Simultaneous Recording of Shadowgrams and Schlieren Images for the Study of Plasma Assisted Aerodynamics
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Data
2009-01-01
Autores
Machado, Jose Marcio [UNESP]
Yang, Shiyou
Abe, Nancy-Mieko
Passaro, Angelo
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Japan Society Applied Electromagnetics & Mechanics
Resumo
This work describes an optical device for the simultaneous recording of shadowgrams and schlieren images, and some results are presented concerning its application to the study of plasma assisted flow control in airfoil models. This approach offers many advantages in comparison to other methods, specially because the use of tracer particles (like smoke in wind tunnels) is not required for the experiments, thus avoiding contaminations in the electric discharges or air flows. Besides, while schlieren images reveal the refractive index gradients in the area of study, shadowgrams detect the second order spatial derivatives of the refractive indexes. Therefore, the simultaneous recording of these different images may give interesting information about the phenomena under study.
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Applied Electromagnetics and Mechanics (ii). Tokyo 110: Japan Society Applied Electromagnetics & Mechanics, v. 13, p. 73-74, 2009.