Changes between Version 2 and Version 3 of MachStems

Timestamp:

11/13/12 13:48:10 (12 years ago)

Author:

ehansen

Comment:

—

MachStems

@@ -1 +1 @@
 = Mach Stems =
+
+[[BR]]
+== Stationary Clumps ==
+This problem set up has bow shocks from two identical, stationary clumps.  I test different gammas and different separation distances.  To reduce computation, I am only using one clump with a reflecting wall on the lower r boundary to simulate the second clump's bow shock.  I also only simulate 1/4 of the clump due to symmetry.  In the context of this problem, critical separation distance is equivalent to 2 times the critical radius.
+
+Thinking in terms of critical radius versus critical angle can get confusing.  Traditionally, we think of mach stem formation in terms of critical angle.  Anything '''above''' this angle means a mach stem will form.  The critical angle corresponds to a critical radius, but now we must remember that anything '''below''' this radius means a mach stem will form.
 
 Below is a table of the resolutions used for all of the runs.  These were determined by keeping the proportions of the domain constant and shooting for a minimum of 32 cells per clump radius.  As a result of doing it this way, some runs will have higher resolution, but it basically stays between 32 and 38 cells per clump radius.  For the 'lower r boundary' column, crit = critical, acrit = above critical, bcrit = below critical.  Mach stems should form at crit and bcrit, but not at acrit.
@@ -16 +22 @@
 ||= 1.1 =||= acrit =||= 12, 18 =||= 1.47, 2.205 =||= 32.65 =||
 ||= 1.1 =||= bcrit =||= 10, 15 =||= 1.07, 1.605 =||= 37.38 =||
+
+[[BR]]
+== One Moving Clump ==
+
+[[BR]]
+== Colliding Bow Shocks ==