Introduction of Partial Convergence Idea into Void Iteration for Boiling Water Reactor Computations

A scheme, which initially requires only partial convergence of the source iteration, is introduced into boiling water reactor (BWR) void feedback iterations. By reducing the number of source iterations within the early void iterations where nuclear parameters are uncertain, the entire iterative procedure is accomplished more efficiently, the computer time is reduced, and final convergence is guaranteed. The scheme has proven very successful in conducting BWR fuel management and control rod programming calculations.