FLOW AROUND A CYLINDER - istiarto

– 3.39 –
U, U∞ [m/s] sectional average velocity.
U∞ [m/s] average velocity in the approach flow, U∞ = 0.45 [m/s].
u, v, w [m/s] Cartesian velocity components.
u ��,
v ��,
w �� [m/s] Cartesian fluctuating velocity components.
ur, u� [m/s] cylindrical (radial and tangential) velocity components.
u � [m/s] shear velocity.
u �,� [m/s] shear velocity in the approach flow, u �,� = 0.45 [m/s].
V,V � ,V h [m/s] velocity, velocity projection on a plane �., velocity projection on a
horizontal plane.
Vt [m/s] velocity component parallel to the bed at a distance �n.
x, y, z [m] Cartesian coordinate directions.
� [°] angular direction.
� [°] deviation angle of the v-velocity component with respect to the
plane of symmetry.
�n [m] normal distance from the bed.
� [–] Karman constant, � = 0.4.
�, �t [m 2 /s] kinematic viscosity, turbulent eddy viscosity.
� [1/s] vorticity.
� [°] slope of the inclined scour bed.
� [°] angular direction.
� [kg/m 3 ] density of water.
����o [N/m 2 ] shear stress, bed shear-stress.
� [m] rotated x-axis.