Inductance Scaling of a Helicoil Using ALEGRA

Abstract

The inductance scaling of several helicoil configurations are investigated using the March 2011 release of the Sandia magnetohydrodynamics (MHD) code, ALEGRA. A great majority of the effort is spent ensuring proper convergence of relevant variables for an accurate solution, such as mesh size, resolution, grid biasing, and solver tolerance. For these helicoil geometries, steady-state magnetic diffusion time requires several tens of milliseconds, up to two orders of magnitude greater than that required for coaxial conductors. Inductances are shown to scale quadratically with the number of conductor turns. At moderate to large N, results are in agreement with data provided by Bartkowski and Berning as well inductance calculated for a simple solenoid a function of the number of turns squared. Surprisingly, the gap size between conducting turns had a minor impact on the results.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2013
Accession Number
ADA585012

Entities

People

  • Robert Doney

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Gaps
  • Batch Processing
  • Boundaries
  • Coaxial Cables
  • Computational Science
  • Current Density
  • Department Of Defense
  • Electromagnetic Radiation
  • Geometry
  • Magnetic Fields
  • Materials
  • Military Research
  • Resistance
  • Shell Scripts
  • Simulations
  • Steady State
  • Voltage

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Electrical Engineering
  • Mathematics or Statistics