Question

Air at atmospheric pressure and at 300K flows with a velocity of 1.5m/s over a flat plate. The transition from laminar to turbulent flow is assumed to take place at a Reynolds number of 5x10'. Determine the distance from the leading edge of the plate at which transition occurs.

Answer 1

Answer:3.47 m

Step-by-step explanation:

Given

Temperature(T)=300 K

velocity(v)=1.5 m/s

At 300 K

`\mu =1.846 * 10^(-5) Pa-s`

`\rho =1.77 kg/m^3`

And reynold's number is given by

`Re.=(\rho v\time x)/(\mu )`

`5* 10^5=(1.77* 1.5* x)/(1.846* 10^(-5))`

`x=(5* 10^5* 1.846* 10^(-5))/(1.77* 1.5)`

x=3.47 m