4-Dimensional Table Interpolation with Modelica
The Modelica Association, The Modelica Association, (3--4 may 2008)Abstract
The steady-state model for a solar field contains a large number of equations including conditional statements. For a yearly analysis the operational state (on duty, off duty) of the solar field may change from one time instant to the other. Due to the strongly varying boundary conditions a simulation run without convergence problems is not likely. For this reason a lookup-table model is designed to calculate the five output variables of the solar field depending on the four input variables. The interpolation model is based on the existing MODELICA model for 2D-interpolation and can be used for table interpolation tasks independent of the technical application. The structure of the model and a method for the automatic generation of the required interpolation data from the complex solar field model is described.