Simulation of permeable pavement apparently no functioning
I simulated LID control of type permeable pavement setting the exfiltration rate (f3 – storage layer) to zero and without drain. When looking at the detailed report file, i found the follwing problems: when the sand and storage layers became saturated, there was no increase in the pavement level and the values of the total inflow, surface infiltration and pavement percolation remained the same (non-zero values) until the end of the simulation. In addition, the continuity error of the surface runoff results greater than 20%, even reducing the wet time step. The same behavior occurs whenever these two layers saturate. Why does it happens?
Another question: in the column header “pavement level”, in the detailed report file, the unit is mm but the calculated values appear to be feet. What is right?