NUMERICAL ANALYSIS BASED ON HEAT TRANSFER IN THE DRYING PROCESS OF SOLID BRICKS
Palavras-chave:
Numerical simulation, solid brick, heat and mass transfer, CFDResumo
Being the ceramic a widely used material and with great economic importance, its process of drying has
been studied due to the occurrence of numerous phenomena, beyond a high energy consumption that happens in
this stage of manufacturing. The use of numerical simulation technologies can alter the operating conditions and
geometric of the drying object, all of this at low cost and relatively easy. Therefore, this job was carried out with
the purpose of studying the drying process of massive ceramic bricks, considering it a solid means by
Computational Fluid Dynamics (CFD), under the following experimental conditions: drying temperature of 60 °
C and 80 ° C, initial moisture content of 0.001734 and 0.00158 (kg / kg, bs) and relative humidity of 10.1% and
5%, respectively. The massive brick drying phenomenon was studied isolately, considering the drying model by
liquid diffusion. The results of the temperature and volumetric fraction of water inside the brick obtained by the
ANSYS CFX software package ® 19.2. Comparing the moisture and temperature simulated with experimental
data can validate the numerical results, estimating the coefficient of mass diffusion and coefficient heat transfer
from the surface of material. The results obtained in simulations show with the existence of important temperature
and humidity gradients, which areas can shed cracks and deformations.
