Changes between Version 3 and Version 4 of rkemmerer‏


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Timestamp:
11/19/14 14:51:54 (10 years ago)
Author:
Rebecca
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  • rkemmerer‏

    v3 v4  
    1818One final note.  The early hydro tapered-jet computations of Sahai & Lee (2003) at coarse resolution found that the walls of the jet are where wind streamlines slide and converge towards the tip of the lobe.  That's the concept behind the Canto model developed originally to explain H-H outflows.  Very smooth walls are essential if the streamlines are to move coherently towards the lobe tip.  In our sims we see no trace of streamlines sliding up the lobe walls, nor do we see any evidence of flow convergence at the lobe tips.
    1919
    20 [[Image(http://students.washington.edu/rlkem/taper15.jpg)]]
     20[[Image(https://dl.dropboxusercontent.com/1/view/x4gjtb9oxlktqb2/Apps/Pancake.io/Sim%20Images/taper15.jpg)]]
    2121
    2222
    … …  
    3030Rjet really matters!!!!
    3131
    32 [[Image(http://students.washington.edu/rlkem/rjet1.jpg)]]
     32[[Image(https://dl.dropboxusercontent.com/1/view/w961r191akpp2lp/Apps/Pancake.io/Sim%20Images/rjet1.jpg)]]
    3333
    3434Here's the originating problem.data file for one of the runs (the only variable that changes is Rjet)
    … …  
    129129The series of sims below is similar to the one that I sent yesterday with these exceptions: the opening angle of the Gaussian-tapered flow is 15 deg, not 45, and the structure of the ambient (environment) gas includes the torus in addition to the AGB wind.  In this case the outcomes of each of the Rjet sims is similar in shape but not in size.  Oddly, it is the Rjet=2 sim in which add behavior develops near the y axis.
    130130
    131 [[Image(http://students.washington.edu/rlkem/rjet2.jpg)]]
     131[[Image(https://dl.dropboxusercontent.com/1/view/03qkic5yqmi0ftc/Apps/Pancake.io/Sim%20Images/rjet2.jpg)]]
    132132
    133133Comments on size:  The mass and momentum in the Rjet = 2 sim is 4x larger than that in the Rjet = 0.5 case, so the flow penetrates further as Rjet increases.  However, the odd knot that develops near the y axis -- combined with the fact that the flow barely encounters the torus on its lateral edge -- mean that the head of the flow spreads out laterally and accretes more ambient with time.  This slows it down.