Good day everybody!!!!
I look forward someone can help me.
I developed a numerical model in FEFLOW (transient), which simulates the infiltration of rainfall in a natural slope, considering unsaturated soil (Van Genuchtem modified Model) and discrete features. It was monitored three points (see Fig.1). The convergence of the simulation was good (dt_max=1d), however, as the time-step size (max) was reduced to a smaller value (like 0.5, 0.1, 0.05 or 0.01), the pressure history curves showed more oscillations. The aim of simulating the model with a smaller time step size was for obtaining a smoother curve, in place of that, it was obtained a curve with more oscillations.
I am attaching all results (pressure history for three points, which are indicated in the Fig.2,3 and 4)
Kind Regards,
Hugo Ninanya
