a	Axial induction factor
A	Swept area of the turbine rotor
$C_p$	Power coefficient (Equation (15))
$F_a$	Aerodynamic force
$\lambda$	Tip-speed ratio (Section 1)
$\rho$	Air density
$\omega$	Angular velocity of the spinning seed
$P_{\max }$	Upper limit on turbine power due to the kinetic energy of the wind
R	The universal gas constant (8.314)
$Re$	Reynolds Number
$r_s$	The spinning seed radius
$T_c$	Air temperature (in Celcius)
$v,m$	Air speed and mass at the turbine rotor
$v_1,m_1$	Air speed and mass before the rotor
$v_2,m_2$	Air speed and mass after the rotor