This paper presents the application of a weakly compressible smoothed particle hydrodynamics model to study plane jets propagating into a still ambient and into a flow field of regular waves. The present study includes a comparative investigation of the main fluid mechanics characteristics in cases of jet discharged either in still water or transversally to regular wave trains characterized by different periods. Concerning jets in a wave environment, the present study shows the existence of the following three different regions of the jet-wave field starting from the nozzle in the intermediate water: the nearest region to the nozzle where the jet motion dominates the wave motion; the intermediate region, where the horizontal velocity component of wave motion dominates the jet centreline velocity decay; and the nearest region to the free surface where the wave period dominates the jet motion. The present study shows the differences found numerically between each flow region.

Numerical investigation of the behaviour of jets in a wave environment / De Padova, Diana; Mossa, Michele; Sibilla, Stefano. - In: JOURNAL OF HYDRAULIC RESEARCH. - ISSN 0022-1686. - STAMPA. - 58:4(2020), pp. 618-627. [10.1080/00221686.2019.1647886]

Numerical investigation of the behaviour of jets in a wave environment

De Padova, Diana;Mossa, Michele;
2020-01-01

Abstract

This paper presents the application of a weakly compressible smoothed particle hydrodynamics model to study plane jets propagating into a still ambient and into a flow field of regular waves. The present study includes a comparative investigation of the main fluid mechanics characteristics in cases of jet discharged either in still water or transversally to regular wave trains characterized by different periods. Concerning jets in a wave environment, the present study shows the existence of the following three different regions of the jet-wave field starting from the nozzle in the intermediate water: the nearest region to the nozzle where the jet motion dominates the wave motion; the intermediate region, where the horizontal velocity component of wave motion dominates the jet centreline velocity decay; and the nearest region to the free surface where the wave period dominates the jet motion. The present study shows the differences found numerically between each flow region.
2020
Numerical investigation of the behaviour of jets in a wave environment / De Padova, Diana; Mossa, Michele; Sibilla, Stefano. - In: JOURNAL OF HYDRAULIC RESEARCH. - ISSN 0022-1686. - STAMPA. - 58:4(2020), pp. 618-627. [10.1080/00221686.2019.1647886]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/181730
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