A cylindrical, stainless steel rod of an aircraft landing gear system is manufactured with a diani ter of 10 For better mechanical properties the rod is thermally treated raising its temperature to a uniform, steady value of 500°C, before letting it cool down in a large encloseure where the air temperature is 20°C. A fan blows room air in a controlled manner at 3 m/s in normal direction to the axis of the rod

a) Sketch the configuration.

b) Calculate the initial heat transfer rate under only convection efects

e) If the rod surface emissivity is 0.85, the surrounding is in thermal equilibrium with the room air, ealeulate the initial heat transfer rate under only radiation effects

d) What is the total heat transfer rate at initiation of eooling?

e) List the assumptions you might have used