Science and Education Publishing American Journal of Mechanical Engineering 1 7 2013 11 18 The Investigation of the Industrial Spray Systems Using Interferometry Particle Imaging Method 384 389 EN D. Jasikova Institute for Nanomaterials, Advanced Technologies and Innovation, Technical university of Liberec, Studentska 2, Liberec, Czech Republic M. Kotek V. Kopecky AJME20131746 10.12691/ajme-1-7-46 2013 10 10 2013 10 17 2013 11 18 The spray analysis, the knowledge of stray distribution, geometry and structures is a fundamental for many industrial applications. Here we present the optical method for non-contact spray investigation based on the principle of light interference. The advantages of this method are demonstrated on three examples from industrial application, each examining the two phase flow systems in various scales of particle diameters and impacting velocities. Demonstrated here are results analyzing EHDA atomizer, pneumatic nozzle and disintegration of the liquid behind the blade profile.