The theme of the website which you can enter below is actually the computer simulation of quantum mechanics, but you can also find computer simulations of the Von Karman vortex street and the Kelvin-Helmholtz Instability. To run these simulations you need either PKWare's PKZIP or Microsoft QBasic.
If you have PKZIP available, then click here. Download KARMAN.ZIP, unzip it and run KARMAN.EXE to see a computer simulation of the Von Karman vortex street. We recommend a fast computer (80486 DX or better), but you will see that this is a 'virtual-time simulation' which adjusts itself to your computer speed over a wide range of speeds.
If you click here you will find a list of QBasic programs and also instructions on installing QBasic as a viewer. QBasic is bundled in with MS-DOS 5.0 and later versions of MS-DOS. Once you know how to install QBasic, then click on the page 'Second Front' to find the Von Karman vortex street simulation.