Numerical investigation of the behaviour of jets in a wave environment. Issue 4 (6th June 2020)

• Record Type: Journal Article
• Authors: De Padova, Diana; Mossa, Michele; Sibilla, Stefano
• Is Part Of: Journal of hydraulic research. Volume 58:Issue 4(2020)
• Page Start: 618
• Page End: 627
• Publication Date: 2020-06-06
• Subjects: Jets -- jet–wave interaction -- physical modelling -- smoothed particle hydrodynamics models -- wave; Hydraulics -- Research -- Periodicals; Hydraulic engineering -- Periodicals; Hydraulic engineering; Electronic journals; Periodicals; 621.2
• DOI: 10.1080/00221686.2019.1647886
• Languages: English
• ISSNs: 0022-1686

Abstract

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.