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Prandtl number is dimensionless number, denoted by Npr.Npr = Cp (viscosity)/(thermal conductivity)

Cp - specific heat, J per ( Kg Kelvin)

viscosity in poise (gm per( cm sec))

thermal conductivity in Watt per (meter kelvin)

Prandtl number is important in heat transfer.

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Q: What is prandtl number and what is its significance?
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