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@ -6,7 +6,7 @@ C code for videos on YouTube Channel https://www.youtube.com/c/NilsBerglund
Parameter values used in specific simulations will be gradually added to file `Parameters.md`, `Parameters_June21.md` and so on. Parameter values used in specific simulations will be gradually added to file `Parameters.md`, `Parameters_June21.md` and so on.
There are two groups of 5 files and 11 files. There are three groups of 5 files, 11 files and 3 files.
In addition the following files handling color schemes have been included: In addition the following files handling color schemes have been included:
1. `hsluv.c`and `hsluv.h` from https://github.com/adammaj1/hsluv-color-gradient 1. `hsluv.c`and `hsluv.h` from https://github.com/adammaj1/hsluv-color-gradient
@ -50,7 +50,7 @@ in the shell before running the program
7. *wave_comparison.c*: comparison of the wave equation in two different domains 7. *wave_comparison.c*: comparison of the wave equation in two different domains
8. *wave_energy.c*: a version of `wave_billiard` plotting the energy profile of the wave 8. *wave_energy.c*: a version of `wave_billiard` plotting the energy profile of the wave
9. *mangrove.c*: a version of `wave_billiard` with additional features to animate mangroves 9. *mangrove.c*: a version of `wave_billiard` with additional features to animate mangroves
10. *heat.c*: simulation of the heat equation, with optional drawing of gradient field lines 10. *heat.c*: simulation of the heat equation, with optional drawing of gradient field lines
11. *schrodinger.c*: simulation of the Schrodinger equation 11. *schrodinger.c*: simulation of the Schrodinger equation
- Create subfolders `tif_wave`, `tif_heat`, `tif_schrod` - Create subfolders `tif_wave`, `tif_heat`, `tif_schrod`
@ -75,10 +75,28 @@ in the shell before running the program
`ffmpeg -i wave.%05d.tif -vcodec libx264 wave.mp4` `ffmpeg -i wave.%05d.tif -vcodec libx264 wave.mp4`
### Molecular dynamics simulations
1. *global_ljones.c*: global variables and parameters
2. *sub_lj.c*: some drawing and initialization routines
3. *lennardjones.c*: simulation of molecular dynamics
- Create subfolders `tif_ljones`
- Customize constants at beginning of .c file
- Compile with
`gcc -o lennardjones lennardjones.c -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut -O3 -fopenmp`
- Generate movie with
`ffmpeg -i lennardjones.%05d.tif -vcodec libx264 lennardjones.mp4`
#### Some references #### #### Some references ####
- Discretizing the wave equation: https://hplgit.github.io/fdm-book/doc/pub/wave/pdf/wave-4print.pdf - Discretizing the wave equation: https://hplgit.github.io/fdm-book/doc/pub/wave/pdf/wave-4print.pdf
- Absorbing boundary conditions: https://hal.archives-ouvertes.fr/hal-01374183 - Absorbing boundary conditions: https://hal.archives-ouvertes.fr/hal-01374183
- Cloaking device: https://www.sciencedirect.com/science/article/pii/S0165212514001759 - Cloaking device: https://www.sciencedirect.com/science/article/pii/S0165212514001759
- Poisson disc sampling: https://bl.ocks.org/mbostock/dbb02448b0f93e4c82c3 - Poisson disc sampling: https://bl.ocks.org/mbostock/dbb02448b0f93e4c82c3
- Thermostat algorithm: https://doi.org/10.1007/s10955-009-9734-0
http://www.maths.warwick.ac.uk/~theil/HL12-3-2009.pdf