A modified version of the two-dimensional network-of-zones model of macromixing is proposed which seems to give a much closer approximation to the velocity field in agitated liquid. All the radial and axial circulation flows are retained in the network which therefore has a fully matrix structure. The circulation flows are distributed spatially in both dimensions. The cell dimensions vary in space in accordance with the flow distribution. Despite the increased complexity of the model, both the demand for input information and the computing effort are low.