ed for iteratively.
</p>
<p>
    If the valve is closed completely (<i>VlvPos = 0</i>), the valve throat
    flow and the throat Mach number are set to be zero. Otherwise, these parameters
    are determined according to the following  process.
</p>
<p>
    First, the throat area is determined, using the following equation:

    $$Ath = VlvPosIn*\textit{s_V_Ae_th}$$

    in which <i>VlvPosIn</i> is the valve's position and <i>s_V_Ae_th</i> is
    the valve area, as specified by the user by double clicking t