Accession Number : ADA569708

Title :   NMLONG: Numerical Model to Simulate Wave Transformation and Longshore Current

Descriptive Note : Technical note

Corporate Author : COASTAL ENGINEERING RESEARCH CENTER VICKSBURG MS

Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD= ADA569708

Report Date : Dec 1991

Pagination or Media Count : 9

Abstract : NMLONG is a PC-based model that calculates wave height, wave angle, mean water surface, and longshore current over an irregular bottom profile that can include longshore bars. The program includes features such as self-contained data entry, default values of model parameters, error trapping, on-line help, and graphics. The major assumptions in NMLONG are longshore homogeneity (straight and parallel bottom contours) and linear wave theory. Potential applications of NMLONG include estimating the distribution and magnitude of sediment or pollutant transport, estimating wave overtopping and wave forces, and preliminary structure design (e.g., length and placement of groins or breakwaters). The model parameters can be quickly changed for sensitivity analysis. NMLONG is useful for planning studies where funding and data limitations prevent use of two-dimensional models.

Descriptors :   *MATHEMATICAL MODELS , *OCEAN WAVES , *TRANSFORMATIONS , ANGLES , BREAKWATERS , CONTOURS , DATA PROCESSING , DEPTH , DISTRIBUTION , EMPLACEMENT , ERRORS , GRAPHICS , GROINS(STRUCTURES) , HEIGHT , HOMOGENEITY , LENGTH , LIMITATIONS , LINEARITY , MEAN , MODELS , OCEAN BOTTOM , OCEAN CURRENTS , ONLINE SYSTEMS , PARALLEL ORIENTATION , PARAMETERS , PLANNING , POLLUTANTS , PROFILES , RAYLEIGH WAVES , SEDIMENTS , SELF CONTAINED , SENSITIVITY , SHORES , TRANSPORT , TWO DIMENSIONAL , VALUE

Subject Categories : Physical and Dynamic Oceanography
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE