Accession Number:

ADA239856

Title:

Dredging Research Program: NMLONG: Numerical Model for Simulating the Longshore Current. Report 1. Model Development and Tests.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s):

Report Date:

1991-06-01

Pagination or Media Count:

165.0

Abstract:

This report presents the mathematical formulation and verification of a numerical model that simulates wave transformation and longshore current over a bar and trough beach profile. The model is intended for application on projects involving dredged material berms and other situations where a bar and trough topography prevents use of simple analytic or numerical solutions that are restricted to a uniformly sloping beach. The model is called NMLONG, an acronym that stands for Numerical Model of the Longshore current. The model incorporates all known features of the wave and longshore current system that appear in research-type engineering models run on mainframe computer systems. These features include wave and wind driving, wave breaking and reformation over multiple bar and trough profiles, and lateral mixing. The model also allows choice of linear or quadratic bottom friction and regular or random wave heights as options. The main restriction of the model is longshore uniformity of the waves and beach topography.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE