  Context. In binary star systems, the winds from the two components impact
each other, leading to strong shocks and regions of enhanced density and
temperature. Potentially habitable circumbinary planets must continually be
exposed to these interactions regions.
  Aims. We study, for the first time, the interactions between winds from
low-mass stars in a binary system, to show the wind conditions seen by
potentially habitable circumbinary planets.
  Methods. We use the advanced 3D numerical hydrodynamic code Nurgush to model
the wind interactions of two identical winds from two solar mass stars with
circular orbits and a binary separation of 0.5 AU. As input into this model, we
use a 1D hydrodynamic simulation of the solar wind, run using the Versatile
Advection Code. We derive the locations of stable and habitable orbits in this
system to explore what wind conditions potentially habitable planets will be
exposed to during their orbits.
  Results. Our wind interaction simulations result in the formation of two
strong shock waves separated by a region of enhanced density and temperature.
The wind-wind interaction region has a spiral shape due to Coriolis forces
generated by the orbital motions of the two stars. The stable and habitable
zone in this system extends from approximately 1.4 AU to 2.4 AU. (TRUNCATED)
