Concentration of Caco3 in water flow on leaned flat surfaces with rain channels

  1. 1. The problem statement, all variables and given/known data

    On flat, leaned, surfaces, there are channels (rillenkarren), which are made by dissolution by rainwater (http://mafija.fmf.uni-lj.si/seminar/files/2005_2006/rillenkarren.pdf - not very important). They are 2-3 cm wide and around 0.5 m long. The formation is not yet known.

    Calculate how the concentration of calcium carbonate changes in the flow of the
    rainwater while it slides in a narrow layer on the stone.

    The homework is a part of basic mathematical physics course. So many simplifications have to be made and all the approximations have to be taken into account.
    Partial differential equation don't count.
     
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