Aerated jets and pressure fluctuation in plunge pools

Proceedings of the Seventh International Conference on Hydroscience and Engineering, Philadelphia, PA, September 2006. http://hdl.handle.net/1860/732In this paper are presented the principal results of a theoretical analysis and revaluation of experimental data corresponding to different investigation about mean and fluctuating dynamic pressure in plunge pools. These results are discussed and compared with the case of circular jets and it is demonstrated that knowledge of the falling jet process is of crucial importance for the characterization of the downstream physical phenomena. Thus, observations and formulae are proposed in the following subjects: initial jet turbulence intensity Tu, jet break-up length Lb, impingement jet thickness Bj, mean dynamic pressure coefficient Cp and fluctuating dynamic pressure coefficient C´p. Some examples are provided to demonstrate how the findings may be used in practice and also like a verification of the proposed methodology