Air at 10 atm and 25°c flows with free stream velocity of 6 m/s over a flat plate at 75°c. deter- mine the heat flux at 0.05 m intervals upto a distance where the reynolds number is 5 x 10^5.

Explanation:

Given that velocity=6 m/s

Temperature of surface=75 °C

Temperature of air=25 °C

Reynolds number =

It means that this is laminar flow.So Nusselt equation given as follows

Now properties of air at mean temperature of 75 °C and 25 °C (50 °C) is taken from standard table

K=0.028 W/m-K,Pr=0.71

And we also know that

Now by putting the values

Nu=406.24

So heat flux q= hΔT

q=227.49  x (75-25)

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

explanation:

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