Extension and Validation of UNDEX Analysis Methods

Abstract

Numerous features have been added to both the IFSAS and Trident codes. Both codes were integrated into a single solver for 3D fluid-structure interaction simulations. A multiple material model using a mixed-cell approach was implemented in the IFSAS code, and validated against experimental data. Adaptive grid schemes for underwater shock and bubble analysis, hydrostatic pressure and airwater/seafloor boundaries, underwater explosion profiles, and fluid-backed shapes were also implemented. The improvements made to the Trident program include upgrading the translators between Trident and USA/CFA Version 5, automating the clipping of the fluid element meshes at the waterline, creating a link to the IFSAS code in the UNDEX shell program, and an extension of capabilities for analysing the response of equipment mounts to UNDEX loading.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2004
Accession Number
ADA437463

Entities

People

  • L. Donahue

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • C Programming Language
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programming
  • Experimental Data
  • Explosions
  • Explosives
  • Fluid Dynamics
  • Fluid Mechanics
  • Hydrostatic Pressure
  • Materials
  • Materials Science
  • Pressure Gradients
  • Simulations
  • Three Dimensional
  • Two Dimensional
  • Underwater Explosions

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Computer Science.
  • Underwater engineering and Marine Technology.