%% $Date: 2012-07-06 17:42:54#$
%% $Revision: 148 $
\index{velocity\_mach\_raf}
\algdesc{Mach number}
{ %%%%%% Algorithm name %%%%%%
velocity\_mach\_raf
}
{ %%%%%% Algorithm summary %%%%%%
Calculates the mach number based on dynamic and static pressure.
}
{ %%%%%% Category %%%%%%
Thermodynamics
}
{ %%%%%% Inputs %%%%%%
${\Delta}P$ & Vector & Dynamic pressure [hPa] \\
$P_s$ & Vector & Static pressure [hPa]
}
{ %%%%%% Outputs %%%%%%
$M$ & Vector & Mach number
}
{ %%%%%% Formula %%%%%%
\begin{displaymath}
M = \sqrt{\frac{2}{\gamma - 1}\left[\left(\frac{\Delta{P}}{P_s}+1\right)^{\frac{\gamma - 1}{\gamma}}- 1 \right]}
\end{displaymath}
}
{ %%%%%% Author %%%%%%
NCAR-EOL
}
{ %%%%%% References %%%%%% 
NCAR-RAF Bulletin \#23 \cite{NCAR23} 
}


