Work

2D index field measurement with a pyramidal sensor

Year: 2018

Type: conference-paper

Abstract: This paper presents a four channel schlieren sensor called pyramidal wavefront sensor (PWS) able to estimate the flow field index from phase gradient data. The resolution of the instrument is directly given by the pupil sampling path. The new sensor has been implemented on the SONIQUE wind tunnel for preliminary experimental tests. The demonstration has been realized by analyzing the wake flow around a circular cylinder. A very good agreement is obtained with the phase measured with digital holography method, thus validating the data integration process and showing that PWS is an interesting alternative to optical methods dedicated to flow characterization.

Source: HAL

DOI: 10.3929/ethz-b-000279203

Authors: Sorrente, Beatrice, Fleury, B., Conan, J.M.

Institutions: Université Paris-Saclay, Office National d'Études et de Recherches Aérospatiales, Département Optique et Techniques Associées

Language: English

Topic: Optical measurement and interference techniques

Subfield: Computer Vision and Pattern Recognition

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4299702030

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