Analytical studies of collimated winds. I - Topologies of 2-D helicoidal hydrodynamic solutions

Details Analytical studies of collimated winds. I - Topologies of 2-D helicoidal hydrodynamic solutions Analytical studies of collimated winds. I - Topologies of 2-D helicoidal hydrodynamic solutions

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...231..270t&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 231, no. 1, May 1990, p. 270-276.

Statistics

Computation

18

Computational Astrophysics, Hydrodynamic Equations, Magnetohydrodynamic Flow, Stellar Winds, Topology, Compressible Flow, Gravitational Effects, Stellar Atmospheres, Two Dimensional Models

Scientific paper

Continuous global solutions are obtained for the steady hydrodynamic equations describing outflows from a nonpolytropic atmosphere around a central gravitating object. An analysis of the topology of the solutions suggests that there exists a unique wind-type solution that meets the condition of zero gas pressure at infinity. It is found that the higher the degree of collimation, the larger is the asymptotic speed of the collimated outflow, while the density and pressure increase monotonically away from the flow axis toward the equator.

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