Heat and Mass Transfer

In mass transfer operations, the Chilton-Colburn $j_D$ factor for mass transfer is defined as:

Options:

• (A) $j_D = \frac{k_c}{v_{\infty}} (Sc)^{2/3} = St_m (Sc)^{2/3}$
• (B) $j_D = \frac{k_c}{v_{\infty}} (Sc)^{1/3}$
• (C) $j_D = Sh \cdot Sc \cdot Re$
• (D) $j_D = \frac{h}{\rho C_p v_{\infty}}$