Hydroxyl Tagging Velocimetry and Methods of Dynamic Image Analysis

  • Jonathan Hogan Webb School of Engineering of Vanderbilt University


This article presents the method of analyzing a mach 2 flow of air through a scramjet and over a cavity using hydroxyl tagging velocimetry (HTV). This method is of particular use in supersonic engines, where, fuel is ignited by a flame protected from airflow by a cavity. Emphasis of the experiment discussed is placed on the image analysis portion of the HTV experiments. The current software used to analyze laser intersections, created by Michigan State University, is user-intensive and inefficient because of the large number of inputs needed to produce a result. The conceptual method behind this imaging software is explained along with the mathematical algorithms related to the spatial correlation technique. The spatial correlation technique offers a way to determine the distance that an object has moved from one photograph to another. This work focuses on improvements to the dynamic analysis of images to expand the applicability of current software tools. The failures and successes of each method are explained.

Author Biography

Jonathan Hogan Webb, School of Engineering of Vanderbilt University
Jonathan Webb is a third-year student in the School of Engineering majoring in Mechanical Engineering with a minor in Mathematics. Born in Midland, Texas, Jonathan is an all-state tennis player and valedictorian of his high school. He is currently a member of Tau Beta Pi and serves as secretary of the Brothers Under Christ fraternity (BYX). Following graduation, he plans to continue his education studying business and product design.
How to Cite
WEBB, Jonathan Hogan. Hydroxyl Tagging Velocimetry and Methods of Dynamic Image Analysis. Vanderbilt Undergraduate Research Journal, [S.l.], v. 2, aug. 2006. ISSN 1555-788X. Available at: <http://ejournals.library.vanderbilt.edu/index.php/vurj/article/view/2733>. Date accessed: 22 nov. 2017. doi: https://doi.org/10.15695/vurj.v2i0.2733.
Engineering and Natural Sciences


Hydroxyl Tagging Velocimetry; Spatial Correlation Technique; Image Analysis