Changes between Version 25 and Version 26 of u/erica/JeansTest


Ignore:
Timestamp:
07/25/13 10:32:02 (12 years ago)
Author:
Erica Kaminski
Comment:

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  • u/erica/JeansTest

    v25 v26  
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    162162
    163 [[Image(rhoInit.png, 35%)]]
     163[[Image(rhoInit.png, 20%)]]
    164164t=0
    165165
    166166
    167 [[Image(RhoFinal.png, 35%)]]
     167[[Image(RhoFinal.png, 20%)]]
    168168t=1/omega
    169169
     
    172172These next plots show AstroBEAR's output using density, velocity, and pressure perturbations described earlier:
    173173
    174 [[Image(JeansInit23July2013.png, 35%)]]t=0
     174[[Image(JeansInit23July2013.png, 20%)]]t=0
    175175
    176176Vx is in red, rho is in green. The density peaks at the zero's of Cos(kx). E.g., a local max is at 1. The vx perturbation is a Sin(x) function, and it has minima that corresponds with the density maxima. This produces converging flows at the max in density, as you would expect you need to develop the Jeans instability.
    177177
    178 [[Image(JeansFinal23July2013.png, 35%)]]t=5/omega
     178[[Image(JeansFinal23July2013.png, 20%)]]t=5/omega
    179179
    180180By the end of the sim, the density perturbation has grown a little, but velocity has grown a lot.
     
    184184Now, a query-over-time of rho at r = (1,0,0) produces the following output when compared to the analytical result:
    185185
    186 [[Image(GrowthRate.png, 35%)]]
     186[[Image(GrowthRate.png, 30%)]]
    187187
    188188Pretty tight fit!