Fluid
The Fluid node prescribes its domains to be a fluid by adding momentum and energy transport equations.
Heat Conduction, Fluid
The default uses the Thermal conductivity k (SI unit: W/(m·K)) From material. For User defined, select Isotropic, Diagonal, Symmetric, or Anisotropic based on the characteristics of the thermal conductivity and enter another value or expression in the field or matrix.
The thermal conductivity describes the relationship between the heat flux vector q and the temperature gradient ∇T as in q = −k∇T which is Fourier’s law of heat conduction. Enter this quantity as power per length and temperature.
Thermodynamics, Fluid
The Fluid type defaults to Gas/Liquid.
By default the Density ρ (SI unit: kg/m3), Heat capacity at constant pressure Cp (SI unit: J/(kg·K)), and Ratio of specific heats γ (dimensionless) take values From material. For User defined to enter other values or expressions.
Dynamic Viscosity
The default Dynamic viscosity μ (SI unit: Pa·s) is taken From material or select User defined.