Magnetohydrodynamic total pressure (source code)

= Magnetohydrodynamic total pressure
{title2=$\Pi$}

The <magnetohydrodynamic total pressure> is $\Pi=p+B^2/(2\mu_0)$, the sum of gas <pressure> and <magnetic pressure>. The remaining <Lorentz force> is <magnetic tension>, so this scalar does not include the entire magnetic stress.