Texts: The pressure should be relatively symmetrical about the line = 0, so assume the values of pressure are similar for reverse direction (=-20 until -180).
2. H is constant: 60 mm, so pressure head caused by total pressure Po = 3.
4. Fill in the blank to show the one sample calculation.
Table 3: Drag Force Measured By Direct Weighing
Drag Force (gmf) 35 30 25 20 15 10 5
Ho (mm)
Po
ho (mm)
Po (Nm)
Po - po = pU^2 (N/m^2)
60 50 40 30 22 14
10 10 8 4 2 1 1
Table 4: Pressure Distribution around a Cylinder
(deg)
h (mm)
P (N/m^3)
p - po (N/m^3)
Cp Cos
(N/m^2)
0* 20* 40* 60* 80* 100* 120* 140* 160* 180*
60 50 10 -40 -56 -51 -49 -49 -49 -49
Given data:
Diameter of cylinder, d = 12.5 mm
Length of cylinder, L = 48 mm
1 mmH2O = 0.0981 mbar
1 gmf = 98110 N