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Biot number signifies the ratio of
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- convective resistance in the fluid to conductive resistance in the solid
- conductive resistance in the solid to convective resistance in the fluid
- inertia force to viscous force in the fluid
- buoyancy force to viscous force in the fluid
Correct Option: B
Biot - number:
Biot number provides a way to compare the conduction resistance within a solid body to the convection resistance external to the body (offered by the surrounding fluid) for heat transfer:
| Bi = | ; s = | ||
| k | Surface area |
Where ‘s’ is a characteristic dimension of the solid
‘h’ is convective heat transfer coefficient
‘k’ is thermal conductivity of the body.
