-- Physical Property for Air.

rho_g,    CONST,  1.205
mu_g,     CONST, 1.822e-5
specht_g, CONST, 1000.0
thc_g,    CONST,  0.026
diff,     CONST,  0.0
molar_mass, 28.97
lhv, 99693.0, --- value for nitrogen
sigma,    CONST,   0.07, -- water
