Convection when plate is hotter that fluid - Heat Transfer

Q.  Below figure shows a natural convection heat transfer on a vertical flat plate surrounded by a fluid.
What is the relation between the upward velocity of the fluid and the distance from the bottom of the plate, when plate is hotter that fluid?
- Published on 12 Aug 15
Natural-convection-heat-transfer-on-a-vertical-flat-plate-surrounded-by-a-fluid.png


a. as the distance from the bottom of the plate increases, the upward velocity of the fluid near the plate surface decreases
b. as the distance from the bottom of the plate increases, the upward velocity of the fluid near the plate surface increases
c. the upward velocity of the fluid near the plate surface is same all over the plate
d. unpredictable

ANSWER: as the distance from the bottom of the plate increases, the upward velocity of the fluid near the plate surface increases

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