Accession Number:

ADA464095

Title:

Hydroxyl Tagging Velocimetry in a Mach 2 Flow With a Wall Cavity (Postprint)

Descriptive Note:

Conference paper

Corporate Author:

VANDERBILT UNIV NASHVILLE TN DEPT OF MECHANICAL AND MATERIALS ENGINEERING

Report Date:

2005-01-01

Pagination or Media Count:

15.0

Abstract:

Hydroxyl tagging velocimetry HTV measurements of velocity were made in a Mach 2 flow with a wall cavity. In the HTV method, ArF excimer laser 193 nm beams pass through a humid gas and dissociate H2O into H OH to form a tagging grid of OH molecules. In this study, a 7x7 grid of hydroxyl OH molecules is tracked by planar laser-induced fluorescence. The grid motion over a fixed time delay yields about 50 velocity vectors of the two-dimensional flow. Instantaneous, single-shot measurements of two-dimensional flow patterns were made in the non-reacting Mach 2 flow with a wall cavity under low and high pressure conditions. The single-shot profiles were analyzed to yield mean and rms velocity profiles in the Mach 2 non-reacting flow.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE