Changes between Version 13 and Version 14 of u/erica/AccretionModelingBlog


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Timestamp:
03/20/18 19:37:26 (7 years ago)
Author:
Erica Kaminski
Comment:

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  • u/erica/AccretionModelingBlog

    v13 v14  
    11== Bondi Accretion ==
    2 
    3 === 3/18/2018 ===
    42
    53Am working on a 3D simulation of Bondi Flow onto a central sink particle and studying the accretion properties using the Krumholz accretion algorithm.
     
    3634|| $\dot{M}$ || 2692.17  ||
    3735
     36== Research Log: ==
     37
     38=== 3/18/18, $\gamma=7/5$, dynamical cases ===
     39
     40==== Resolving sonic point ====
     41
     42==== Not-resolving sonic point ====
     43
     44=== 3/18/18, $\gamma=1.66$, steady-state case  ===
     45
    3846The case of $\gamma=5/3$ flow is an extreme limit for the solution space. This value of $\gamma$ has a few interesting features:
    3947
    4048In other words, when $\gamma=5/3$ exactly, we have no accretion flow.
    41 
    42 
    43 === Results ===
    44 ==== $\gamma=1.66$ case ====
    4549
    4650|| $\gamma$ || 1.66 ||
     
    5862As the following images show, this set of conditions produces a steady state solution... Both the sonic point is not-resolved, as well as the solution is being stepped on where non-steady effects could happen due to effects of the accretion algorithm. The attached module files that produce these files are thus called "*_steadystate*"
    5963
    60 || Mesh || [[Image(mesh_comparison.png, 25%)]] ||
    61 || Radial velocity || [[Image(vr.png, 25%)]] ||
    62 || Radial mach || [[Image(radial_mach.png, 25%)]] ||
    63 || Velocity field || [[Image(vec_comparison.png, 25%)]] || 
    64 || Isosurface (r=rsink) || [[Image(isosurface.png, 25%)]] ||
    65 || Mass flux (r=rsink) || [[Image(massflux.png, 25%)]] ||
     64|| Mesh || [[Image(mesh_comparison.png, 15%)]] ||
     65|| Radial velocity || [[Image(vr.png, 15%)]] ||
     66|| Radial mach || [[Image(radial_mach.png, 15%)]] ||
     67|| Velocity field || [[Image(vec_comparison.png, 15%)]] || 
     68|| Isosurface (r=rsink) || [[Image(isosurface.png, 15%)]] ||
     69|| Mass flux (r=rsink) || [[Image(massflux.png, 15%)]] ||
    6670
    6771== Library ==