Validation of the SEADYN90 Cable Simulation Model Using a Three- Dimensional Cable Deployment Data Set

Abstract

This report presents data from a full-scale, three-dimensional cable payout test and the corresponding numerical simulations using the SEADYN90 computer model. The experiment, which was conducted at the Atlantic Undersea Test and Evaluation Center (AUTEC), deployed 10 miles of 3/4-inch-diameter cable from a vessel that followed a predetermined course. Ship position, cable payout rate, and current profile were measured, along with 11 cable descent trajectories at predefined intervals along the cable. The measured data were then input into SEADYN90 with minimal simplifications to ensure that modeling errors could be distinguished from input errors. Qualitative and quantitative comparisons between the numerical and measured trajectories were considered excellent when a normal drag coefficient of 2.54 +-0.1 (typical of strumming) was used. The results demonstrate that SEADYN90 is capable of accuretly modeling realistically complex test scenarios with stochastic current profiles, ship velocities, and payout rates, and that the data set is complete and high quality.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA260853

Entities

People

  • Linda Teragouchi
  • Paul Palo

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

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

DTIC Thesaurus Topics

  • Civil Engineering
  • Computers
  • Construction
  • Data Sets
  • Descent Trajectories
  • Engineering
  • Environmental Protection
  • Materials
  • Plastic Explosives
  • Simulations
  • Steady State
  • Strumming
  • Test And Evaluation
  • Test Facilities
  • Three Dimensional
  • Trajectories
  • Underwater Acoustics

Readers

  • Computational Modeling and Simulation
  • Electrical Engineering
  • Marine Hydrodynamics