Changes between Version 1 and Version 2 of PlanetaryAtmospheres

Timestamp:

09/18/13 11:25:00 (11 years ago)

Author:

Jonathan

Comment:

—

PlanetaryAtmospheres

@@ -12 +12 @@
  * Non rotating
 
+
 Dobbs Dixon '08
 Domain
  * Radius goes from 7.95e9 cm to 8.65e9 cm (1.06 -1.2 R_j)
- * Single Temperature
+ * Single Temperature (assumes Planck opacity is >> )
  * They use [[latex($\lambda = \frac{2+R}{6+3R+R^2}$)]] instead of [[latex($\frac{1}{R}\left ( \coth{R}-\frac{1}{R} \right )$)]]
 [[Image(Limiter.png, width=400)]]
+ * [[latex($\gamma=7/5$)]]
+ * [[latex($\chi=2.3$)]]
+ * Roseland opacities found using Pollack et al 1985 for low T with Alexander & Ferguson for high T
+ * Initial Density and Temperature profiles taken from 1D model (B1 of Bodenheimer 2001) (.63 M,,J,, for 4.5 Gyr with a 1200 degree outer boundary)
+ * Outer boundary set to T= max(1200 K * [cos(phi)*cos(theta)]^(1/4), 100 K)
 
+* Non rotating model - no coriolis or centrifugal forces... - no winds
+* Rotating model - 3 days
+
+
+
+Dobbs Dixon'10
+
+* Added viscosity
+* Added stellar heating using optical depth and high energy planck opacity
+
+
+Current differences between Ian's code and AstroBEAR
+* AstroBEAR folds in gas/radiation energy coupling into implicit solve...  Hypre has both kappa,,R,, and kappa,,P,, terms - with sub-cycling for changes in source function.
+* AstroBEAR also assumes 'kappa' is constant over implicit update...  assumes [[latex($\frac{\partial \kappa}{\partial T} = 0$)]]...  
+* No Kappa_A terms (stellar heating) in AstroBEAR
+* Need to develop communication patterns for calculating optical depth from star to get heating term correct.  Could use initial spherical profile to estimate optical depth as a function of position?  Not sure how this is done in Ian's code
+* Viscosity may need to be incorporated later...  Shule is developing this.
+
+* Second AMR implicit solve may need to be added later (ie Howell and Greenough 2002)
 
 == Run 1 ==