Numerical Simulation of Ice Accretion on Cables,

Abstract

Samples of ice accretions collected on cables of overhead transmission lines have shown evidence of twisting of the cable during icing. A method is presented to simulate numerically in two dimensions the accretion on a cable of a known torsional rigidity. The surface is approximated by one dimensional isoparametric quadratic elements. For each time step, the change in shape is calculated at each node from the droplet velocities; the surface is then interpolated to find the ice weight by integration; the equilibrium angle of rotation is found and finally the rotation of the shape is done numerically. Results of a numerical simulation for different torsional rigidities is presented. A larger rigidity makes the accretion shape more elliptical whereas it becomes more circular for a smaller rigidity. Results also indicate that twisting of the cable has a significant effect on the accretion shape obtained but has almost no influence on the accretion rate. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1983
Accession Number
ADP001672

Entities

People

  • Pierre Mccomber

Organizations

  • UniversitĂ© du QuĂ©bec

Tags

DTIC Thesaurus Topics

  • Motion
  • New Hampshire
  • Physical Properties
  • Rigidity
  • Rotation
  • Shape
  • Simulations
  • Transmission Lines
  • Workshops

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Polar and Arctic Studies