Three-dimensional schlieren measurements using inverse tomography

by: S Décamp, C Kozack, B Sutherland

Experiments in Fluids, Vol. 44, No. 5. (10 May 2008), pp. 747-758.

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Abstract

Abstract The “synthetic schlieren” method has been used to measure the amplitude of internal waves that are two-dimensional and axisymmetric. Here it is adapted to reconstruct fully three-dimensional perturbations. This non-intrusive technique, which uses inverse tomography methods, shows accurate results when a sufficient number of perspectives taken from the same experiment are provided to the inversion code. We demonstrate the effectiveness of the wavefield reconstruction from three idealized disturbances in the form of a Gaussian function, a Gaussian multiplied in amplitude by a sine function and a sinusoidal plane wave with an elliptical envelope. The consequences of noisy data input are also investigated.

@article{citeulike:2649374, abstract = {Abstract\ \ The “synthetic schlieren” method has been used to measure the amplitude of internal waves that are two-dimensional and axisymmetric. Here it is adapted to reconstruct fully three-dimensional perturbations. This non-intrusive technique, which uses inverse tomography methods, shows accurate results when a sufficient number of perspectives taken from the same experiment are provided to the inversion code. We demonstrate the effectiveness of the wavefield reconstruction from three idealized disturbances in the form of a Gaussian function, a Gaussian multiplied in amplitude by a sine function and a sinusoidal plane wave with an elliptical envelope. The consequences of noisy data input are also investigated.}, author = {D\'{e}camp, S. and Kozack, C. and Sutherland, B. }, citeulike-article-id = {2649374}, doi = {10.1007/s00348-007-0431-y}, journal = {Experiments in Fluids}, keywords = {tomography}, month = {May}, number = {5}, pages = {747--758}, posted-at = {2008-04-10 15:13:55}, priority = {3}, title = {Three-dimensional schlieren measurements using inverse tomography}, url = {http://dx.doi.org/10.1007/s00348-007-0431-y}, volume = {44}, year = {2008} }

RIS record

TY - JOUR ID - citeulike:2649374 L3 - citeulike-article-id:2649374 TI - Three-dimensional schlieren measurements using inverse tomography JF - Experiments in Fluids VL - 44 IS - 5 SP - 747 EP - 758 N2 - Abstract  The “synthetic schlieren” method has been used to measure the amplitude of internal waves that are two-dimensional and axisymmetric. Here it is adapted to reconstruct fully three-dimensional perturbations. This non-intrusive technique, which uses inverse tomography methods, shows accurate results when a sufficient number of perspectives taken from the same experiment are provided to the inversion code. We demonstrate the effectiveness of the wavefield reconstruction from three idealized disturbances in the form of a Gaussian function, a Gaussian multiplied in amplitude by a sine function and a sinusoidal plane wave with an elliptical envelope. The consequences of noisy data input are also investigated. KW - tomography AU - Décamp, S AU - Kozack, C AU - Sutherland, B PY - 2008/05/10/ UR - http://dx.doi.org/10.1007/s00348-007-0431-y ER -

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