Speckle tomography of a gas flame

Autor:	D. E. Vitkin, N. A. Fomin, G. N. Blinkov, N. L. Yadrevskaya, R. I. Soloukhin, M. N. Rolin
Rok vydání:	1989
Předmět:	Fluid Flow and Transfer Processes Materials science Observational error business.industry Photography Computational Mechanics Phase (waves) Physics::Optics General Physics and Astronomy Speckle noise Speckle pattern Optics Mechanics of Materials Fluid dynamics Tomography business Refractive index
Zdroj:	Experiments in Fluids. 8:72-76
ISSN:	1432-1114 0723-4864
DOI:	10.1007/bf00203067
Popis:	The present work is concerned with an experimental setup for studying phase objects using multi-directional speckle photography. A mathematical description of light propagation in an optically inhomogeneous medium and a means of speckle tomography of refractive coefficient distributions are given. Recommendations on two-dimensional refractive coefficient and temperature distributions in a flame of a candle illuminated in four directions are made. The obtained results evidence that speckle photography may be a basis for tomographic studies of temperature fields in different cross-sections of an object. A speckle shift error is about 5% while the one in reconstructing local temperatures does not exceed 10%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::12fd2a21e3cd9d3242e2c5983dc452a7 https://doi.org/10.1007/bf00203067 Zobrazit plný text záznamu Full text from SpringerLink