 488nm blue and green line has 515nm generates two arrays of fringes of interference in the measuring volume 6. These two arrays of fringes of interference are oriented in the manner to form a large angle relative to each other. / p & & p & the same laser ions of argon is also used as a pumping source for the laser, a colorant 10 which emet in the vicinity of the wavelength of 600nm. This radiation is used to generate a third network of fringes of interference which is also a large angle with respect to the other two. / p & & p & the separation of the signals of application to diffuse from the measuring volume 6 is made in the usual manner on the three colors, by means of filters interferential or colores.