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Abstract

A new and simple iteration scheme for solving the nonlinear heat conduction in a fuel rod is developed. The method is based on a Newton-Raphson iteration scheme and takes two distinctive characteristics of the problem into account. The result is a scalar Regula Falsi technique which is superior to a relaxation technique. The new iteration scheme has been applied successfully over 2 years in the TRANSURANUS code, analysing several hundred complicated data cases under normal, off-normal and accident conditions. Convergence problems never occurred and the computational costs were significantly reduced.

Additional information

Authors: LASSMANN K JRC KARLSRUHE ESTAB. (GERMANY), JRC KARLSRUHE ESTAB. (GERMANY)
Bibliographic Reference: NUCLEAR ENGINEERING AND DESIGN, VOL. 103 (1987), PP. 211-214
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