Abstract
Atomization and spray is now widely used in many industrial fields. On-line measurement of the size distribution, temperature, and component concentration of the spray droplets is very important for the in-depth investigation into the mechanism and optimized control of the atomization and spraying process. Global Rainbow Refractometry (GRR) is an effective light scattering technique for the simultaneous measurement of the size distribution and refractive index of the spray droplets. In the paper, an improved reversion algorithm of GRR is proposed based on Nussenzveig theory, least square method and empirical formulas. Firstly five characteristic points are extracted from the intensity distribution of the pretreated global rainbow, and then the refractive index and diameter range of the droplets can be initially estimated. From the initially estimated values, the refractive index and diameter range of the droplets are determined by optimizing the angular deviation between the reconstructed and captured rainbows. Finally, both numerical simulations and experiments are carried out to evaluate the feasibility of the improved algorithm. The results show that the error of the inversion result of refractive index is of the order of magnitude 10−4, and the error of the mean diameter is better than 3μm.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.