FOR3D: A Computer Model for Solving the LSS (Lee-Saad-Schultz) Three- Dimensional, Wide Angle Wave Equation

Abstract

A computer model is developed for implementing the Lee-Saad-Schultz (LSS) method for solving the LSS Three-dimensional wide angle wave equation. The model is designed to predict propagation loss in range-, depth-, and azimuthal- dependent ocean environments. Computational speed is favorable since the Lee- Saad-Schultz method requires only solving two tri-diagonal systems of equations for each step marched forward in range. A test problem is included for demonstrating accuracy and the capabilities of the model. The model is written in Fortran for a VAX 11/780 computer. Keywords: Finite difference theory; Numerical methods and Procedures; Underwater acoustics.

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Document Details

Document Type
Technical Report
Publication Date
Aug 14, 1987
Accession Number
ADA186649

Entities

People

  • David I. King
  • Ding Lee
  • George Botseas

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Air Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Fields
  • Acoustic Propagation
  • Acoustic Waves
  • Acoustics
  • Computers
  • Difference Equations
  • Differential Equations
  • Equations
  • Geometry
  • Partial Differential Equations
  • Refractive Index
  • Three Dimensional
  • Underwater Acoustics
  • Wave Equations
  • Wave Propagation
  • Wide Angles

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Computational Modeling and Simulation
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)