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Surface representations of two- and three-dimensional fluid flow topologyWe discuss our work using critical point analysis to generate representations of the vector field topology of numerical flow data sets. Critical points are located and characterized in a two-dimensional domain, which may be either a two-dimensional flow field or the tangential velocity field near a three-dimensional body. Tangent curves are then integrated out along the principal directions of certain classes of critical points. The points and curves are linked to form a skeleton representing the two-dimensional vector field topology. When generated from the tangential velocity field near a body in a three-dimensional flow, the skeleton includes the critical points and curves which provide a basis for analyzing the three-dimensional structure of the flow separation. The points along the separation curves in the skeleton are used to start tangent curve integrations to generate surfaces representing the topology of the associated flow separations.
Document ID
19930070878
Document Type
Conference Paper
Authors
Helman, James L.
(NASA Ames Research Center Moffett Field, CA, United States)
Hesselink, Lambertus
(Stanford Univ. CA, United States)
Date Acquired
August 16, 2013
Publication Date
October 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
IEEE, Conference on Visualization(San Francisco, CA)
Funding Number(s)
CONTRACT_GRANT: NSF NCS-88-15815
CONTRACT_GRANT: NAG2-489
Distribution Limits
Public
Copyright
Other
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