# --------------------------------------------------------------
# CGHB.py
# Version: 1.0.0
# Author: Zhenjiang Wu
# Description: Set COMUS Model With GHB Package.
# --------------------------------------------------------------
import os
import sys
from typing import Union, Dict
import numpy as np
import pycomus
from pycomus.Utils import BoundaryCheck
from pycomus.Utils.CONSTANTS import GHB_PKG_NAME, GHB_FILE_NAME
[docs]
class ComusGhb:
"""
Initialize the COMUS Model with the General-Head Boundary(GHB) package.
Attributes:
----------------------------
model:
The COMUS model to which the GHB package will be applied.
Cond:
The hydraulic conductivity coefficient between the general head and the aquifer (L²/T).
Shead:
The general head value at the beginning of the stress period (L).
Ehead:
The general head value at the end of the stress period (L).
Methods:
--------
__init__(self, model: pycomus.ComusModel, cond: Union[int, float, Dict[int, Union[int, float, np.ndarray]]],
shead: Union[int, float, Dict[int, Union[int, float, np.ndarray]]],
ehead: Union[int, float, Dict[int, Union[int, float, np.ndarray]]])
Initialize the COMUS Model with the General-Head Boundary(GHB) package.
load(cls, model, ghb_params_file: str)
Load parameters from a GHB.in file and create a ComusGhb instance.
write_file(self, folder_path: str)
Typically used as an internal function but can also be called directly, it outputs the `pycomus.ComusGhb`
module to the specified path as <GHB.in>.
Returns:
--------
instance: pycomus.ComusGhb
COMUS General-Head Boundary(GHB) Params Object.
Example:
--------
>>> import pycomus
>>> model1 = pycomus.ComusModel(model_name="test")
>>> ghbPkg = pycomus.ComusGhb(model1, cond={0: 1}, shead=1, ehead=2)
"""
def __init__(self, model: pycomus.ComusModel, cond: Union[int, float, Dict[int, Union[int, float, np.ndarray]]],
shead: Union[int, float, Dict[int, Union[int, float, np.ndarray]]],
ehead: Union[int, float, Dict[int, Union[int, float, np.ndarray]]]):
BoundaryCheck.check_bnd_queue(model)
cms_dis = BoundaryCheck.get_cms_pars(model)
cms_period = BoundaryCheck.get_period(model)
self._num_lyr = cms_dis.num_lyr
self._num_row = cms_dis.num_row
self._num_col = cms_dis.num_col
self._period = cms_period.period
self.cond = BoundaryCheck.CheckValueGtZero(cond, "Cond", self._period, self._num_lyr,
self._num_row, self._num_col)
self.shead = BoundaryCheck.CheckValueFormat(shead, "Shead", self._period, self._num_lyr,
self._num_row, self._num_col)
self.ehead = BoundaryCheck.CheckValueFormat(ehead, "Ehead", self._period, self._num_lyr,
self._num_row, self._num_col)
if sorted(self.cond.keys()) != sorted(self.shead.keys()) != sorted(self.ehead.keys()):
raise ValueError("The stress periods for the 'Cond' parameter,'Ehead' and 'Shead' should be the same.")
self._model = model
model.package[GHB_PKG_NAME] = self
[docs]
@classmethod
def load(cls, model, ghb_params_file: str):
"""
Load parameters from a GHB.in file and create a ComusGhb instance.
Parameters:
--------
model: pycomus.ComusModel
COMUS Model Object.
ghb_params_file: str
Grid GHB Params File Path(GHB.in).
Returns:
--------
instance: pycomus.ComusGhb
COMUS General-Head Boundary(GHB) Params Object.
Example:
--------
>>> import pycomus
>>> model1 = pycomus.ComusModel(model_name="test")
>>> ghbPackage = pycomus.ComusGhb.load(model1, "./InputFiles/DRN.in")
"""
BoundaryCheck.check_bnd_queue(model)
cms_dis = BoundaryCheck.get_cms_pars(model)
num_lyr = cms_dis.num_lyr
num_row = cms_dis.num_row
num_col = cms_dis.num_col
with open(ghb_params_file, 'r') as file:
lines = file.readlines()
if len(lines[0].strip().split()) != 7:
raise ValueError("The General-Head Boundary(GHB) Period Attribute file header should have 7 fields.")
data = lines[1].strip().split()
if len(data) != 7:
raise ValueError("The General-Head Boundary(GHB) Period Attribute file data line should have 7 values.")
lines = lines[1:]
cond = {}
shead = {}
ehead = {}
for line in lines:
line = line.strip().split()
period = int(line[0]) - 1
lyr = int(line[1]) - 1
row = int(line[2]) - 1
col = int(line[3]) - 1
if period not in cond:
shead[period] = np.zeros((num_lyr, num_row, num_col))
ehead[period] = np.zeros((num_lyr, num_row, num_col))
cond[period] = np.zeros((num_lyr, num_row, num_col))
shead[period][lyr, row, col] = float(line[4])
ehead[period][lyr, row, col] = float(line[5])
cond[period][lyr, row, col] = float(line[6])
instance = cls(model, cond=cond, shead=shead, ehead=ehead)
return instance
def __str__(self):
res = f"{GHB_PKG_NAME}:\n"
for period, value in self.cond.items():
res += f" Period : {period}\n Value Shape : {value.shape}\n"
return res
[docs]
def write_file(self, folder_path: str):
"""
Typically used as an internal function but can also be called directly, it outputs the `pycomus.ComusGhb`
module to the specified path as <GHB.in>.
:param folder_path: Output folder path.
"""
if not self._write_file_test(folder_path):
os.remove(os.path.join(folder_path, GHB_FILE_NAME))
sys.exit()
def _write_file_test(self, folder_path: str) -> bool:
flag = 0
period_len = len(self._period)
with open(os.path.join(folder_path, GHB_FILE_NAME), "w") as file:
file.write("IPER ILYR IROW ICOL SHEAD EHEAD COND\n")
periods = sorted(self.cond.keys())
for period in periods:
if not BoundaryCheck.check_period(period, period_len):
return False
cond_value = self.cond[period]
shead_value = self.shead[period]
ehead_value = self.ehead[period]
if not BoundaryCheck.check_dict_zero(cond_value, "Cond", self._num_lyr, self._num_row, self._num_col):
return False
for layer in range(self._num_lyr):
lyr_type: int = self._model.layers[layer].lyr_type
for row in range(self._num_row):
for col in range(self._num_col):
if cond_value[layer, row, col] > 0:
if lyr_type in (1, 3):
bot = self._model.layers[layer].grid_cells[row][col].bot
if shead_value[layer, row, col] <= bot or ehead_value[layer, row, col] <= bot:
print(f"The hydraulic head at grid cell ({layer},{row},{col}) cannot be lower "
f"than or equal to the bottom elevation of the grid cell.")
return False
file.write(
f"{period + 1} {layer + 1} {row + 1} {col + 1} {shead_value[layer, row, col]} "
f"{ehead_value[layer, row, col]} {cond_value[layer, row, col]}\n")
if period == 0:
flag += 1
if flag == 0 and period == 0:
file.write("1 1 1 1 0 1E+100 1E+100\n")
return True