What are the various dimensionless numbers that characterize the natural convection heat transfer?________ (only write the dimensionless numbers)
1) Grashof number
2) Rayleigh number
Grashof number is defined as the ratio of buoyant force to viscous force.
Rayleigh number is the product of Grashof number and prandtl number
These dimensionless numbers are used in natural convection heat transfer.
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