Transient Pressure-Sensitive-Paint Investigation in a Nozzle

Autor:	D. Coponet, M.-C. Merienne, J.-M. Luyssen
Rok vydání:	2012
Předmět:	Stagnation temperature Materials science Acoustics Condensation Nozzle Aerospace Engineering Pressure-sensitive paint engineering.material law.invention Pressure measurement Optical path Coating law engineering Pressure gradient
Zdroj:	AIAA Journal. 50:1453-1461
ISSN:	1533-385X 0001-1452
DOI:	10.2514/1.j050926
Popis:	This paper presents an application of the pressure-sensitive-paint technique under unsteady flow conditions. Anodized-aluminum pressure-sensitive-paint coating was used to investigate the flowfield inside a nozzle during the transient phase and to assess the pressure gradient at the outlet region during the steady-state phase. The anodization procedure was adjusted to apply anodized-aluminum pressure-sensitive-paint coating on a large three-dimensional model. The images were acquired using a fast-frame-rate camera up to 5000 images per second, which allows accurate imaging of the paint, for which the response time is below 200 ms. Discrepancies between pressuresensitive-paint results and pressure measurements obtained with Kulite sensors are due to a temperature effect and to condensation of the exhaust air, which modifies the optical path between the observed surface and the camera.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9a6b66ad984fa234355fa4872428e41 https://doi.org/10.2514/1.j050926 Zobrazit plný text záznamu