EFFICIENT SIMULATION OF PERIODIC CYCLED REACTOR OPERATION

The numerical simulation of catalytic reactor with periodic flow rever sal generally requires a great deal of computing time, since its dynam ic behavior is characterized by steep local gradients moving along the coordinate axis and cyclic transients. This paper discusses the use o f adaptive grid methods and demonstrates that the moving spline colloc ation method presents better characteristics for efficient adaptation of the mesh-point grid to the travelling reaction front than other ada ptive grid methods and that a periodic integration method can speed up the dynamic simulation of the cyclic transient process significantly.