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David Knight, Gordon Mallinson, "Visualizing Unstructured Flow Data Using Dual Stream Functions," IEEE Transactions on Visualization and Computer Graphics, vol. 2, no. 4, pp. 355363, December, 1996.  
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@article{ 10.1109/2945.556503, author = {David Knight and Gordon Mallinson}, title = {Visualizing Unstructured Flow Data Using Dual Stream Functions}, journal ={IEEE Transactions on Visualization and Computer Graphics}, volume = {2}, number = {4}, issn = {10772626}, year = {1996}, pages = {355363}, doi = {http://doi.ieeecomputersociety.org/10.1109/2945.556503}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, }  
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TY  JOUR JO  IEEE Transactions on Visualization and Computer Graphics TI  Visualizing Unstructured Flow Data Using Dual Stream Functions IS  4 SN  10772626 SP355 EP363 EPD  355363 A1  David Knight, A1  Gordon Mallinson, PY  1996 VL  2 JA  IEEE Transactions on Visualization and Computer Graphics ER   
Abstract—One of the most important ways of visualizing fluid flow is the construction of streamlines, which are lines that are everywhere tangential to the local fluid velocity. Stream surfaces are defined as surfaces through which no fluid penetrates. Streamlines can therefore be computed from the intersection of two nonparallel stream surfaces. This paper presents new algorithms for the computation of dual stream functions from Computational Fluid Dynamics data that is defined on an unstructured tetrahedral mesh. These algorithms are compared with standard numerical routines for computing streamlines, and are shown to be quicker and more accurate than techniques involving numerical integration along the streamline.
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