PAK-P   

A Finite Element 2D and 3D Program for Analysis of Groundwater flow

• Linear and nonlinear analysis: steady, time-dependent problems
• Saturated/unsaturated flow
• Position of free surface
• Boundary Conditions: prescribed head, pressure, seepage face
• Infiltration: special tretman of rain
• Special algorithm for nodes at seepage face
• Material characteristics: Conductivity as function for unsaturated soil region
• Dynamics: Rapid reservoir filling and drawdown analysis
• Seepage forces: Calculation of nodal forces due to fluid flow, generated in the format for PAK-S program