Imaging Techniques and Analysis for Compressible Flows

ABSTRACT

A well-known adage says "a picture is worth a thousand words." This is true in science as well, and optical diagnostics, especially those that produce images, have become more important and useful in recent years as camera technology has improved. This talk will provide a survey of a few imaging techniques and processing methods currently in use in our lab at CWRU for a variety of applications, primarily in compressible flows. Techniques such as optical flow velocimetry, self-aligned focusing schlieren, background-oriented schlieren, dynamic mode decomposition, wavelet-filtered POD, and others will be discussed with accompanying examples on flows ranging from turbulent wakes to aerosol-laden plumes in hospital operating rooms to shock-shock interactions to high-speed water entry.