rho0 1000[kg/m^3] "Fluid density"
mu0 0.001[Pa*s] "Fluid viscosity"
alphap 1e-6[1/K] "Fluid volumetric thermal expansion"
k0 6[W/(m*K)] "Fluid thermal conductivity"
gamma 1 "Fluid ratio of specific heat"
Cp0 4200[J/(kg*K)] "Fluid heat capacity at constant pressure"
epsilon 0.4 Porosity
kappa 1e-3[m^2] Permeability
p0 1[atm] "Reference pressure"
Tc 20[degC] "Reference temperature"
Th 42[degC] "High temperature"
L 0.1[m] "Length scale"
Pr mu0*Cp0/k0 "Prandtl number"
Ra Cp0*rho0^2*g_const*alphap*(Th-Tc)*L^3/(k0*mu0) "Rayleigh number"