PROBLEM 2

Problem 6.14. Microbubbles that are generated on heated surfaces during subcooled boiling can roll on the

heated surface before departing from the surface. A heated metallic flat plate has a surface temperature of 380

K. Atmospheric water at a far field temperature of 367 K and velocity of 7 m/s flows parallel to the surface.

Consider a microbubble rolling on the surface at a distance of 25 cm from the leading edge of the surface. What

is the maximum diameter of the microbubble in order for it to be completely surrounded by superheated water?

For this microbubble what is the time-average velocity of the surrounding liquid at around the center and top of

the microbubble?