Turbulence driven by stellar jets, the possibility and the efficiency
  We investigate the feedback of the stellar jets on the surrounding
interstellar gas based on 2D and 3D simulations applying HD and MHD module of
PLUTO 4.2 code. The main question we address is whether the stellar jet can be
considered as a turbulence driver into the interstellar gas. In addition, we
investigate the most effective circumstances in which the driven turbulence is
larger and can survive for a longer time scale in the ambient gas.
  We present a case study of different parameters runs including the jet Mach
number, the initial jet velocity field and the background magnetic field
geometries and the interacting jets. Also, we study the environmental effects
on the jet-gas interaction by considering the non-homogeneous surrounding gas
containing the clumps in the model setup.
  Among different setups, we find that for (1) a higher jet Mach number, (2) a
rotating jet, 16 pages(3) a jet propagating in a magnetized environment, (4)a
jet propagating in a non-homogeneous environment, and (5) the interacting jets
more fluctuations and random motions are produced in the entrained gas which
can survive for a longer time scale. In addition, we perform the 3D simulations
of jet-ambient gas interaction and we find that the amount of
(subsonic-supersonic) fluctuations increases compared to the axisymmetric run
and the entrained gas gains higher velocities in a 3D run. In total, we confirm
the previous finding that the stellar jets can transfer the turbulence on
neighboring regions and are not sufficient drivers of the large-scale
supersonic turbulence in molecular clouds.
