method_ppml.incl

:p:`Method:ppml` parameters are used to initialize parameters for
Enzo-E's PPML MHD methods. These include "ppml" (or "ppml_it") for the
idealized solver, and "ppml_ig" for the adiabatic version.

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.. par:parameter:: Method:ppml:dt_weight

   :Summary: :s:`Timestep adjust for Strang splitting`
   :Type:   :par:typefmt:`float`
   :Default: :d:`1.0`
   :Scope:     :z:`Enzo`

   :e:`This parameter is used to implement Strang splitting to preserve the 2nd order of accurace of time integration of PPML when forcing and cooling/heating source terms are present. In that case dt_weight should be set to 0.5 and PPML called twice in the` :par:paramfmt:`Method:list` :e:` parameter list with methods implementing forcing terms between them. The default is not to use Strang splitting so dt_weight = 1.0`