YouTube-simulations/README.md
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2021-07-19 18:05:00 +02:00

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### Tool to create videos of particles or waves in different 2D domains.
Created by **Nils Berglund** and optimized by **Marco Mancini**
C code for videos on YouTube Channel https://www.youtube.com/c/NilsBerglund
We plan to add a list of parameter values used in specific simulations later on.
There are two groups of 4 files:
### Simulations of classical particles in billiards.
1. **global_particles.c**: global variables and parameters
2. **sub_part_billiard.c**: drawing/computation routines common to particle_billiard and drop_billiard
3. **particle_billiard.c**: simulation of a collection of non-interacting particles in a billiard
4. **drop_billiard.c**: simulation of an expanding front of particles
- Create subfolders 'tif_part', 'tif_drop'
- Customize constants at beginning of .c file
- Compile with
gcc -o particle_billiard particle_billiard.c-O3 -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut
gcc -o drop_billiard drop_billiard.c-O3 -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut
- Generate movie with
ffmpeg -i part.%05d.tif -vcodec libx264 part.mp4
### Simulations of wave equation, heat equation and Schrodinger equation.
1. **global_pdes.c**: global variables and parameters
2. **sub_wave.c**: drawing/computation routines common to wave_billiard, heat and schrodinger
3. **wave_billiard.c**: simulation of the (linear) wave equation
4. **heat.c**: simulation of the heat equation, with optional drawing of gradient field lines
5. **schrodinger.c**: simulation of the Schrodinger equation
- Create subfolders 'tif_wave', 'tif_heat', 'tif_schrod'
- Customize constants at beginning of .c file
- Compile with
gcc -o wave_billiard wave_billiard.c -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut -O3 -fopenmp
gcc -o heat heat.c -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut -O3 -fopenmp
gcc -o schrodinger schrodinger.c -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut -O3 -fopenmp
- Generate movie with
ffmpeg -i wave.%05d.tif -vcodec libx264 wave.mp4