pencil.diag.gas_alpha
=====================

.. py:module:: pencil.diag.gas_alpha


Functions
---------

.. autoapisummary::

   pencil.diag.gas_alpha.gas_alpha


Module Contents
---------------

.. py:function:: gas_alpha(sim=False, t_range=[0, -1], OVERWRITE=False)

   This calculates the global alpha-value from ts object via
           alphah=(2./3.)*(ts3.uxuym)/(ts3.rhom*ts3.csm**2)
   for the lastNentries of the time series.
   Input:
       t_range         use this time range of the timeseries
       OVERWRITE       overwrite alpha file in sim.pc_datadir/alpha_<lastNentries>

   :returns: alpha dictionary