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HORSKÝ, J. KVAPIL, J. KENETH, B. MORAVEC, R.
Original Title
Determination of Thermal Contact Conductance Based on Unsteady Temperature Measurement
Type
conference paper
Language
English
Original Abstract
Thermal contact conductance (TCC) is a parameter which describes heat flow Thermal contact conductance (TCC) is a parameter which describes heat flow between solid bodies in contact with different temperatures and plays an important role in a numerical simulation of heat transfer in various areas of technology. The TCC has SI units in W/m2 .K. Many empirical and semi-empirical correlations to predict TCC were published. There are three core models: elastic model (Mikic) [1], plastic model (Cooper, Mikic, Yovanovich) [2] and elastoplastic model (Sridhar, Yovanovich) [3]. These models are widely used to simulate thermal contact between bodies, eg. Comsol Multiphysics uses these three methods. But Fieberg [4] shows that these methods are only valid with contact pressure up to 7 MPa and temperature up to 500 °C. Also with recently developed numerical simulations in steelmaking and continuous casting, theoretically derived TCCs are not accurate enough and there is a need for experimentally measured values of TCC. The Heat Transfer and Fluid Flow Laboratory of Brno Technical University conducted experiments to determine TCC between two specimens by a device which allows the experimental determination of the TCC as a function of different contact pressure, temperature, surface morphology etc. The temperature history of bodies during an experiment is measured by thermocouples which are then used to estimate time dependent values of TCC by an inverse heat conduction calculation.
Keywords
thermal contact conductance, thermal contact resistance, heat transfer coefficient
Authors
HORSKÝ, J.; KVAPIL, J.; KENETH, B.; MORAVEC, R.
RIV year
2015
Released
4. 5. 2015
ISBN
978-1-935117-46-9
Book
AISTech 2015
1551-6997
Periodical
AIST Association for Iron&Steel Technology
Year of study
3
State
United States of America
Pages from
3519
Pages to
3525
Pages count
7
BibTex
@inproceedings{BUT114798, author="HORSKÝ, J. and KVAPIL, J. and KENETH, B. and MORAVEC, R.", title="Determination of Thermal Contact Conductance Based on Unsteady Temperature Measurement", booktitle="AISTech 2015", year="2015", journal="AIST Association for Iron&Steel Technology", volume="3", pages="3519--3525", isbn="978-1-935117-46-9", issn="1551-6997" }