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Dynamic characteristics analysis of forcing jet by Karhunen-Loeve transformation
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 Title & Authors
Dynamic characteristics analysis of forcing jet by Karhunen-Loeve transformation
Lee, Chan-Hui; Lee, Sang-Hwan;
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 Abstract
The snapshot method is introduced to approximate the coherent structures of planar forcing jet flow. The numerical simulation of flow field is simulated by discrete vortex method. With snapshot method we could treat the data efficiently and approximate coherent structures inhered in the planer jet flow. By forcing the jet at a sufficient amplitude and at a well-chosen frequency, the paring can be controlled in the region of the jet. Finally we expressed the underlying coherent structures of planar jet flow in the minimum number of modes by Karhunen-Loeve transformation in order to understand jet flow and to make the information storage and management in computers easier.
 Keywords
Turbulent Forcing Jet;Coherent Structure;Karhunen-Loeve Transformation;Discrete Vortex Method;Vortex Element;Source Element;Direct Method;Snapshot Method;Vortex Pairing;
 Language
Korean
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