Abstract
The scalar-field imaging of a hypersonic mixing flow is performed in a mixing facility that is shock tunnel driven. The instantaneous mixture-fraction field of a hypersonic two-dimensional mixing layer (M 1 = 5.1, M 2 = 0.3) is determined with a temperature-insensitive planar laser-induced fluorescence technique with nitric oxide (NO) as the tracer species. Single-shot images are obtained with the broadband excitation of a reduced temperature-sensitivity transition in the A 2∑+ ← X 2Π1/2 (0, 0) band of NO near 226 nm. The instantaneous mixture-fraction field at a convective Mach number of 2.64 is shown to be nearly identical to a typical diffusive process, supporting the notion of gradient-transport mixing models for highly compressible mixing layers.
© 2003 Optical Society of America
Full Article | PDF ArticleMore Like This
Naibo Jiang, Matthew Webster, Walter R. Lempert, Joseph D. Miller, Terrence R. Meyer, Christopher B. Ivey, and Paul M. Danehy
Appl. Opt. 50(4) A20-A28 (2011)
Brian K. McMillin, Jennifer L. Palmer, and Ronald K. Hanson
Appl. Opt. 32(36) 7532-7545 (1993)
Jennifer L. Palmer and Ronald K. Hanson
Appl. Opt. 35(3) 485-499 (1996)