The environment is set as Air 20 ̊С for all simulations by default, and is located in the Standard folder of the database. The standard environment can be edited by saving it in the database section Project file or My Database.
Section Standard of the database contains a list of environments most commonly used for heat treatment: brines, molten salts, oils, water. The environment database window is shown in the figure below:
Environment parameters are as follows:
Environment temperature – can be set by a constant value or a table function (dependence on the process time).
Heat transfer from the workpiece surface into the environment is performed due to radiation and convection. Thus, the surface heat flow density q consists of two components: q1(radiation) and q2(convection):
where A – emissivity, σ = 5.67·10-8(W/m2·К4) – Stefan-Boltzman constant, Tobj– object surface temperature, Tenv – environmental temperature.
where h – heat transfer coefficien (W/m2·К), Tobj – object surface temperature, Tenv – environmental temperature.
Emissivity – can be specified by a constant value or a table function (dependence on the surface temperature of the object or on the process time).
Heat transfer coefficient – can be specified as a constant value or a table function (dependence on the surface temperature of the object or on the process time).
Mass transfer coefficient – is used for simulation diffusion saturation processes.
Concentration – selection of a diffusing element and setting its concentration for simulation diffusion saturation processes.
See also: