Reference / Input deck / model / fluid zones / disc
disc
type: disc
Actuator disc fluid zone.
thrust coefficientdisc areatip speed ratioreference densityu refReference Velocitycontrollerrequired›geometryrequired›discretisationrequired›modelrequired›namerequiredreference planereference pointdefinitionupdate frequencyrotation directionrequiredverboseadvanced
thrust coefficient
float·not set by default
Thrust coefficient
disc area
float·not set by default·> 0
Disc area
tip speed ratio
float·not set by default
Tip speed ratio
reference density
float·not set by default·> 0
Reference density
verboseadvanced
bool·default False
Print turbine model and controller details at load
u ref Reference Velocity
float·not set by default·> 0
Reference velocity (m/s) override for the BET force calculation — used instead of the sampled freestream, e.g. for hover cases where the freestream is near zero
namerequired
str·required
Zone name
Used inhornsrev
reference plane
bool·default False
Use reference plane
Used inhornsrev
reference point
vector (3 floats)·not set by default
Reference point
Used inhornsrev
definition
str·not set by default·'definition' is required when the fluid zone is an actuator disc. A disc selects its cells with a closed-surface VTP file., and only applies then
Closed-surface VTP file that selects the disc's cells
Used inhornsrev
Guidance: Choosing a fluid-zone model →update frequency
int·default 1
Update frequency
Used inhornsrev
rotation directionrequired
str·required
Rotation direction
Used inhornsrev