Modeling the flow of a thermal agent through a coffee production waste layer

The paper discusses the results of computer simulations of the hydrodynamics involved in the movement of a thermal agent through a stationary layer of dried coffee production waste. Before the simulation, the parameters of the porous zone were established, including the porosity of the material layer under study (=0.4 m3/m3) and the values of the viscous resistance coefficient (1/) as well as the inertial resistance coefficient (C2). The ANSYS Fluent 2022 R2 software package was used for computer modeling, with the k- SST model of turbulence. The research involved analyzing the height range of the dried coffee production waste layer, specifically within the range of H=80 to 120 mm with a 10 mm increment, and H=90 to 110 mm with a 5 mm increment, as well as different flow rates of the thermal agent in the range of w0=0.791.75 m/s. The average relative errors of modeling the hydraulic resistance of the material layer under study in comparison with experimental values are as follows: 8.92% for the height range of H=80 to 120 mm with a 10 mm increment, and 4.28% for the range of H=90 to 110 mm with a 5 mm increment.