Short-time proper orthogonal decomposition of time-resolved schlieren images for transient jet screech characterization

• Main Authors: Lim, Desmond Haoxiang, Wei, Xiaofeng, Zang, Bin, Vevek, U. S., Mariani, Raffaello, New, Tze How, Cui, Y. D.
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2022
• Subjects: Engineering::Mechanical engineering; Flow Diagnostics; Schlieren
• Online Access: https://hdl.handle.net/10356/160904
• Institution: Nanyang Technological University

Short-time Proper Orthogonal Decomposition (POD) is proposed as an image-based technique to study the transient jet screech characteristics of moderately under-expanded supersonic jets emanating from a circular baseline and two bevelled nozzles. Time-resolved schlieren imaging of turbulent flow stru...