Changes between Version 3 and Version 4 of u/erica/TestingOpSplitting

Timestamp:

09/15/13 12:16:51 (12 years ago)

Author:

Erica Kaminski

Comment:

—

u/erica/TestingOpSplitting

@@ -1 +1 @@
 = Initialization = 
 
-To test the operator splitting, I initialized the grid with the same conditions as the Jeans test I did with astrobear (see that wiki page under the self-gravity section of my user page). Namely, I 
-
-computed the Jeans length (in cm) for a gas of density rho = 3.34d-21 g/cc, temperature T = 100 K, and gamma = 1.0001. I then seeded the grid (that was 50x Jeans length long) with the prescribed 
-
-density, velocity, and pressure perturbations as derived before. The density form was straightforward, 
+To test the operator splitting, I initialized the grid with the same conditions as the Jeans test I did with astrobear (see that wiki page under the self-gravity section of my user page). Namely, I computed the Jeans length (in cm) for a gas of density rho = 3.34d-21 g/cc, temperature T = 100 K, and gamma = 1.0001. I then seeded the grid (that was 50x Jeans length long) with the prescribed density, velocity, and pressure perturbations as derived before. The density form was straightforward, 
 
 
@@ -24 +20 @@
 [[latex($\Gamma = 4 \pi G \rho_0[1-(\lambda_J/ \lambda)^2]$)]]
 
-In order to keep the velocity perturbation dimensionless, the factor out in front of the Sin(kx) needed to be scaled to computational units. This involved a factor of lscale for k, rhoscale for 
-
-rho_0 in the growthrate, and a term for scaled gravity in the growthrate. 
+In order to keep the velocity perturbation dimensionless, the factor out in front of the Sin(kx) needed to be scaled to computational units. This involved a factor of lscale for k, rhoscale for rho_0 in the growthrate, and a term for scaled gravity in the growthrate. 
 
 = Scaling gravitational constant =