A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2015; you can also visit the original URL.
The file type is application/pdf
.
Numerical Modeling of Subgrid-Scale Flow in Turbulence, Rotation, and Convection
[chapter]
1986
Astrophysical Radiation Hydrodynamics
We show that it ~s impossible to simulate numerically all of the length-scales in astrophysical turbulence. We look at the effects of ignoring the unresolvable. small-scale flow. and show how numerical simulations that neglect the subgrid-scale motions produce erroneous solutions. Then we discuss the "quick fix" remedy of introducing a numerical or eddy-viscosity. We sketch how the analytic theories of turbulence attempt to model the large-scale effects of the small-scale motions. In the last
doi:10.1007/978-94-009-4754-2_11
fatcat:wmwzlr2znja2dhcwgqomvm4pq4