For a two dimensional flow field, the stream function y

For a two dimensional flow field, the stream function y is given as ψ = 3 (y² − x²).
2

The magnitude of discharge occurring between the stream lines passing through points (0, 3) and (3, 4) is

Q = ψ₁ – ψ₂

=	3	(9 − 0) −	3	(16 − 9)
	2		2

=	27	− 24 +	7	= 3 units
	2		2

For a two dimensional flow field, the stream function y is given as ψ =	3	(y² − x²).
	2