Flow and air-entrainment around partially submerged vertical cylinders

Valentin Ageorges (1) , Jorge Peixinho (2) , Gaële Perret (1)

1 LOMC - Laboratoire Ondes et Milieux Complexes
2 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux

In this study, a partially submerged vertical cylinder is moved at constant velocity through water, which is initially at rest. During the motion, the wake behind the cylinder induces free-surface deformation. Eleven cylinders, with diameters from D=1.4 to 16 cm, were tested under two different conditions: (i) constant immersed height h and (ii) constant h/D. The range of translation velocities and diameters are in the regime of turbulent wake with experiments carried out for 45001.2, the drag force varies linearly with Fr.

Domaines: Sciences de l'ingénieur [physics]

Valentin Ageorges, Jorge Peixinho, Gaële Perret. Flow and air-entrainment around partially submerged vertical cylinders. Physical Review Fluids, 2019, 4 (6), pp.Article number 064801. ⟨10.1103/PhysRevFluids.4.064801⟩. ⟨hal-02292362⟩