Water Jet‐Induced Circulation in Channel. III: Comparison with Aeration

Abstract

Circulation and mixing of lakes and reservoirs resulting from air plumes brings a simultaneous buildup of dissolved oxygen. The same kind of circulation, but without direct oxygen addition, can be achieved with water jets which can, in addition, be set at any orientation. Measurements of the velocity profiles and circulation for water injection through a linear manifold in a channel are presented here and compared with those for aeration‐induced circulation. In particular, the velocity profiles above the manifold set at the channel bottom, lateral surface flow profiles, the extent of the circulation, and the influence of manifold position are described. The results are similar to those for aeration in most respects. For water‐injection rates to