Investigators make detailed numerical simulations of highly turbulent convection in resolving the yield interactions of rotation and convection play in differential rotation in solar-like stars. Such simulations with very high spatial resolution, enabled by the GAFD Turbulence team on new computational codes and procedures, emphasize on different aspects of the physics approximated in a dynamical system as complex as the solar convection zone. The Colorado team employs an anelastic spherical harmonic code, designed to deal with complex flows at high resolution in spherical shells. The Minnesota team uses a fully compressible Piecewise-Parabolic Method code, where an entire rotating star with a convective envelope is placed in the middle of a very fin uniform Cartesian grid. Both allow magnetic field effects to be included, as well, to prospectively study magnetic dynamo processes taking place deep in the convection zone, and effects visible near the stellar surface.

Agency
National Science Foundation (NSF)
Institute
Division of Atmospheric and Geospace Sciences (AGS)
Application #
9731676
Program Officer
Thomas J. Bogdan
Project Start
Project End
Budget Start
1998-07-15
Budget End
2002-06-30
Support Year
Fiscal Year
1997
Total Cost
$435,670
Indirect Cost
Name
University of Colorado at Boulder
Department
Type
DUNS #
City
Boulder
State
CO
Country
United States
Zip Code
80309