Computer Science
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985rpspr...5...19v&link_type=abstract
In its USSR Rept.: Space (JPRS-USP-85-004) p 19 (SEE N85-26772 16-12) Transl. into ENGLISH from Geomagn. i Aeron. (Moscow), v
Computer Science
Flow Stability, Hydrodynamics, Solar Wind, Streamlined Bodies, Comets, Inhomogeneity, Planets, Velocity Distribution
Scientific paper
The hydrodynamic instability of waves in the solar wind near planets and comets was studied. It is postulated that the solar wind has a point of stoppage on a contact surface within which it does not penetrate. This case approximately corresponds to reality in the case of flow around some planets and comets. This phenomenon is investigated using a hydrodynamic model of the solar wind (not taking into account additional sources of particles). The flow near such an obstacle is nonuniform and inhomogeneous and this can give rise to instability. The increment is computed and the nature of this instability is analyzed. It is demonstrated that the reason for this instability is inhomogeneity of the velocity field, slowing of the flow and its shearing. A formula is derived for determining the local instability increment. This is followed by calculations of the nature of instability near the point of stoppage in front of and behind the body. A study of the influence of viscosity revealed that the region of unstable wave vectors is narrowed under the influence of viscosity.
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