LASER DIAGNOSTIC TECHNIQUE FOR MEASUREMENT OF DIRECTION, SIZE VELOCITY, ACCELERATION AND REFRACTIVE INDEX OF A PARTICLE

摘要

Many industrial processes need the instrumentation for characterization of multiphase flows. However they lack in certain parameters like acceleration of particles. Present invention mentioned in this report deals with the procedure for extracting the information about particle parameters in terms of optical signals received on detectors (D1, D2, D3, D4] comprised of independent scattering orders received from a droplet (1] illuminated by Laser light beam shaped into thin sheet of 12-25 microns. Droplet gets illuminated when it moves through the optical measurement volume of beam waist [4) created by laser light sheet at the focal length created by beam shaping lenses (13]. This invention extract the information of droplet size, velocity, acceleration, direction of movement of opaque and non-opaque particles and the refractive index of non-opaque droplet particle. Single instrument is built using different optical configurations involving different methods and principles of optics to harness aforementioned information.