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TECHNICAL PAPERS

Recursive Identification of Thermal Convection

[+] Author and Article Information
H. M. Park, W. J. Lee

Department of Chemical Engineering, Sogang University, Seoul, Korea

J. Dyn. Sys., Meas., Control 125(1), 1-10 (Mar 10, 2003) (10 pages) doi:10.1115/1.1540116 History: Received January 01, 2001; Revised September 01, 2002; Online March 10, 2003
Copyright © 2003 by ASME
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Figures

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(a) The system and boundary conditions. Typical flow pattern and isotherms are depicted as well as the measurement locations (indicated by small circles): (b) and (c) heat flux functions q(x).
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The velocity and temperature empirical eigenfunctions: (a) the first velocity eigenfunction (λ1=0.901308), (b) the 19th velocity eigenfunction (λ19=4.20815×10−5), (c) the first temperature eigenfunction (λ1=0.800822), and (d) the 32nd temperature eigenfunction (λ32=5.64908×10−6)
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Relative errors and estimated heat flux from various methods when q(x) is given by Fig. 1b and only temperature measurements are used: (a) velocity errors, (b) temperature errors, and (c) estimated heat flux
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Relative errors and estimated heat flux from various methods when q(x) is given by Fig. 1c: (a) velocity errors, (b) temperature errors, and (c) estimated heat flux
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Relative errors when q(x) is given by Fig. 1b and velocity as well as temperature measurements are used: (a) velocity errors and (b) temperature errors
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Relative errors and estimated heat flux when q(x) is given by Fig. 1b and the temperature measurements with 5% noise are used: (a) velocity errors, (b) temperature errors, and (c) estimated heat flux

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