[tomp1993]

Hi all,
I am trying to simulate an engine nacelle with an actuator disk propellor in very slow external flow, but with a fairly large pressure jump across the disk.

In my results i am seeing no flow through the disk and a very large 'separation' or recirculation zone behind the disk, making it seem like the disk is being modelled as a solid surface.



In my mesh, i have the upwind (suction) side of the prop disk called 'PROP-UP' and the downwind (pressure) side called 'PROP-DOWN'.
in my configuration file, i have used the options:
ACTDISK_TYPE= VARIABLES_JUMP
ACTDISK_DOUBLE_SURFACE= YES
MARKER_ACTDISK= ( PROPDISK-DOWN, PROPDISK-UP, 2500, 0.0, 0.0, 2500, 0.0, 0.0 )



Here, i have specified the pressure jump in Pa instead of PSF since i chose SI units for the simulation.
I have also tried running the simulation with down and up in the opposite positions in MARKER_ACTDISK to see if i had the actdisk pushing air the wrong way but got more or less the same result.
I am using version 6.2.0 falcon.
Any help understanding why this is happening would be very much appreciated.

[jdp810]

Have you solved it? I am interested in the problem