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5.2. ADVECTIVE-DIFFUSIVE REACTOR COMPARTMENT
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5.2 Advective-Diusive Reactor Compartment
The example of this section demonstrates how to calculate the transport of a substance
through an advective-diusive reactor.
The main AQUASIM feature introduced in this section is the advective-diusive reactor
compartment.
Problem
Part A: Calculate the break-through curve of a rectangular tracer pulse of the form
(arbitrary units)
time t inow concentration C
0.00
0
0.01
1
1.00
1
1.01
0
through a column with a cross-sectional area of 1 unit, a length of 1 unit, a
discharge of 1 unit, and a dispersion coecient of 0.1 units (arbitrary units).
Compare the inow concentration given above with the concentration time series
at the end of the column.
Part B: Dene a samling device with a volume of 0.01 units and link it advectively to
the outlet of the column. In addition to the concentration time series dened
above, plot the concentration time series at the start position of the column and
within the sampling device. Discuss the dierences in the plotted curves.