Direct Simulation Monte Carlo

Direct Simulation Monte Carlo

Major instructor: Nicolas G. Hadjiconstantinou

Codes

Web applet uses DSMC to simulate flow of gas in a tube past a block.
GNU FORTRAN code uses DSMC to calcluate the viscosity of a gas. See the README file for instructions and use: dsmc.tar.gz. To untar, unzip, and run the program, follow these instructions:
- If on a Sun machine, type
```
athena% add gnu
athena% gzcat dsmc.tar.gz | tar xvf -
athena% cd dsmc
athena% make
athena% ./mc2
```
- If on a Linux machine, type
```
athena% tar xvzf dsmc.tar.gz
athena% cd dsmc
athena% make
athena% ./mc2
```
If you change the program files, be sure to type make again to recompile the program. If you change platforms, type
```
athena% make clean
athena% make
```
to recompile for your new platform. If you wish to plot some of the average quantities, you can start MATLAB in this directory and type
```
>> plotdsmc
```
at the MATLAB prompt to produce some graphs. These are not required for the homework, but may be useful for diagnostics.
Note that there are some .m files included in the directory. do_run.m has some typical input values, and will run the program for you if you would like.

References

The latter of these references is extremely useful in completing homework set 2, problem 4.

Alexander, Francis J. and Garcia, Alejandro L. "The Direct Simulation Monte Carlo Method." Computers in Physics v11 n 6, 1997.
Garcia, Alejandro L. Numerical Methods for Physics. Cpt 11. Prentice Hall, NJ. 2000.