# Henry case¶

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 import xarray as xr import pandas as pd import numpy as np import imod import subprocess # Discretization nrow = 1 ncol = 100 nlay = 50 dz = 1.0 dx = 1.0 dy = -dx # scale parameters with discretization qscaled = 0.03 * (dz * abs(dy)) # Fresh water injection with well # Add the arguments as a list, so pandas doesn't complain about having to set # an index. weldata = pd.DataFrame() weldata["x"] = [0.5] weldata["y"] = [0.5] weldata["q"] = [qscaled] # Setup ibound bnd = xr.DataArray( data=np.full((nlay, nrow, ncol), 1.0), coords={ "y": [0.5], "x": np.arange(0.5 * dx, dx * ncol, dx), "layer": np.arange(1, 1 + nlay), "dx": dx, "dy": dy, }, dims=("layer", "y", "x"), ) top1D = xr.DataArray( np.arange(nlay * dz, 0.0, -dz), {"layer": np.arange(1, 1 + nlay)}, ("layer") ) bot = top1D - 1.0 # We define constant head here, after generating the tops, or we'd end up with negative top values bnd[:, :, -1] = -1 # Fill model m = imod.wq.SeawatModel("HenryCase") m["bas"] = imod.wq.BasicFlow(ibound=bnd, top=50.0, bottom=bot, starting_head=1.0) m["lpf"] = imod.wq.LayerPropertyFlow( k_horizontal=10.0, k_vertical=10.0, specific_storage=0.0 ) m["btn"] = imod.wq.BasicTransport( icbund=bnd, starting_concentration=35.0, porosity=0.35 ) m["adv"] = imod.wq.AdvectionTVD(courant=1.0) m["dsp"] = imod.wq.Dispersion(longitudinal=0.1, diffusion_coefficient=1.0e-9) m["vdf"] = imod.wq.VariableDensityFlow(density_concentration_slope=0.71) m["wel"] = imod.wq.Well( id_name="well", x=weldata["x"], y=weldata["y"], rate=weldata["q"] ) m["pcg"] = imod.wq.PreconditionedConjugateGradientSolver( max_iter=150, inner_iter=30, hclose=0.0001, rclose=1.0, relax=0.98, damp=1.0 ) m["gcg"] = imod.wq.GeneralizedConjugateGradientSolver( max_iter=150, inner_iter=30, cclose=1.0e-6, preconditioner="mic", lump_dispersion=True, ) m["oc"] = imod.wq.OutputControl(save_head_idf=True, save_concentration_idf=True) m.time_discretization(times=["2000-01-01", "2001-01-01"]) m.write()