Spray angle tracking based on active contour method

Active contour model (ACM) was developed to track spray angle of atomizer. Through debugging and testing, ACM successfully captured the boundary of atomizer spray. The feature of spray contraction at downstream part of spray was also obtained, and spray angle was got exactly. The verification results show that, the relative errors between the spray angle values measured by the ACM tracking and the shadowgraph measurement are less than 1. 5%. The ACM tracking spray angle can reduce cost of engineering applications with an identical measuring accuracy.