Computational and experimental analysis of high temperature thermal treatment of wood based on ThermoWood technology

Some investigations on moisture injection, moisture diffusivity and thermal conductivity using a three-dimensional computation of wood heat treatment at high temperature

“…They predominate over turbulence effects, due to the small value of local Reynolds number of turbulence. In consequence, the classical wall function method [24,33,43] was used for fluid in this region to bridge the near-solid-wall region in the case of standard k-ε model. The integration of k and ε equations from the fully turbulent region to the wall led to the following equation for the wall shear stress:…”

“…These predominant mechanisms depend not only on the internal physical properties and hygroscopic nature of wood; but also on external conditions of temperature, fluid humidity and flow, and the way that heat is supplied during the treatment [22,23]. Some authors have numerically considered the problem of thermal treatment of wood at high temperature as a conjugate simultaneous heat and mass transfer through porous medium [7,[24][25][26]. The theory of transport phenomena in porous materials can be found in several investigations [27][28][29][30][31].…”

Numerical Simulation of the Incompressible Turbulent Flow of a Binary Mixture of Air-Water Vapor: Applications in Drying Process

“…Younsi et al (2010) adopted the commercial software ANSYS-CFX to solve numerically the turbulent flow of a binary mixture in a wood dry kiln. The authors compared the numerical results with experimental data aiming at validating the simulation.…”

Conjugated Heat and Mass Transfer in Convective Drying in Compact Wood Kilns: A System Approach

“…In a similar direction, Mohan and Talukdar [2] present a 3D computational model to study the convective drying of a moist object. More recently, two works assessing convective drying of wood have been reported in the literature [7,8]. Younsi et al [7] utilise a 3D model to compute the turbulent flow inside convective kilns and evolution of the temperature and moisture content.…”

“…More recently, two works assessing convective drying of wood have been reported in the literature [7,8]. Younsi et al [7] utilise a 3D model to compute the turbulent flow inside convective kilns and evolution of the temperature and moisture content. Thibeault et al [8] combine the Ansys CFX (heat and moisture transfer) and FESh++ (mechanical approximation) commercial codes to predict the thermo-hygro-mechanical behaviour of wood during convective drying.…”