Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
TsAGI Science Journal

ISSN Druckformat: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2016016389
pages 769-782

EFFECTS OF TRANSITION PROCESSES ON SYSTEMATIC ERRORS OF HEAT MEASURING IN WIND TUNNELS

Evgeniy Pavlovich Stolyarov
Central Aerohydrodynamic Institute (TsAGI), 1 Zhukovsky Str., Zhukovsky, 140180, Moscow Region, Russia

ABSTRAKT

A procedure to estimate the heat flux density is presented based on results of temperature measurements using an elementary thin-film sensor. It is shown that the heat flux density cannot be measured but can be determined by means of convolution of the corresponding impulse transfer function with the time derivative from the temperature measured inside the sensor. Well-behaved analytic expressions of the impulse transfer functions are obtained using the inverse Laplace transformation of the inverse heat transfer problem, and a numerical solution method for short time periods is presented, with a provision for transition processes. Systematic errors are estimated, which depend on the main similarity parameters and the number of experiments.


Articles with similar content:

ASYMPTOTIC EVALUATIONS OF HEAT-EXCHANGE CHARACTERISTICS USING THIN-FILM TEMPERATURE SENSORS
TsAGI Science Journal, Vol.48, 2017, issue 7
Evgeniy Pavlovich Stolyarov
Convolution-Type Equation of Inverse Refraction Problem
Telecommunications and Radio Engineering, Vol.59, 2003, issue 1&2
M. V. Belobrova, G. A. Alexeev
Calibration of Thin-Wire Platinum Bolometers for Pulsed Laser Power Measurements
Telecommunications and Radio Engineering, Vol.58, 2002, issue 11&12
V. M. Kuzmichov, S. V. Pogorelov
ONE-DIMENSIONAL APPROXIMATE ANALYTICAL SOLUTIONS OF HEAT CONDUCTION IN SEMI-INFINITE SOLIDS WITH TEMPERATURE-DEPENDENT PROPERTIES
Hybrid Methods in Engineering, Vol.3, 2001, issue 4
Gaetano Barbaro, Nicola Bianco, Oronzio Manca
Robust Stabilization and Evaluation of the Performance Index of Nonlinear Discrete Control Systems
Journal of Automation and Information Sciences, Vol.45, 2013, issue 5
Alexey G. Mazko , Lyudmila V. Bogdanovich