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Abstract:

We describe and test a simple quantitative schlieren method for measuring the slope of an unsteady free liquid surface along a straight segment. The optical system, based on an anamorphic element placed at the focal plane of a standard objective, forms a distorted image of the illuminated segment on a screen. The abscissa of the resulting bright curve is proportional to the coordinate along the segment and the ordinate to the longitudinal slope at the corresponding coordinate, provided that the transverse slope component is negligible. The method is useful to probe axisymmetric flows along a diameter or flows in straight channels along the axis.

Registro:

Documento: Artículo
Título:Measurement of the slope of an unsteady liquid surface along a line by an anamorphic schlieren system
Autor:Thomas, L.; Gratton, R.; Marino, B.; Betelú, S.; Diez, J.; Simon, J.
Filiación:Inst. de Física Arroyo Seco, Facultad de Ciencias Exactas, Univ. Nac. Ctro. Provincia Buenos A., Pinto 399, Provincia de Buenos Aires, Argentina
Laboratorio de Optica, Univ. de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Imaging techniques; Light; Liquids; Measurements; Optical instrument lenses; Standards; Surfaces; Abscissa; Anamorphic element; Anamorphic schlieren system; Axisymmetric flows; Longitudinal slope; Straight channels; Unsteady liquid surface; Schlieren systems; flow measurement; optical techniques; unsteady flow
Año:1996
Volumen:7
Número:8
Página de inicio:1134
Página de fin:1139
DOI: http://dx.doi.org/10.1088/0957-0233/7/8/008
Título revista:Measurement Science and Technology
Título revista abreviado:Meas. Sci. Technol.
ISSN:09570233
CODEN:MSTCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09570233_v7_n8_p1134_Thomas

Referencias:

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  • Thomas, L., Gratton, R., Marino, B., Simon, J., Measurements of free-surface profile in transient flow with a simple light-slicing method (1994) J. Appl. Opt., 33, pp. 2455-2458
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Citas:

---------- APA ----------
Thomas, L., Gratton, R., Marino, B., Betelú, S., Diez, J. & Simon, J. (1996) . Measurement of the slope of an unsteady liquid surface along a line by an anamorphic schlieren system. Measurement Science and Technology, 7(8), 1134-1139.
http://dx.doi.org/10.1088/0957-0233/7/8/008
---------- CHICAGO ----------
Thomas, L., Gratton, R., Marino, B., Betelú, S., Diez, J., Simon, J. "Measurement of the slope of an unsteady liquid surface along a line by an anamorphic schlieren system" . Measurement Science and Technology 7, no. 8 (1996) : 1134-1139.
http://dx.doi.org/10.1088/0957-0233/7/8/008
---------- MLA ----------
Thomas, L., Gratton, R., Marino, B., Betelú, S., Diez, J., Simon, J. "Measurement of the slope of an unsteady liquid surface along a line by an anamorphic schlieren system" . Measurement Science and Technology, vol. 7, no. 8, 1996, pp. 1134-1139.
http://dx.doi.org/10.1088/0957-0233/7/8/008
---------- VANCOUVER ----------
Thomas, L., Gratton, R., Marino, B., Betelú, S., Diez, J., Simon, J. Measurement of the slope of an unsteady liquid surface along a line by an anamorphic schlieren system. Meas. Sci. Technol. 1996;7(8):1134-1139.
http://dx.doi.org/10.1088/0957-0233/7/8/008