A short stainless steel cylinder ( D = 8 cm and 2 L = 6 cm) is initially at 327 C. Find the temperature at a location identified as r = D /2 and  = 0 after being suddenly exposed for 3 minutes to air...

A short stainless steel cylinder (D
= 8 cm and 2L
= 6 cm) is initially at 327 C. Find the temperature at a location identified as
r
=
D/2 and
 = 0 after being suddenly exposed for 3 minutes to air at
T_f

= 27 C and a heat transfer coefficient of
h
= 500 W/m·C.

A long stainless steel rod (ρ
= 7900 kg/m³
,
c
= 0.526 kJ/kg·K, and
k
= 17.4 W/m·K) having a diameter of 5 cm, is initially at 200 C when its surface is exposed to an ambient at 300 K with a heat transfer coefficient of 600 W/m²
·K. After 2 min exposure, find: a) the centerline temperature and b) the temperature at a distance of 1 cm from the rod centerline. c) Find the temperature of 10 equallyspaced points inside the rod after 2 min of exposure and plot the results. d) Track the centerline temperature every 5 seconds and plot the results for the 2 minutes of exposure.