Question

Biot number and Nusselt numbers are given by (Here LC is characteristic length, KS = Thermal conductivity for solid, Kf = Thermal conductivity of fluid)

• A. $\frac{hL_C}{K_f}$ and $\frac{hL_C}{K_S}$ respectively
• B. $\frac{hK_f}{L_C}$ and $\frac{hK_S}{L_C}$ respectively
• C. $\frac{hL_C}{K_S}$ and $\frac{hL_C}{K_f}$ respectively
• D. $\frac{hK_S}{L_C}$ and $\frac{hK_f}{L_C}$ respectively

Answer 1

Answer: (C)

$\frac{hL_C}{K_S}$ and $\frac{hL_C}{K_f}$ respectively

Answer 2

The correct option is (C): $\frac{hL_C}{K_S}$ and $\frac{hL_C}{K_f}$ respectively