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Hydrodynamical Simulations of Molecular Dynamics in Supersonic Turbulent Flow
 

Summary: Hydrodynamical Simulations of Molecular Dynamics in
Supersonic Turbulent Flow
Georgi Pavlovski (gbp@star.arm.ac.uk)  and Michael D. Smith
Armagh Observatory, College Hill, Armagh, BT61 9DG, N.Ireland, U.K.
Mordecai{Mark Mac Low
Department of Astrophysics, American Museum of Natural History, Central Park
West at 79th Street, New York, NY 10024-5192, U.S.A.
Alexander Rosen
Armagh Observatory, College Hill, Armagh, BT61 9DG, N.Ireland, U.K.
June 20, 2003
Abstract. Here we present results from simulations of turbulence in star form-
ing environments obtained by coupling three dimensional hydrodynamical models
with appropriate chemical processes. We investigate regimes of decaying high-speed
molecular turbulence. Here we analyse PDFs of density for the volume, mass, molec-
ular mass and the energy distribution over the range of scales. We compare our
results to those previously obtained for isothermal turbulence and suggest possible
explanations.
Keywords: hydrodynamics { turbulence { molecular processes { clouds { ISM
1. Motivations
It is generally accepted now that supersonic turbulence is of funda-

  

Source: Armagh Observatory

 

Collections: Physics