GENMIX

GENMIX is the name of a computer code developed in the early 1970s by Professor Brian Spalding at Imperial College, London, and still in occasional use.

It handles two-dimensional, parabolic flows, ie those of high Reynolds and Peclet numbers, from which recirculation is absent.

GENMIX has some historical importance, in that:

• it enabled the Imperial College team which was investigating turbulence models to make rapid progress in comparing the implications of the various hypotheses with experimental data on jets, wakes and boundary layers;
• it embodied what was (probably) the first-ever self-adaptive computational grid, which enlarged or contracted to cover only the regions of interest (whence its nickname: the Bikini method);
• it incorporated chemical reaction as an option (click here for a lecture which mentions its role in the application of CFD to combustion);
• it can be regarded as a remote ancestor of PHOENICS, which (still alone among the general-purpose computer codes) embodies a parabolic option.

GENMIX made use of the Patankar-Spalding method of analysis, which is fully described in Reference 8 of the above-mentioned lecture.

The source code for the program GENMIX is available here.

• Click here to see some pages from Chapter 5 of the GENMIX book
• Click here to see a glossary of Fortran variables