Chapter 1, Problem 1.15P

Interpretation Introduction

Interpretation: The Nusselt number is the function of Reynolds number and Prandtl number is to be proved.

Concept introduction: Nusselt number is the ratio of convective heat transfer to the conductive heat transfer.

It is represented by $\text{Nu}$ .

  $\text{Nu}\text{=}\frac{hD}{k}$ .

Prandtl number is the ratio of kinematic viscosity to the thermal diffusivity.

It is denoted by $\mathrm{Pr}$ .

  $\mathrm{Pr}=\frac{\mu c_p}{k}$ .

Multiply the both sides of given equation by $\frac{DG}{\mu }$ and left hand side by $\frac{k}{k}$ .