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 : https://apps.dtic.mil/dtic/tr/fulltext/u2/a569708.pdf


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