Changes between Version 16 and Version 17 of AccretionDiskTutorial

Timestamp:

08/28/12 12:56:44 (12 years ago)

Author:

idilernia

Comment:

—

AccretionDiskTutorial

@@ -72 +72 @@
 this will result in R,,disk,,/lScale = 4.
 
+'''Warning:''' Always make sure to check ''physics.data'' for the entries 
+{{{
+MinTemp         =       1e-3,      ! minimum allowed temperature for the system, without cooling, this should be zero.
+MinDensity      =       1e-3       ! Minimum computational density
+}}}
+and set them to appropriate values depending on the chosen scales.
+
+
 === Softening ===
 
@@ -133 +141 @@
 the refined radius can be increased.
 
+Here is a comparison of what the mesh looks like before and after we made this change in problem.f90[[BR]]
 [[Image(refinement.png, 800px)]]
+
+'''Note:''' You need to recompile AstroBEAR after making any changes to problem.f90
 
 [[BR]]
@@ -139 +150 @@
 === Mach Number ===
 
+When setting up a new simulation it is good practice to check that the Mach values are below a certain threshold, in most of computational simulation this value is ~60. [[BR]] Values above this threshold may create difficulties in evolving a model and therefore create computational errors.
+[[BR]]
+To plot the Mach numbers in Visit you can check the [https://clover.pas.rochester.edu/trac/astrobear/wiki/VisIt Visit page] and locate Mach in the Chombo expressions list [[BR]]
+The plot below represents a disk simulation that respects the limits stated above:[[BR]]
+[[Image(mach.png, 500px)]]
 
-=== MHD and Solvers ===
+=== Other parameters  ===
+
+Now that you have acquired the essential knowledge to set up a disk module, you should be capable to change other aspects of a simulation such as:[[BR]]
+- Equation of state
+- Solvers
+- MHD
+- Boundary conditions
+- Self gravity
+- Accretion
+[[BR]]
+You are advised to analyze every .data file to familiarize with other aspects of this module that were not discussed in this tutorial.