Hace poco salio el plugin para trabajar con fluidos importados en Realflow.
Noticia Original:
New Houdini plugin now available! Plugin created and maintained by Next Limit in-house. For Houdini production builds: versions 9.5.379, 10.295 and 10.374. Available for Windows 64 and Linux 64.
http://www.realflow.com/index.htm