journal article·2025-02-27Open access

Heat Transfer in Granular Material: Experimental Measurements and Parameters Identification of Macroscopic Heat Conduction Model

Mariusz Ciesielski, Grzegorz Grodzki

Applied Sciences· Volume 15· Issue 5

Abstract

The paper presents experimental results regarding heat transfer in granular materials in the cylindrical domain during heating by the outer surface of the container. Sensors (K-type thermocouples) were used to measure the temperature changes at several points inside granular material (the fine-grained table salt was used in the experiment). Knowledge of measurement data allows the verification of a mathematical model (based on Fourier’s law) to describe the macroscopic heat conduction in granular materials. An iterative algorithm for the inverse heat conduction problem consisting of the estimation of the thermal diffusivity coefficient of granular material, the parameters of initial boundary conditions and the position of the thermocouple tips during the experiment was developed. Several computational simulations were performed. Based on the experimental results and the computational simulation results, one can conclude that the analytical solution of the direct heat conduction problem calculated for the optimal values obtained from the inverse heat conduction problem gave us the confirmation of the validity of Fourier’s model.
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Research context

OpenAlex topics: Granular flow and fluidized beds · Heat and Mass Transfer in Porous Media · Heat Transfer and Optimization

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Computer Science, Czestochowa University of Technology, Dabrowskiego 73, 42-200 Czestochowa, Poland

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