Resolution Study: Input Revision 3
About
The primary reason behind this revision of the input files was to align resolutions with Todd for better comparison on data. The other parameters of the case remain:
- - Two sets of setup: a steel casing senario, pure PBX disk
- - 5 resolutions: 0.25 mm, 0.5 mm, 0.67 mm, 1.0 mm, 1.25 mm
- - 2 dimensional simulation
- - A disk 6 cm diameter disk in a 12.8 cm2 domain
- - Symmetry on the +/-z
- - Dirichlet boundary conditions on +/-x and +/-y
Plan/Todo/Suspect Problems
- Current Status
- 02/23/09
- First run of Surface Area graphs online x
- Finished running Surface Area Runs, working on interpeting data x
- Fisxing broken site links
- 02/21/09
- Running Surface Area Runs
- Fixing broken site links
- Momentum Test
- With these runs, the momentum exchange coefficient between gas, steel, and PBX was 1e15
- Runs lacking a steel case have fairly erratic behavior
- Large momentum exchange coefficient causes particles to fly off rather quickly, pulled by the high pressure gas. These isolated particles cause (presumably) an overestimate of the surface area, and thus a higher burn rate (also more erratic).
- Solution: I'm currently running cases without steel containers with momentum exchange 1e5 (because Chuck has statistics to compare with)
- Current Status and results can be found here (when I've got some results).
- -Surface Area Calculation
- -Todd is skeptical about the accuracy of the surface area calculations, and their convergence(or lackthereof)
- -Proposed solution: Run several different resolutions with 8-16 small cylinders (2D)
- -Current status and results can be found here.
Results
No Steel Casing
Overall
0.25 mm Case
0.50 mm Case
0.67 mm Case
1.0 mm Case
- Burn Rate: Cumulative, 000, 001, 002, 003, 004, 005, 006
- Surface Area: Cumulative, 000, 001, 002, 003, 004, 005, 006
- Mass Burned: Cumulative, 000, 001, 002, 003, 004, 005, 006
- Surface Area and Mass Burned: Cumulative, 000, 001, 002, 003, 004, 005, 006
- Surface Area and Pressure: Cumulative, 000, 001, 002, 003, 004, 005, 006
- Image of End of Restart: Current*, 000*, 001*, 002*, 003*, 004*, 005*, 006*
- Movie of Current State*
- Input File
1.25 mm Case
- Burn Rate: Cumulative, 000, 001
- Surface Area: Cumulative, 000, 001
- Mass Burned: Cumulative, 000, 001
- Surface Area and Mass Burned: Cumulative, 000, 001
- Surface Area and Pressure: Cumulative, 000, 001
- Image of End of Restart: Current*, 000*
- Movie of Current State*
- Input File
Steel Casing
Overall
0.25 mm Case
0.50 mm Case
0.67 mm Case
1.0 mm Case
1.25 mm Case
Misc.
* these images and movies have temperature on the top colormap and particle mass on the bottom colormap
All file linked to by this page can be found in this directory.
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Contact: josuf dot the dot uf at gmail
Updated: 03/03/09
Created: 02/17/09
