Changes between Version 42 and Version 43 of u/u/erica/BEboundary

Timestamp:

05/30/13 15:16:53 (11 years ago)

Author:

Erica Kaminski

Comment:

—

u/u/erica/BEboundary

@@ -67 +67 @@
 = Remarks = 
 
-Tsim is the final time of the simulations and is defined by the time when a sink particle forms from the collapse, accept in the stability case where a sink did not form, and tsim is taken to be 5 crossing times for the sphere. All of these cases have ambient freefall times that exceed the simulation time, yet some drastically more than others. This may be a diagnostic for which ambients are more conducive to homologous collapse than others.
+Here is a table that sums up the different behaviors we see in the ambient flow from the lineouts of density. The major trend that stands out from this data is that when the free-fall time of the ambient is << sound-crossing time of the ambient (defined by (domain length/sound speed of ambient)), we see a rise in density immediately outside of the BE sphere that looks to correspond with a homologous collapse solution of the ambient. When the reverse holds, we do not see this behavior. This makes sense; the ambient is strongly jeans unstable in the Matched and 1/3 cases, but is not in the BP, 1/30, and stability cases. 
 
 
@@ -76 +76 @@
 ||= No =||= 1/30 =||= 1.4  =||= 0.7 =||= 0.6 =||= Thermal =||
 ||= No =||= BP =||= 2.38  =||= 0.192 =||= 0.35 =||= Thermal =||
+
+Tsim is the final time of the simulations and is defined by the time when a sink particle forms from the collapse, accept in the stability case where a sink did not form, and tsim is taken to be 5 crossing times for the sphere. All of these cases have ambient freefall times that exceed the simulation time, yet some drastically more than others. This may be a diagnostic for which ambients are more conducive to homologous collapse than others.