|
SR27 Transferência de Calor e Massa |
|
Title:
|
ESTIMATION OF THERMAL CONDUCTIVITY AND VOLUMETRIC HEAT CAPACITY IN TRANSIENT EXPERIMENTS
|
|
Summary :
|
ABSTRACT. THIS PAPER DEALS WITH THE DEVELOPMENT OF AN EXPERIMENTAL SETUP FOR THE ESTIMATION OF THE THERMAL CONDUCTIVITY AND OF THE VOLUMETRIC HEAT CAPACITY OF SOLIDS. IT CONSISTS OF A HEATER SYMMETRICALLY ASSEMBLED BETWEEN TWO PIECES OF THE SPECIMEN WITH UNKNOWN PROPERTIES. TRANSIENT SIMULATED TEMPERATURE MEASUREMENTS TAKEN IN THE SPECIMEN ARE USED IN THE ESTIMATION PROCEDURE BASED ON THE LEVENBERG-MARQUARDT METHOD OF MINIMIZATION OF THE LEAST-SQUARES NORM. AN ANALYSIS OF THE SENSITIVITY COEFFICIENTS AND THE USE OF A D-OPTIMUM CRITERION PERMIT THE OPTIMUM DESIGN OF THE EXPERIMENT.
KEYWORDS: THERMAL CONDUCTIVITY, VOLUMETRIC HEAT CAPACITY, PARAMETER ESTIMATION, LEVENBERG-MARQUARDT
|
|
Author :
|
Oliveira, Alexandre P.
Orlande, Helcio R.B.
Silva, Daniela V.F.M.R.
Souza, Roberto
|
|
Paper View :
|
|