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
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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
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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
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Volumen: | 7
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Número: | 8
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Página de inicio: | 1134
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Página de fin: | 1139
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DOI: |
http://dx.doi.org/10.1088/0957-0233/7/8/008 |
Título revista: | Measurement Science and Technology
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Título revista abreviado: | Meas. Sci. Technol.
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ISSN: | 09570233
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CODEN: | MSTCE
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09570233_v7_n8_p1134_Thomas |
Referencias:
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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