Chemical Engineering, Mass Transfer, Transport Phenomena.
of fluid. Eq. 1–4 — Molar flux. If we have the diffusion of A in B, the equations 1–2 and 1–3 give us: Eq. 1–5 But we know that: Eq. 1–6 Then we can write: Eq. 1–7 And simplifying: Eq. 1–8 Eq. 1–9 Eq. 1–10 We have the equation: Eq. 1–11 Comparing 1–1 and 1–11 we see: Eq. 1–12 Rearranging we have