Hydroxyl Tagging Velocimetry in a Mach 2 Flow with a Wall Cavity

Autor:	Robert Pitz, Michael Lahr, Zachary Douglas, Joseph Wehrmeyer, Shengteng Hu, Campbell Carter, K.-Y. Hsu, C. Lum, M. Koochesfahani
Rok vydání:	2005
Předmět:	Yield (engineering) Materials science Excimer laser medicine.medical_treatment Flow pattern Molecular physics Physics::Fluid Dynamics symbols.namesake Planar Mach number Flow (mathematics) High pressure medicine symbols Physics::Chemical Physics Hydroxyl tagging velocimetry
Zdroj:	43rd AIAA Aerospace Sciences Meeting and Exhibit.
DOI:	10.2514/6.2005-36
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f03f4387775eb8c707e14e58e35b7d4b https://doi.org/10.2514/6.2005-36 Zobrazit plný text záznamu