A TECHNIQUE TO ESTIMATE THE TRANSIENT COEFFICIENT OF HEAT TRANSFER BY CONVECTION

Authors

  • Guillermo Federico Umbricht ECyT, UNSAM/ ICI, UNGS
  • Diana Rubio ECyT, UNSAM
  • Rodolfo Echarri IDH, UNGS
  • Claudio El Hasi ICI, UNGS

DOI:

https://doi.org/10.52292/j.laar.2020.179

Keywords:

Dissipation, Convection, Elasticity, Modeling

Abstract

In this work we study the characteristics of the dissipation by convection of a solid circular section of a diameter d in a fluid. We assume that this section increases its temperature homogeneously over its whole surface from an initial temperature ð’•ð’‚ to the (asymptotic) temperature value ð’•ð’Žð’‚ð’™. To simulate its temperature behavior, we model the transfer of heat by conduction in an isolated one-dimensional bar of length L, where a constant temperature source F is considered at the left end, while keeping free the right end causing heat dissipation by convection. We propose a novel approach to estimate the heat transfer coefficient in the transient state. Numerical experiments are carry out for different materials. In order to measure the performance in the estimation, we conduct elasticity analysis. Also a comparison with data used in the literature is included.

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Published

2020-06-24

Issue

Vol. 50 No. 3 (2020): Latin American Applied Research

Section

Heat and Mass Transfer

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