Unsteady tubular reactors—time variable flow and inlet conditions

Unsteady flow in a tubular reactor with inlet concentration of reactant that depends on time and position is studied.It is shown that the coefficients which arise in the expression for the axial flux are different from those which occur in the dispersion model when heterogeneous reactions occur. Therefore a new inlet boundary condition expression is derived. This inlet condition is used to solve for the steady state reactant concentration distribution.