Date of Award
Master of Science in Engineering
Mechanical and Aerospace Engineering
Dr. Tianshu Liu
Dr. Christopher Cho
Dr. Javier Montefort
Masters Thesis-Open Access
This research describes an experimental study on the density gradient by applying the Background Oriented Schlieren technique with the physics-based optical flow using a simple setup. The design of the BOS setup primarily consists of a background which has random dots, and a high-speed camera focused on the dots. Variation of the density between the undisturbed image and the disturbed image led to a shift of the dots, which is used to generate displacement field by using the optical flow method. In addition: different pressure conditions were applied, to provide distinct displacement fields. Finally, the density gradient of flow was visualized by BOS measurements based optical flow.
Ghazwani, Hassan A., "Preliminary Study of Optical-Flow Based Background-Oriented Schlieren Measurements" (2016). Master's Theses. 762.