Theoretical and experimental investigation of resonant flow over submerged objects

ORAL

Abstract

We consier the wave motion generated by a moving submerged object in a rectilnear 18 meter wave tank experimentally. Depending on the Froude number, several different regimes are studied. Precursor solitary waves periodically generated and moving ahead of the obstacle are seen to co-exist with hydraulic jumps with capillary wave breaking. Mode sorting is observed after the obstacle is stopped. The data are collected with wave gauges, PIV, and co-moving video tracking of the interface. The effects of pre-existing wave currents on the propagation of the wave train is also examined and demonstrate novel deconstructive interference. Long wave models as well as direct numerical simulations will be presented time permitting.

*NSF Grant Nos.:DMS-1910824; and ONR Grant No: ONR N00014-18-1-2490

–

Presenters

  • Roberto Camassa

    • University of North Carolina at Chapel Hill

Authors

  • Roberto Camassa

    • University of North Carolina at Chapel Hill

  • Lingyun Ding

    • University of North Carolina at Chapel Hill

  • Russell Engle

    • University of North Carolina at Chapel Hill

  • Kelli L Hendrickson

    • Massachusetts Institute of Technology MIT

  • Robert Hunt

    • University of North Carolina at Chapel H
    • University of North Carolina at Chapel Hill

  • Jeremy Marzuola

    • University of North Carolina

  • Richard M McLaughlin

    • University of North Carolina at Chapel Hill
    • University of North Carolina at Chapel H

  • Jon Wilkening

    • University of Califoria Berkeley