Ausbreitung eines Abwasserauftriebstrahls in einem See Verifikation eines mathematischen Modells in der Natur

The object in view—namely the recording of the trajectory of a buoyant jet in stratified lake and the comparison of this trajectory with that predicted by a mathematical model developed at the VAW—was achieved to a great extent. The field experiments were performed in the summer of 1981 in Lake Hallwil. The comparison shows that, given the same conditions, the results obtained from the mathematical model agree with the measured quantities. Although the final layer where the jet levels appears to be at a greater depth than predicted, the horizontal and vertical spreading of the jet and its dilution accord well with the theory.