Advanced computational modelling for drying processes – A review

Abstract

Highlights: Understanding product dehydration is a key aspect in drying technology  Advanced modelling thereof plays an increasingly important role for developing next-generation drying technology

Enhancement of energy efficiency in a paint curing oven via CFD approach: Case study in an air-conditioning plant

“…There are several papers which the CFD has been used to perform thermal behavior of a drying [4,5], an aluminum holding furnace [6], a heating oven [7,8], a chain-hardening furnace [9], a rubber-smoking room [10,11] and a bread-baking oven [12][13][14]. The increase in energy cost causes to need more efficiency for the industrial thermal process at present.…”

Coupling compositional liquid gas Darcy and free gas flows at porous and free-flow domains interface

“…It is motivated by the large longitudinal 70 dimension of the ventilation galleries compared with their diameter allowing to reduce the model in the gallery to a 1D free flow. In the spirit of Convective Mass Transfer Coefficients CMTCs (see the review [11] and the references therein for a discussion about CMTCs), the model includes on the free-flow side a Two Point Flux Approximation (TPFA) of the diffusion fluxes for the gas molar fractions at the interface. In [6], the practical computation of the TPFA transmis-75 sibility at the interface is not discussed and just said to be related to the convection-diffusion boundary layer thickness in the free-flow domain.…”

“…35 The main objective of this article is to design an efficient algorithm to solve this coupled problem. Sequential algorithms based on Dirichlet-Neumann boundary conditions at the interface (see [12,10] and the review [11]) are frequently used for solving drying problems. As mentioned in [12,10], the stability of sequential algorithms requires very small time steps at the scale of the free flow leading to very large CPU times.…”

Thermodynamic characterization of single-stage spray dryers: Mass and energy balances for milk drying

“…dairy industry ensures the better control of the dairy powder technology. [16,17] In this paper, we present a mathematical basis for construction of the mass and energy balance for the milk drying process using single-stage spray dryer equipment. It aims to create a protocol that will work as a support for industries that plan to evaluate the production efficiency of their spray dryers.…”