Changes between Version 8 and Version 9 of u/lchamandy/2017-04-17


Ignore:
Timestamp:
04/14/17 15:01:08 (8 years ago)
Author:
Luke
Comment:

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  • u/lchamandy/2017-04-17

    v8 v9  
    2020[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Ambp038/rho1d_Ambp038.gif 1d density]
    2121[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Ambp038/P1d_Ambp038.gif 1d pressure]\\
     22DESCRIPTION: Star expands and contracts, becoming first more diamond-shaped and then more square-shaped.
    2223
    2324(ii) Isothermal hydrostatic atmosphere (Atm001, 4.1 hrs on bluehive standard 120 cores)\\
    2425[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm001/rho3doldrange_Atm001.gif 2d density]
    2526[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm001/rho2dv1e6_Atm001.gif 2d density and velocity]\\
     27DESCRIPTION: Star becomes unstable after about 1 dynamical time.
    2628
    2729'''b) Multipole expansion BCs, no velocity damping'''\\
     
    3234[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp010/rho1d_Damp010.gif 1d density]
    3335[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp010/P1d_Damp010.gif 1d pressure]\\
     36DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    3437
    3538(ii) Isothermal hydrostatic atmosphere (Atm003)\\
    3639[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm003/rho2d_Atm003.gif 2d density]
    3740[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm003/rho2dv1e6_Atm003.gif 2d density and velocity]\\
     41DESCRIPTION: Star becomes unstable after about 1 dynamical time.
    3842
    3943'''Comparison with (a) on left and (b) on right'''\\
     
    7377[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp010/rho1d_Damp010.gif 1d density]
    7478[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp010/P1d_Damp010.gif 1d pressure]\\
     79DESCRIPTION: Star becomes square-shaped, and unstable after a few dynamical times.
    7580
    7681(ii) Isothermal hydrostatic atmosphere (Atm003)\\
    7782[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm003/rho2d_Atm003.gif 2d density]
    7883[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm003/rho2dv1e6_Atm003.gif 2d density and velocity]\\
     84DESCRIPTION: Star becomes unstable after about 1 dynamical time.
    7985
    8086'''b) Fixed profile ($\rho$, $P$, $\bm{v}=0$) on boundary hydro BCs, Multipole expansion Poisson BCs, no velocity damping'''\\
     
    8591[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp017/rho1d_Damp017.gif 1d density]
    8692[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp017/P1d_Damp017.gif 1d pressure]\\
     93DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    8794
    8895(ii) Isothermal hydrostatic atmosphere (Atm004)\\
    8996[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm004/rho2d_Atm004.gif 2d density]
    9097[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm004/rho2dv1e6_Atm004.gif 2d density and velocity]\\
     98DESCRIPTION: Star becomes unstable after about 1 dynamical time.
    9199
    92100'''c) Fixed profile outside sphere (of radius $5\times10^{12}$ cm) hydro BCs, Multipole expansion Poisson BCs, no velocity damping'''\\
     
    97105[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp018/rho1d_Damp018.gif 1d density]
    98106[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp018/P1d_Damp018.gif 1d pressure]\\
     107DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    99108
    100109(ii) Isothermal hydrostatic atmosphere (Atm008)\\
     
    102111[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm008/rho2dv1e6_Atm008.gif 2d density and velocity]
    103112[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm008/rho2d_Atm008.gif 2d density extended range]\\
     113DESCRIPTION: Star becomes unstable after about 1 dynamical time.
    104114
    105115'''d) Fixed pressure on boundary with rho and veloc extrapolated hydro BCs, Multipole expansion Poisson BCs, no velocity damping'''\\
     
    107117[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp023/rho2d_Damp023.gif 2d density]
    108118[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp023/rho2dv1e6_Damp023.gif 2d density and velocity]\\
     119DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    109120
    110121'''e) Fixed pressure and density on boundary with veloc extrapolated hydro BCs, Multipole expansion Poisson BCs, no velocity damping'''\\
     
    112123[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp025/rho2d_Damp025.gif 2d density]
    113124[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp025/rho2dv1e6_Damp025.gif 2d density and velocity]\\
     125DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    114126
    115127'''f) Fixed pressure outside spherical region with rho and veloc extrapolated hydro BCs, Multipole expansion Poisson BCs, no velocity damping'''\\
    116128(i) Constant ambient pressure and density (Damp024, 7.7 hrs on comet compute, 576 cores)\\
    117129[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp024/rho2dv1e6_Damp024.gif 2d density and velocity]\\
     130DESCRIPTION: Ambient medium becomes unstable and instabilities propagate inward after a few dynamical times, destroying star.
    118131
    119132(ii) Isothermal hydrostatic atmosphere (pending on stampede) (Atm010)\\
    120 [http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm010/rho2dold_Atm010.gif 2d density]
    121133[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm010/rho2dv1e6_Atm010.gif 2d density and velocity]\\
     134DESCRIPTION: Very large velocities at early times at corners of grid.
    122135
    123136'''g) Fixed profile outside sphere of radius $4\times10^{12}$ cm instead of $5\times10^{12}$ cm, Multipole expansion Poisson BCs, no velocity damping'''\\
     
    125138[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp026/rho2d_Damp026.gif 2d density]
    126139[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp026/rho2dv1e6_Damp026.gif 2d density and velocity]\\
     140DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    127141
    128142'''h) Fixed pressure outside sphere ($r=4\times10^{12}$ cm) with rho and veloc extrapolated hydro BCs, Multipole expansion Poisson BCs, no velocity damping'''\\
     
    130144[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp027/rho2d_Damp027.gif 2d density]
    131145[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp027/rho2dv1e6_Damp027.gif 2d density and velocity]\\
     146DESCRIPTION: Ambient medium becomes unstable and instabilities propagate inward after a few dynamical times, destroying star.
    132147
    133148'''i) Reflecting hydro BCs, Multipole expansion Poisson BCs, no velocity damping'''\\
     
    135150[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp028/rho2d_Damp028.gif 2d density]
    136151[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp028/rho2dv1e6_Damp028.gif 2d density and velocity]\\
     152DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    137153
    138154(ii) Isothermal hydrostatic atmosphere, no velocity damping (Atm011, 11 hrs on bluehive standard, 120 cores)\\
     
    141157[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm011/rho2d_extended_Atm011.gif 2d density extended]
    142158[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm011/rho2dv1e6_extended_Atm011.gif 2d density and velocity extended]\\
     159DESCRIPTION: Star preserves its shape rather well but region exterior to star begins to be unstable after a few dynamical times.
    143160
    144161'''Comparison with (a) on left and (b) on right'''\\
     
    198215[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp017/rho1d_Damp017.gif 1d density]
    199216[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp017/P1d_Damp017.gif 1d pressure]\\
     217DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    200218
    201219(ii) Isothermal hydrostatic atmosphere (Atm004)\\
    202220[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm004/rho2d_Atm004.gif 2d density]
    203221[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm004/rho2dv1e6_Atm004.gif 2d density and velocity]\\
     222DESCRIPTION: Star becomes unstable after about 1 dynamical time.
    204223
    205224'''b) Fixed profile on boundary hydro BCs, Multipole expansion Poisson BCs, Velocity damping with $\tau=1\times10^5$ s'''\\
     
    210229[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp021/rho1d_Damp021.gif 1d density]
    211230[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp021/P1d_Damp021.gif 1d pressure]\\
     231DESCRIPTION: Square-shaped morphology and velocities reduced from case III(a), but still begins to be unstable after a few dynamical times.
    212232
    213233'''c) Fixed profile outside sphere hydro BCs, Multipole expansion Poisson BCs (same as II(c) above), no velocity damping'''\\
     
    218238[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp018/rho1d_Damp018.gif 1d density]
    219239[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp018/P1d_Damp018.gif 1d pressure]\\
     240DESCRIPTION: Star becomes square-shaped, starts to become unstable after a few dynamical times.
    220241
    221242(ii) Isothermal hydrostatic atmosphere (Atm008)\\
    222243[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm008/rho2d_Atm008.gif 2d density]
    223244[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm008/rho2dv1e6_Atm008.gif 2d density and velocity]\\
     245DESCRIPTION: Ambient medium becomes unstable after about 1 dynamical time.
    224246
    225247'''d) Fixed profile outside sphere hydro BCs, Multipole expansion Poisson BCs, Velocity damping with $\tau=1\times10^5$ s'''\\
     
    230252[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp022/rho1d_Damp022.gif 1d density]
    231253[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp022/P1d_Damp022.gif 1d pressure]\\
     254DESCRIPTION: Square-shaped morphology and velocities reduced from case III(a), but still begins to be unstable after a few dynamical times.
    232255
    233256(ii) Isothermal hydrostatic atmosphere (Atm009)\\
     
    235258[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm009/rho2dv1e6_Atm009.gif 2d density and velocity (10x smaller arrows)]
    236259[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm009/rho2dv1e6_extended_Atm009.gif 2d density and velocity (extended color bar, smaler arrows)]\\
     260DESCRIPTION: Rather steady and preserves shape rather well at ~1 dynamical time.
    237261
    238262'''e) Reflecting hydro BCs, Multipole expansion Poisson BCs, Velocity damping with $\tau=1\times10^5$ s'''\\
    239 
    240263(i) Constant ambient pressure and density (Damp029, 6.9 hrs on bluehive standard 120 cores)\\
    241264[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp029/rho2d_Damp029.gif 2d density]
    242265[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Damp029/rho2dv1e7_Damp029.gif 2d density and velocity]\\
     266DESCRIPTION: Square-shaped morphology and velocities reduced from case III(a), but still begins to be unstable after a few dynamical times.
    243267
    244268(ii) Isothermal hydrostatic atmosphere (Atm012, 11.5 hrs on bluehive standard, 120 cores)\\
     
    247271[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm012/rho2d_extended_Atm012.gif 2d density (extended color bar)]
    248272[http://www.pas.rochester.edu/~lchamandy/Graphics/RGB/Post-sink_particle/Post-modified_Lane_Emden/Atm012/rho2dv1e6_extended_Atm012.gif 2d density and velocity (extended color bar, 10x smaller arrows)]\\
     273DESCRIPTION: Preserves shape rather well, but instabilities build up in ambient medium and propagate inward after a few dynamical times.
    249274
    250275'''Comparison with (a) on left and (b) on right'''\\