Accession Number:

ADA175506

Title:

An Approach to the Analysis of the Modification of Surface Waves by Depth-Varying Current Fields.

Descriptive Note:

Final rept. Dec 85-Nov 86,

Corporate Author:

ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCE MIAMI FL

Personal Author(s):

Report Date:

1986-11-01

Pagination or Media Count:

23.0

Abstract:

An approach is developed for analyzing the modifications of surface waves by depth-varying current fields. The approach is based on an approximate dispersion relation for wave-current interactions derived from the governing equations of the problem the inviscid Orr-Sommerfeld equations coupled with the wave kinematicwave action formulation of surface wave propagation. The approach is particularly useful in that it focuses directly on the wave parameters of interest the amplitude, frequency, direction, and wavelength of the wave and eliminate the requirement to solve the inviscid Orr-Sommerfeld equations to derive these parameters. The validity of the approach is demonstrated by comparisons with exact Orr-Sommerfeld solutions. Keywords Wave-current interactions.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE