Version 125 (modified by 10 years ago) ( diff ) | ,
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High Res MHD Colliding Flows
Here is the page that consists of our diagnostics and figures for the paper: CollidingFlowsFigures
Initial conditions:
Beta | 10, everywhere |
Number density | 1cm-3, everywhere |
Flow diameter | 40 pc |
Mach of flows | 1.5 |
Velocity | 136 (cu) inside flows, 0 outside |
B field | Field runs parallel to flows, everywhere in box |
B pressure (gauss) | (B2/2)*Bscale = | =
B-mag | Bx = 31.40 (cu), B constant everywhere in box |
Sound Speed | 90.66 (cu), constant everywhere in box |
Pressure | 4931 (cu), ~constant everywhere in box |
Temp | 4931 (cu), n=1 |
Xmu (mean molecular weight) | 1.27 |
EOS | ideal gas |
gamma | 5/3 |
cooling curve | modified II |
mintemp | 1 |
Questions: Field strength is B*Bscale?
Scales:
velscale | 8091.24708 |
timescale | !381360279481384.188 |
bscale | 0.!416530471377859306E-07 |
nscale | 1 |
lscale | 0.!308568024999999590E+19 = 1pc |
scalegrav | 0.!204668643805330057E-01 |
pscale | 0.!138065029999999951E-15 |
tempscale | 1 |
Scale Defs
5 Production Runs:
Beta | Shear Angle | Purpose | Final time | Final Frame |
10 | 0 | Compare with Jonathan's work | 27 Myr | 273 |
10 | 15 | Compare with Christina's work | " " | " |
10 | 30 | " " | " " | " |
10 | 60 | " " | complete out to 32.5 Myr | 328 |
1 | 60 | Compare a strong field | 20 Myr | 200 |
For orientation, here is an image that shows the flows and tilted interface,
TableView of Column Density Maps
Beta 1, Shear 60 | Beta 10, Shear 60 | Shear 30 | Shear 15 | No Shear | |
down-the-barrel (sight along the flow) | |||||
movies | b1s60cdm1.gif | b10s60cdm1.gif | b10s30cdm1.gif | b10s15cdm1.gif | b10noshearcdm1.gif |
down-x (normal angle to flow, colliding from top and bottom) | |||||
movies | b1s60cdm2.gif | b10s60cdm2.gif | b10s30cdm2.gif | b10s15cdm2.gif | b10noshearcdm2.gif |
down-y (normal angle to flow, colliding from left and rt.) | |||||
movies | b1s60cdm3.gif | b10s60cdm3.gif | b10s30cdm3.gif | b10s15cdm3.gif | b10noshearcdm3.gif |
CDM Movies by run
B10, Shear 0 | |
movies | B10_0_vistacdm.gif |
B10, Shear 15 | |
movies | b10s15_galaxy_cdm.gif |
B10, Shear 30 | |
movies | b10s30_galaxy_cdm.gif |
B10, Shear 60 | |
movies | b10s60_galaxy_cdm.gif |
B1, Shear 60 | |
movies | b1s60_galaxy_cdm.gif |
Sink Formation
Sink Formation
Comparing sink formation for different runs, and for the high vs low resolution runs. As expected, low res runs produce more sinks. Both resolution runs don't produce sinks in the strong field/shear case. The no shear case wasn't run in low resolution also, possibly misleading in plot.
Interesting how the high and low resolution runs take on opposite trends here,
Same high res data in tabular form:
Beta 10, Shear 60 | Shear 30 | Shear 15 | No Shear | |
No. sinks by 27 Myr: | 0 | 1 | 1 | 4 (1 more sink between 20&27 Myr) |
First sink forms at frame: | — | 138 | 188 | 111 |
Time (Myr): | — | 13.62 | 18 | 11 |
For two levels of refinement:
Beta 1, Shear 60 | Beta 10, Shear 60 | Shear 30 | Shear 15 | No Shear | |
No. sinks by 20 Myr: | 0 | 0 | 0 | 4 | 4 |
First sink forms at frame: | — | — | — | 124 | 122 |
Time (Myr): | — | — | — | 12.238 | 12.09 |
Here is a movie showing the S30 case down the barrel and down y (left 2 columns) and S15 down y in right column, since I found it interesting that the low res S30 case didn't make a sink.
Resolution Studies
Resolution Studies:
Was thinking of doing a convergence study for the Shear 60 case so I could see if there was a convergence effect for the different field strengths?
Something like 4 little resolution tests out to frame 50:
Beta | Shear Angle | maxlevel | Status |
10 | 60 | 3 | complete |
10 | 60 | 4 | gives error |
10 | 60 | 6 | complete |
1 | 60 | 3 | complete |
1 | 60 | 4 | gives error |
1 | 60 | 6 | complete |
Given the maxlevel = 4 is giving an error, we ran our lower maxlevel out to 3. Also ran 2 convergence runs on the Beta = 10, Shear 15 case to compensate:
Beta | Shear Angle | maxlevel | Status |
10 | 15 | 4 | complete |
10 | 15 | 6 | complete |
Attachments (66)
- downz_10B150050.png (74.1 KB ) - added by 10 years ago.
- downy0050.png (74.4 KB ) - added by 10 years ago.
- downx0050.png (127.5 KB ) - added by 10 years ago.
- downz_10B15.gif (23.3 MB ) - added by 10 years ago.
- downy10B15.gif (22.8 MB ) - added by 10 years ago.
- downx_10B15.gif (31.3 MB ) - added by 10 years ago.
- newdowny0050.png (68.3 KB ) - added by 10 years ago.
- box_orientation.png (75.2 KB ) - added by 10 years ago.
- b1s60cdm1.gif (19.3 MB ) - added by 10 years ago.
- b1s60cdm10200.png (170.7 KB ) - added by 10 years ago.
- b1s60cdm2.gif (10.1 MB ) - added by 10 years ago.
- b1s60cdm20200.png (66.3 KB ) - added by 10 years ago.
- b1s60cdm3.gif (10.7 MB ) - added by 10 years ago.
- b1s60cdm30200.png (80.2 KB ) - added by 10 years ago.
- b10noshearcdm1.gif (35.8 MB ) - added by 10 years ago.
- b10noshearcdm10200.png (313.0 KB ) - added by 10 years ago.
- b10noshearcdm2.gif (27.2 MB ) - added by 10 years ago.
- b10noshearcdm20200.png (240.4 KB ) - added by 10 years ago.
- b10noshearcdm3.gif (28.0 MB ) - added by 10 years ago.
- b10noshearcdm30200.png (246.5 KB ) - added by 10 years ago.
- b10s15cdm1.gif (35.9 MB ) - added by 10 years ago.
- b10s15cdm10200.png (328.8 KB ) - added by 10 years ago.
- b10s15cdm2.gif (27.9 MB ) - added by 10 years ago.
- b10s15cdm20200.png (258.7 KB ) - added by 10 years ago.
- b10s15cdm3.gif (28.9 MB ) - added by 10 years ago.
- b10s15cdm30200.png (259.1 KB ) - added by 10 years ago.
- b10s30cdm1.gif (27.9 MB ) - added by 10 years ago.
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- b10s30cdm2.gif (9.5 MB ) - added by 10 years ago.
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- b10s30cdm3.gif (10.9 MB ) - added by 10 years ago.
- b10s30cdm30200.png (86.6 KB ) - added by 10 years ago.
- b10s60cdm1.gif (24.1 MB ) - added by 10 years ago.
- b10s60cdm10200.png (226.3 KB ) - added by 10 years ago.
- b10s60cdm2.gif (11.0 MB ) - added by 10 years ago.
- b10s60cdm20200.png (79.8 KB ) - added by 10 years ago.
- b10s60cdm3.gif (12.4 MB ) - added by 10 years ago.
- b10s60cdm30200.png (98.2 KB ) - added by 10 years ago.
- b1s60cdm10simple.png (197.3 KB ) - added by 10 years ago.
- b1s60cdm20simple.png (54.0 KB ) - added by 10 years ago.
- b1s60cdm30simple.png (72.9 KB ) - added by 10 years ago.
- b10noshearcdm10simple.png (373.7 KB ) - added by 10 years ago.
- b10noshearcdm20simple.png (284.5 KB ) - added by 10 years ago.
- b10noshearcdm30simple.png (290.5 KB ) - added by 10 years ago.
- b10s15cdm10simple.png (393.7 KB ) - added by 10 years ago.
- b10s15cdm20simple.png (306.9 KB ) - added by 10 years ago.
- b10s15cdm30simple.png (306.0 KB ) - added by 10 years ago.
- b10s30cdm10simple.png (343.3 KB ) - added by 10 years ago.
- b10s30cdm20simple.png (60.5 KB ) - added by 10 years ago.
- b10s30cdm30simple.png (81.9 KB ) - added by 10 years ago.
- b10s60cdm10simple.png (266.0 KB ) - added by 10 years ago.
- b10s60cdm20simple.png (73.3 KB ) - added by 10 years ago.
- b10s60cdm30simple.png (97.4 KB ) - added by 10 years ago.
- numbersinks_highres.png (15.6 KB ) - added by 10 years ago.
- time_sinks_highres.png (15.2 KB ) - added by 10 years ago.
- B10_0_vista_cdm_200.png (656.5 KB ) - added by 10 years ago.
- B10_0_vistacdm.gif (31.5 MB ) - added by 10 years ago.
- compare30withS15_lowres.gif (20.4 MB ) - added by 10 years ago.
- b1s60_galaxy_cdm.gif (9.3 MB ) - added by 10 years ago.
- b10s15_galaxy_cdm.gif (31.6 MB ) - added by 10 years ago.
- b10s30_galaxy_cdm.gif (10.9 MB ) - added by 10 years ago.
- b10s60_galaxy_cdm.gif (10.5 MB ) - added by 10 years ago.
- b1s60_galaxy_cdm_200.png (70.4 KB ) - added by 10 years ago.
- b10s15_galaxy_cdm_200.png (303.0 KB ) - added by 10 years ago.
- b10s30_galaxy_cdm_200.png (94.9 KB ) - added by 10 years ago.
- b10s60_galaxy_cdm_200.png (91.3 KB ) - added by 10 years ago.