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*PLIFT
Data format:
An arbitrary number of cards with 4 values each
IP COEF ITABLE VECH
Status :
Optional
Purpose :
To define local lift coefficients
Restrictions :
The node IP and table ITABLE must have been previously defined. The total number of nodes where drag and lift coefficients are introduced may not exceed MAXBOU which is a version dependent parameter.
Details :
| Parameter | Description |
|---|---|
| IP | Identification number of the node where the coefficient has to be applied |
| COEF | Lift coefficient ( factor of \(\|UH\|^2\) for the calculation of the local drag force , where \(UH\) is the relative fluid velocity projected on the horizontal plane ). |
| ITABLE | Reference table for the possible fluid velocity dependence description of the lift coefficient COEF. For constant lift coefficient set ITABLE=0 and VECH is ignored |
| VECH | Velocity step of the description table ITABLE (see note) |
Note
- For a velocity ( (I-1)*VECH < < I*VECH ) the lift force applied to node IP will be interpolated between COEF * TABLE(I-1,ITABLE) and COEF * TABLE(I,ITABLE)
If COEF is positive the lift force is directed upwards.
- Lift forces are defined only in global axis
