Abstract
The flow field of a two-dimensional non-element reactor, which consists of one main flow and multiple branching flows, is numerically investigated. The main flow is flowing steadily with Poiseuille flow pattern, while the branching flow is periodically injected. The flow is stretching and folding by a Poiseuille flow pattern. The periodical injection makes the flow pattern much complicated which enhances the mixing. The magnitude of the stretching, which is defined as an increase in the length of the unit fluid line, increased with increasing the number of the branching flows. In addition, further increase in the magnitude of the stretching is achieved by the phase shift of the injection from multiple branching flow injection
