Transient mass transfer from an isothermal vertical flat plate (Q759599)

Transient mass transfer from a vertical, isothermal flat plate arising from buoyancy forces created by a concentration gradient is investigated assuming that all the fluid properties are constant except for the concentration-dependent body force. The solution is dependent on two parameters, namely, the Prandtl number, Pr, and the Schmidt number, Sc. An analytical solution is presented which is valid at small values of time and this solution is extended to larger values of time by using a modified Crank-Nicolson scheme.