The maximum velocity of one-dimensional incompressible fully developed viscous flow between two fixed parallel plates,is 6 $m s^{- 1}$ . The mean velocity (in m $s^{- 1}$ ) of the flow is

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Solution

The correct option is C 4
$U_{m a x} = 6 m / s$

Since,

$\frac{U_{m a x}}{U_{m e a n}} = \frac{3}{2}$

$\frac{6}{U_{m e a n}} = \frac{3}{2}$

$U_{m e a n} = 4 m / s$

Points To Remember

In case of flow between two fixed parallel plates.

$\frac{U_{m a x}}{U_{a v g}} = \frac{3}{2}$

In case of flow in the circular pipe,

$\frac{U_{m a x}}{U_{a v g}} = 2$

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The maximum velocity of one-dimensional incompressible fully developed viscous flow between two fixed parallel plates,is 6 ms−1. The mean velocity (in ms−1) of the flow is

The correct option is C 4Umax=6 m/s Since, UmaxUmean=32 6Umean=32 Umean=4 m/s Points To Remember In case of flow between two fixed parallel plates. UmaxUavg=32 In case of flow in the circular pipe, UmaxUavg=2

The maximum velocity of one-dimensional incompressible fully developed viscous flow between two fixed parallel plates,is 6 $m s^{- 1}$ . The mean velocity (in m $s^{- 1}$ ) of the flow is