How Does Heat Flux Affect Steel's Internal Temperature After 30 Seconds?

[parrim2]

1. A large block of steel [k=45 W/m°C, alpha=1.4x10^-5 m2/s] is initially at a uniform temperature of 35 C. The surface is suddenly exposed to a constant heat flux of 3.2x10^5 W/m2 Find the temperature at a depth of 2.5 cm after 30 seconds has elapsed.

 

[Mapes]

How have you tried to solve the problem?

 

[parrim2]

no i didn't know how to solve it without the convection coefficient

 

[Mapes]

Then I'd recommend checking your lecture notes, textbook, handouts, or a reference like Incropera and DeWitt's Fundamentals of Heat and Mass Transfer for an equation relating temperature to heat flux for semi-infinite media.