General Data
    • 04 Aug 2022
    • 1 Minute to read

    General Data


    Article summary

    The general data are specified at the top of the data file. The first two lines contain a title and the value of the ramp function. The ramp function is an integer value, 'ntramp', which specifies the number of timesteps which cover the boundary condition ramp function at the start of a flood tide in an estuary simulation. This has the effect of smoothing out sharp changes in the boundary concentration. For a fuller description of 'ntramp', please refer to the BOUNDARY section of this manual (see Boundary Data. An example of the structure of this section of the file is shown in Figure 1.

    WaterQualityimagesimage096.jpg

    Figure 1 Example of the General Data section of the 1D Water Quality datafile

    For the description of how various pollutants can be included into your Water Quality simulation, please refer to the Paragraph 3 and Figure 3 in the page Preparing a Water Quality Datafile.

    Datafile Format (initial data block)

    Line 1                                        Title (a)
    Line 2                                        ntramp (i10)

    Where:

    Title = Brief description of water quality simulation

    ntramp (i10) = Number of timesteps considered to cover a ramp function at the start of a flood tide. Enter zero for non-tidal systems

    These two lines must be followed by data describing the longitudinal dispersion coefficient.For details of the dispersion coefficient data see the DIFFUSION section.

    For details of the water quality processes, boundary data and source data formats see the full descriptions later in this chapter.


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