A velocity field is given by (V=ui+vj), where (u=x+y) and (v=xy³+16).
(a) Is the flow steady or unsteady? Why? (b) How many stagnation points (V=(0,0)) exist in the flow field? Find their coordinates.
a) The flow is steady because the velocity components are independent of time.
b) The flow is unsteady because the velocity components vary with time.
c) The flow is steady because the velocity components are independent of position.
d) The flow is unsteady because the velocity components vary with position.