%MODE Card

This card is used to describe the calculation mode. It has several options as follow

%MODE Variable Description Available options
LINE 1 MODE Calculation mode FORWARD : Forward Calculation
ADJOINT : Adjoint Calculation
FIXEDSRC : Fixed Source Calculation
BCSEARCH: Critical boron concentration search
RODEJECT : Rod ejection and/or insertion mode (transient problems)

There are some conditions for some calculation modes.

  1. When calculation mode is FIXEDSRC, then the %ESRC card must be present
  2. When calculation mode is BCSEARCH, then the %CBCS OR %XTAB card must be present
  3. When calculation mode is RODEJECT, then the %EJCT card must be present

Example:

! Mode card
%MODE
FORWARD