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SR13 Mecânica dos Fluidos |
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Title:
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PREDICTING THE BEHAVIOR OF THE WAKE OF A RECTANGULAR CYLINDER FROM EXPERIMENTAL CHAOTIC TIME SERIES
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Summary :
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ALTHOUGH RECONSTRUCTION AND PREDICTION OF TIME SERIES HAVE BEEN STUDIED FOR A NUMBER OF THEORETICAL NONLINEAR SYSTEMS, THE LITERATURE LACKS RESULTS FOR REAL-LIFE SITUATIONS. IN THIS WORK, WE HAVE EMBEDDED SOME EXPERIMENTAL TIME SERIES, OBTAINED FROM THE WAKE OF THE FLOW PAST A RECTANGULAR CYLINDER, INTO A STATE SPACE EMPLOYING DELAY COORDINATES. AFTER PERFORMING NOISE REDUCTION, BY MEANS OF SINGULAR VALUE DECOMPOSITION, WE HAVE GENERATED THE INDUCED NONLINEAR MAPPING USING A LOCAL APPROXIMATION, THEREFORE ALLOWING FOR SHORT-TERM PREDICTIONS OF THE FUTURE BEHAVIOR OF THE SYSTEM, WITH INFORMATION BASED ONLY ON PAST VALUES. IN ADDITION, AN ERROR ESTIMATE FOR THIS PROBLEM HAS BEEN INCLUDED. |
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Author :
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Cambraia, Heraldo Nélio
Dias-Jr, Tito 0
Lindquist, Cláudio 0
Woiski, Emanuel Rocha
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Paper View :
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