1 / 16

Solar Convection Simulations

Solar Convection Simulations. Bob Stein Åke Nordlund Dali Georgobiani Werner Schaffenberger David Benson. Current Simulations. Hydrodynamic-Convection 96 Mm wide x 20 Mm deep Resolution: 100 km horizontal, 12-75 km vertical 20.9 hours

chronister
Download Presentation

Solar Convection Simulations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Solar Convection Simulations • Bob Stein • Åke Nordlund • Dali Georgobiani • Werner Schaffenberger • David Benson

  2. Current Simulations • Hydrodynamic-Convection96 Mm wide x 20 Mm deepResolution: 100 km horizontal, 12-75 km vertical20.9 hours • Magneto-Convection, 250G mean Bvertical6 Mm wide x -.5 to 2.5 Mm deepResolution: 6 km horizontal, 4.6 - 14 km vertical3.5 minutes

  3. Streamlines. 15 hours, 48 Mm wide x 20 Mm deep. Vertical scale is depth.

  4. Tracer particle motion. 15 hours, 48 Mm wide x 20 Mm deep. Vertical scale is grid (not depth).

  5. Wave Reflection - Characteristic BC Bottom Top

  6. Velocity at surface -- note swirls

  7. Magnetic field at surface (kG). <Bvert>=250 G

  8. Emergent continuum intensity

  9. Velocity slice (km/s)

  10. Vertical velocity (image) and Magnetic Field (vectors) in slice (km/s)

  11. Temperature fluctuation and Velocity in slice

  12. Vxy T Bxy T

  13. Future Simulations • Construct starting solution for 20 Mm deep run with characteristic BC (now) • Feed in horizontal magnetic field at bottom of 20 Mm deep x 48 Mm wide box to study network formation and maintenance (March 08) • Impose active region field on 96 Mm wide convection snapshot (May 08) • Feed in twisted magnetic flux tube at bottom of 20 Mm deep x 48 Mm wide simulation (May 08) Support: NNX07AO71G, NNX07AH79G, NNX07AI08G, AST0605738

More Related