Questions from Thermal Fluid Science

Q: Consider a potato being baked in an oven that is maintained at

Consider a potato being baked in an oven that is maintained at a constant temperature. The temperature of the potato is observed to rise by 5°C during the first minute. Will the temperature rise durin...

Q: We often cut a watermelon in half and put it into the

We often cut a watermelon in half and put it into the freezer to cool it quickly. But usually we forget to check on it and end up having a watermelon with a frozen layer on top. To avoid this potentia...

Q: Thick slabs of stainless steel (k = 14.9 W

Thick slabs of stainless steel (k = 14.9 W/m⋅K and α = 3.95 × 10−6 m2/s) and copper (k = 401 W/m⋅K and α...

Q: A barefooted person whose feet are at 32°C steps on

A barefooted person whose feet are at 32°C steps on a large aluminum block at 20°C. Treating both the feet and the aluminum block as semi-infinite solids, determine the contact surface temperature. Wh...

Q: What is the product solution method? How is it used to

What is the product solution method? How is it used to determine the transient temperature distribution in a two dimensional system?

Q: How is the product solution used to determine the variation of temperature

How is the product solution used to determine the variation of temperature with time and position in three-dimensional systems?

Q: A short cylinder initially at a uniform temperature Ti is subjected to

A short cylinder initially at a uniform temperature Ti is subjected to convection from all of its surfaces to a medium at temperature T∞. Explain how you can determine the temperature of the midpoint...

Q: Consider a short cylinder whose top and bottom surfaces are insulated.

Consider a short cylinder whose top and bottom surfaces are insulated. The cylinder is initially at a uniform temperature Ti and is subjected to convection from its side surface to a medium at tempera...

Q: A homeowner is considering these heating systems for heating his house:

A homeowner is considering these heating systems for heating his house: Electric resistance heating with $0.12/kWh and 1 kWh = 3600 kJ, gas heating with $1.24/therm and 1 therm = 105,500 kJ, and oil h...

Q: Consider a cubic block whose sides are 5 cm long and a

Consider a cubic block whose sides are 5 cm long and a cylindrical block whose height and diameter are also 5 cm. Both blocks are initially at 20°C and are made of granite (k = 2.5 W/m&acir...