Physics
Scientific paper
Nov 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7614996d&link_type=abstract
Presented at the Fluid Dyn. Meeting, College Park, Md., 24-25 Nov. 1975; sponsored by the Am. Phys. Soc.
Physics
Formation, Gravitational Collapse, Stars, Turbulence, Differential Equations, Equations Of Motion, Pressure Effects
Scientific paper
The gravitational collapse of a rotating cloud or vortex is analyzed by expanding the dependent variables in the equations of motion in two-dimensional Taylor series in the space variables. It is shown that the gravitation and rotation terms in the equations are of first order in the space variables, the pressure gradient terms are of second order, and the turbulent viscosity term is of third order. The presence of a turbulent viscosity insures that the initial rotation is solid-body-like near the origin. The effect of pressure on the collapse process is found to depend on the shape of the initial density disturbance at the origin. Dimensionless collapse times, as well as the evolution of density and velocity, are calculated by solving numerically the system of nonlinear ordinary differential equations resulting from the series expansions. The axial inflow plays an important role and allows collapse to occur even when the rotation is large. An approximate solution of the governing partial differential equations is also given; the equations are used to study the spacial distributions of the density and velocity.
No associations
LandOfFree
Gravitational collapse of a turbulent vortex with application to star formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gravitational collapse of a turbulent vortex with application to star formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational collapse of a turbulent vortex with application to star formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1377930