Question

Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the

a.

existence of thermal boundary layer.

b.

temperature gradient produced due to density difference

c.

buoyancy of the bubbles produced at active nucleation site.

d.

none of these.

Answer: (d).none of these.

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Q. Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the

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