International Journal of Fluid Dynamics (1997), Vol. 1, Article 3

Volumetric visualization of coherent structure in a low Reynolds number turbulent boundary layer

by C. Delo and A.J. Smits

Table 1 : Turbulent Boundary Layer Specifications

Flow Quantity

Symbol

Definition

Value


Momentum Thickness Reynolds Number


Ue /
701

Downstream Development Reynolds Number
Rex
x Ue /
260,000

Kármán Number
+
/
299

Skin Friction
Cf
w / (1/2 Ue2)
0.0047

Shape Factor
H
* /
1.49

Coles Wake Parameter

1/2 u+max
0.273

Von Karman Constant

-
0.41

Freestream Velocity
Ue
-
229 mm/s

Boundary Layer Thickness

U = 0.99 Ue
26.9 mm

Friction Velocity


11.1 mm/s

Kinematic Viscosity

/
1.00 mm2/s

Displacement Thickness

*


4.55 mm



*/


0.169

Momentum Thickness



3.06 mm



/


0.114