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problem in comsol program
Posted 2014年3月28日 GMT-4 05:01 Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers 0 Replies
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I defined two projects in comsol in 2D for solving richards equation:
first project: simple rectangle that left boundary was defined as pressure head=0.8 and right boundary as pressure head=0.5, the other two angles= zero flux
and then I made a cross section from these two points from 0.8 to 0.5 (attached cross section as picture1).
Second project: simple rectangle that left boundary was defined as step function for the pressure head from zero to 0.8 =0.8 and from 0.8 to 1.4=0, and for the right boundary pressure head was defined from zero to 0.5=0.5 and from 0.5 to 1.4= 0; the two other angles were zero flux.( attached plots for the left and right boundary as left and right boundary)
Expected results= that cross section for second project for pressure head from 0.8 to 0.5 should be the same as first project.(attached as cross section sample)
Comsol results=they are not like each other!!!!
Do you have any idea that what is the problem in comsol?
Thanks in advance for your valuable comments.
Sepideh
Hello Sepideh Ramezani
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