An Improved Finite Difference Method to Evaluate Heat Transfer in Fuel Pins with Eccentrically Placed Pellets Academic Article uri icon


  • A method is presented to calculate two-dimensional temperature profiles in fuel pins with eccentrically placed fuel pellets. This is implemented in a finite difference program. By requiring continuity of the radial and angular components of the heat flux vector across the gas gap, an angular-dependent thermal conductivity is derived to account for the eccentric condition. The method is compared with another approach in which the fuel pellet surface is approximated by a rachet boundary. Similar results for temperatures were obtained from both calculations, but the modeled conductivity method presented here showed significant gains in computing time and storage requirements.

published proceedings

  • Nuclear Technology

author list (cited authors)

  • McNair, G. W., & Peddicord, K. L.

citation count

  • 2

complete list of authors

  • McNair, GW||Peddicord, KL

publication date

  • October 1978
  • January 1, 1978 11:11 AM