trnsystor.statement.Solver

class trnsystor.statement.Solver(k=0, rf_min=1, rf_max=1)[source]

SOLVER Statement.

A SOLVER command has been added to TRNSYS to select the computational scheme. The optional SOLVER card allows the user to select one of two algorithms built into TRNSYS to numerically solve the system of algebraic and differential equations.

Initialize object.

Parameters

  • k (int) – the solution algorithm.

  • rf_min (float) – the minimum relaxation factor.

  • rf_max (float) – the maximum relaxation factor.

Note

k is either the integer 0 or 1. If a SOLVER card is not present in the TRNSYS input file, SOLVER 0 is assumed. If k = 0, the SOLVER statement takes two additional parameters, RFmin and RFmax:

The two solution algorithms (k) are:

  • 0: Successive Substitution

  • 1: Powell’s Method