High-speed flow visualization of fluid instabilities

Paul Rightley; Robert F. Benjamin

doi:10.1117/12.273425

28 May 1997 High-speed flow visualization of fluid instabilities

Paul Rightley, Robert F. Benjamin

Proceedings Volume 2869, 22nd International Congress on High-Speed Photography and Photonics; (1997) https://doi.org/10.1117/12.273425
Event: 22nd International Congress on High-Speed Photography and Photonics, 1996, Santa Fe, NM, United States

Abstract

The fluid instability resulting from the impulsive acceleration a thin, heavy gas layer embedded in a lighter gas is characterized through high-speed flow visualization. The shock-accelerated event occurs over the course of 1 ms. A laser sheet illuminates a plane of the gas layer and its evolution is recorded by a camera observing high-angle scattered light. Two sets of diagnostics were evaluated. These derived their time resolution either from gating the camera or pulsing the illumination source. The arbitrary inter-exposure timing associated with the gated camera was found to be significantly advantageous over the fixed intervals of the pulsed laser. The intensified, gated camera also placed more manageable requirements on the light source and provided sufficient data to measure the instability growth rates. However, the pulsed laser arrangement produced superior spatial resolution and dynamic range primarily due to the lack of an intensifier.

Citation Download Citation

Paul Rightley and Robert F. Benjamin "High-speed flow visualization of fluid instabilities", Proc. SPIE 2869, 22nd International Congress on High-Speed Photography and Photonics, (28 May 1997); https://doi.org/10.1117/12.273425

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available