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*WAKEDYN

Data format:

One line comprising 14 values followed by one line with NIGR values (if NIGR>0)

A1 A2 A3 A4 IOP NTR NITW NIGR NENR TB TF MAXM MINM DIST
IGR1 ... IGR_NIGR

Purpose :

To define a wake model in group of cylinders

Restriction :

Only available for dynamic analysis

Details :

Parameter Description
A1 first parameter of the model (1.0 for Blevin and Huse)
A2 second parameter (11.088 for Huse, 4.5 for Blevin)
A3 third parameter (gives the lift 0 for Huse, 10.6 for Blevin)
A4 fourth parameter (shift the x-axis, 0 for Blevin, 4 for Huse)
IOP 0 to sum the wake deficit, 1 to sum quadraticaly the wave deficit velocities.
NTR number of fluid strips
NITW number of iterations
NIGR number of groups involved
NENR number of time the flowfield and riser are saved in TECPLOT format
TB in second: first time to save the flowfield (not useful for calculations)
TF is second last time to save the flowfield (not useful for calculations)
MAXM maximum extend of the mesh per strip (not useful for calculations)
MINM minimum extend of the mesh per strip (not useful for calculations)
DIST maximum distance from reference
IGR1 ... IGR_NIGR group number

Note

See theory manual

For the strips definition:

NTR>0, NIGR=0: NTR fluid trips are created between 0 and the maximum depth

NTR>0, NIGR>0: NTR fluid strips are created uniformly along group IGR1

NTR=0, NIGR>0: Fluid strips are created along group IGR1 in the middle of each element of the group