Extension and Validation of UNDEX Analysis Methods

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Authors
  1. Donahue, L.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);MARTEC Ltd, Halifax NS (CAN)
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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Keywords
UNDEX;gas bubble dynamics;finite element analysis;IFSAS (Integrated Fluid Structure Analysis System);Fluid-structure interaction;CFD (Computational Fluid Dynamics)
Report Number
DRDC-ATLANTIC-CR-2004-269;MARTEC-TR-04-23 — Contractor Report
Date of publication
01 Dec 2004
Number of Pages
102
DSTKIM No
CA025586
CANDIS No
523319
Format(s):
CD ROM

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