Changes between Version 18 and Version 19 of u/erica/MHDshocksReorientation

Timestamp:

03/09/16 17:20:38 (9 years ago)

Author:

Erica Kaminski

Comment:

—

u/erica/MHDshocksReorientation

@@ -30 +30 @@
 [[Image(vx_2dcf.png, 60%)]]
 
-When the scenario is finite, there is now pressure gradients between the collision refion and the ambient that allow for a radial expulsion of gas from the collision region. Over time in these plots, we see both the reorientation of the inner surface of the collision region, as well as the outer (fast) shock front. Here are 3 likely scenarios for the reorientation of the inner collision region. 
+When the scenario is finite, there is now pressure gradients between the collision region and the ambient that allow for a radial expulsion of gas from the collision region. Over time in these plots, we see both the reorientation of the inner surface of the collision region, as well as the outer (fast) shock front. Here are 3 likely scenarios for the reorientation of the inner collision region. 
 
- '''More x-momentum due to kinking and shear flow and balance between pressure and radial expansion.'''[[br]]
+ '''More x-momentum'''[[br]]
  In this picture, the radial expansion of the flow drags the field lines out of the collision region. Depending on which side of the interface you are on, this is either enhanced by the shear, or partially cancelled out. Figure of close up. On the side where the field remains relatively straight, gas doesn't get deflected as strongly as on the other side, given the flow is tied to the field. (Here, could strengthen this argument by better understanding of the connection between field, velocity, in MHD shocks). This leads to more net x momentum on one side of the interface then the other, and thus, torque. A figure shows this to be the case. However, whether this picture for why the momentum gets amplified on one side of the interface is correct, is still unclear. Furthermore, I can't find evidence for this visually in Visit.