DragForce_AirFoil
Procedure DragForce_airfoil returns the drag force on an air foil of infinite length
Inputs
Fluid$ - the name of any fluid in the EES data base. Fluid$ may be a string constant or a string variable.
T - temperature in the defined unit system [F,C,R,K]
P - pressure in the defined unit system [Pa,kPa,bar,MPa,psia,atm]
v - free stream fluid velocity in [m/s, ft/min]
H - maximum width of the airfoil in [m or ft]
L - length of the airfoil in [m or ft]
Outputs
F_d\L - drag force per unit length [N/m or lbf/ft]
C_d - drag coefficient {optional}
Re - Reynolds number {optional}
This procedure calls function DragCoefficient_AirFoil to obtain the drag coefficient.
Example:
$UnitSystem SI C kPa
Fluid$='Air'
T=25 [C]
P=Po#
V=100 [m/s]
H=0.05 [m]
L=0.45 [m]
CALL DragForce_AirFoil(Fluid$,T,P,v,H,L:F_d\L,C_d,Re)
{Solution:
C_d=0.01178
F_d\L=3.488 [N/m]
Re=320200
}