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dc.contributor.authorMoballa, Ben
dc.contributor.authorChern, MJen
dc.contributor.authorAn-Nizhami, Aen
dc.contributor.authorBorthwick, AGLen

The hydrodynamics is studied numerically of a horizontal cylinder undergoing forced in-line oscillation beneath the free surface of otherwise quiescent liquid at low Keulegan-Carpenter and Froude numbers. The direct forcing immersed boundary-smoothed particle hydrodynamics (DFIB-SPH) numerical model uniquely combines two well-established techniques: The direct forcing immersed boundary method and SPH. This facilitates accurate evaluation of the potentially violent free surface motions through SPH and the hydrodynamic force on the solid body using a volume integral. A parameter study is conducted covering a range of Keulegan-Carpenter numbers (KC = 3, 7, and 10) and submergence ratios () at fixed Reynolds number (Re = 100) and Froude number (Fr = 0.35). The flow pattern and transverse force coefficient are found to be affected by the proximity of the cylinder to the free surface. Spectral analysis suggests that free surface wave motions are linked to the transverse force acting on the submerged, oscillating cylinder.

dc.titleDFIB-SPH study of submerged horizontal cylinder oscillated close to the free surface of a viscous liquiden
dc.typeJournal Article
plymouth.journalFluid Dynamics Researchen
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.rights.embargoperiodNot knownen
rioxxterms.typeJournal Article/Reviewen

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