• Difference between discharge in ground water flow and hydraulic gradient in flow analysis in Plaxis 2D

    Hi all, In the flow analysis, the cross-section is cut through (2,11) and (5,11) for qy and iy as shown below. This is the homogeneous soil with kx=ky=0.6221 m/day. here q=ki and left side of flow qleft = iyleft * k = 0.2063 * 0.6221 = 0.12834…
  • Hydraulic Gradient

    Hello I want to ask about hydraulic gradient in your tutorial that stability of a dam under rapid drawdown. I realized that i takes big value in phase_1 (rapiddrawdown) at clay core. Is this okey for piping? Can we say that it is unimportant because…
  • Hydraulic gradient increases with mesh density

    Hi everyone! I am currently running a simple 2D groundwater dam model with Plaxis LE and I have found this unexpected behavior when measuring the hydraulic gradient near downstream face: it keeps increasing while triangle elements get smaller and…