Fluid Dynamics Lecture III
, Rotational Motion
• When the fluid particle rotate about their own axes,
then it is called rotational motion
• Mathematically
curl q 0 ( say )
: vorticity vector
q : fluid velocity at time t
iˆ ˆj kˆ
curl q
x y z
u v w
w v u w v u
x , y , z , ,
y z z x x y
• Find vorticity vector components for two
dimensional fluid motion?
, Rotational Motion
• When the fluid particle rotate about their own axes,
then it is called rotational motion
• Mathematically
curl q 0 ( say )
: vorticity vector
q : fluid velocity at time t
iˆ ˆj kˆ
curl q
x y z
u v w
w v u w v u
x , y , z , ,
y z z x x y
• Find vorticity vector components for two
dimensional fluid motion?
