CFD Online Discussion Forums - ACRi ANSWER analogs

Hello,

For my school project i need very basic 2d room airflow and gas concentration simulations, i can use some opensource software and my own GUI wrapper for it, so i'm looking for something very simple and easy to script.

So far i like ANSWER package for it's nice syntax - all you have to do is put a couple of lines and it just works :)

Code:

/====   PROBLEM IDENTIFICATION             ====/

TITLe test

USER Dmitry

COOR X MIN 0 MAX +20

COOR Y MIN 0 MAX 12

GRID which 42 by 26

LOCA ID=LLC COOR(0, 0) to (3, 3)

LOCA ID=ULC COOR(0, 9) to (3, 12)

LOCA ID=MB1 COOR(6, 0) to (9, 5)

BLOCK ID=LLC

BLOCK ID=ULC

BLOCK ID=MB1

LOCA ID=INLET COOR(0, 5) to (1, 8)

LOCA ID=OUTLET COOR(19, 2) to (20, 6)

LOCA ID=SOURCE COOR(5, 5) to (6, 6)

OUTL at X+ SubRegion ID=OUTLET;1.0

BOUN AT ID=INLET X- U=0.5

INLE AT ID=INLET X-

WALL at everywhere unless otherwise specified

DENS 0.86

VISC 0.01

SCHMIDT NUMBER FOR C=1

SOUR C ID=SOURCE CONSTANT 0.01

SAVE U V SPEED C 'indoor.save' FORMatted

CONV C 1.0E-6 MAX 5 ITERATIONS

SOLVe STEADY Nmax=500

/====   NATURE OF FLOW                     ====/

LAMInar flow

END

So my question - is there anything like answer but free?
Or maybe there's something designed specifically to my task (2d room flow)

thanks