Lift and Drag report

Use the Lift and Drag type of Report simulation object to generate a report on lift and drag forces on surfaces. The report makes it easy to identify lift and drag vectors that you can isolate for flight applications. Because the lift and drag vectors do not correspond to the model's global coordinate system, you must define a lift and drag coordinate system for each Lift and Drag type of Report simulation object.

The Lift Drag table is generated in the [simulation name]-[solution name].GroupReport.htm and GroupReport.csv files. The table lists:

• The lift force direction and magnitude, L, and lift coefficient, CL denoted by LIFT-X, LIFT-Y, LIFT-Z, LIFT-Mag., and LIFT-Coef.

• The drag force direction and magnitude, D, and drag coefficient, CD denoted by DRAG-X, DRAG-Y, DRAG-Z, DRAG-Mag., and DRAG-Coef.

• The side force direction and magnitude, S, and side coefficient, CS denoted by SIDE-X, SIDE-Y, SIDE-Z, SIDE-Mag., and SIDE-Coef.

• The pitching moment direction and magnitude, MS, and pitch coefficient, CP denoted by PITCH-X, PITCH-Y, PITCH-Z, PITCH-Mag., and PITCH-Coef.

• The rolling moment direction and magnitude, MD, and roll coefficient, CR denoted by ROLL-X, ROLL-Y, ROLL-Z, ROLL-Mag., and ROLL-Coef.

• The yawing moment direction and magnitude, ML, and yaw coefficient, CY denoted by YAW-X, YAW-Y, YAW-Z, YAW-Mag., and YAW-Coef.

• The center of pressure defined by its X, Y, and Z component in the absolute coordinate system denoted by CP-X, CP-Y, and CP-Z

Note:

The coefficients are only calculated and written to the report file when you select the Calculate Coefficients check box and you define the following characteristic dimensions:

• Planiform or Projected Area, A

• Length, l

• Approach Velocity, V

• Reference Density, ρ

The coefficients are calculated as follows:

Example:

This example shows a partial report for a solution that includes a Lift and Drag type Report simulation objects named Lift Drag Report. The tables display the data for only the first two time steps.

Group	Time	LIFT-X	LIFT-Y	LIFT-Z	LIFT-Mag.	LIFT-Coef.	DRAG-X	DRAG-Y	DRAG-Z	DRAG-Mag.	DRAG-Coef.
Lift Drag Report	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00
Lift Drag Report	5.00E-02	0.00E+00	1.00E+00	0.00E+00	3.15E-06	5.22E+06	-1.00E+00	0.00E+00	0.00E+00	-2.85E-02	4.72E+10

SIDE-X	SIDE-Y	SIDE-Z	SIDE-Mag.	SIDE-Coef.	PITCH-X	PITCH-Y	PITCH-Z	PITCH-Mag.	PITCH-Coef.
0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00
0.00E+00	0.00E+00	1.00E+00	-1.15E-03	1.90E+09	0.00E+00	0.00E+00	1.00E+00	-4.72E-03	7.82E+12

ROLL-X	ROLL-Y	ROLL-Z	ROLL-Mag.	ROLL-Coef.	YAW-X	YAW-Y	YAW-Z	YAW-Mag.	YAW-Coef.	CP-X	CP-Y	CP-Z
0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00	0.00E+00
-1.00E+00	0.00E+00	0.00E+00	1.05E-05	1.75E+10	0.00E+00	1.00E+00	0.00E+00	8.20E-04	1.36E+12	1.13E-03	1.62E-01	2.87E-02

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