2. Calculation
1. From the airbox (P) and reference point (P$_0$) pressure measurements, calculate the uniform
inlet velocity, U.
2. Applying the equation of continuity find an expression for the free vortex flow constant, C.
You may begin writing down Eqn. 4 and substitute u(r) defined in Eqn. 3.
$Q \cdot U \cdot Area = 2\pi b \int_{r_1}^{r_2} u(r) dr$
$u(r) = \frac{C}{r}$
r$_1$ = 50mm
r$_2$ = 100mm
b = 100mm
