申論題

1. Write the definition and physical meaning of the following numbers. And, prove that these are dimensionless groups. (i) Reynold number (Re), (ii) Nusselt number (Nu), (iii) Prandtl number (Pr), (iv) Peclet number (Pe), (v) Grashof number (Gr), (vi) Schmidt number (Sc), and (vii) Lewis number(Le) (28 分)