Time series
In an external keyword-based text file, parameters can be specified in order to execute a dynamic simulation. Keywords are used to control how flow, power and supply pipe temperature vary over time. The time scale is in the range minutes to 24 hours. The calculation is executed as a series of stationary calculations in which the results of every calculation execute input data for the next calculation, overlaid with the changes indicated by the keywords for the time series. The interval between calculations is given when calculation begins (see the section Calculation module). Typically, nodes are allocated consumption type 1 and the relevant production plants are allocated node types 2 – 10.
In general, the keyword normally begins with a * which is placed in column 1 (at the far left of the row). Then comes data, always indented by at least 1 position in the row. Decimal points (.) must be used as decimal separators. This keyword is ended with the / symbol.
