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from __future__ import annotations
import ast
import csv
import math
import re
import subprocess
from pathlib import Path
ROOT = Path("/home/user/Desktop")
CASE = ROOT / "bfs"
U_REF = 10.0
def read(path: Path) -> str:
return path.read_text(encoding="utf-8", errors="ignore")
def named_block(text: str, name: str) -> str:
text = re.sub(r"/\*.*?\*/|//[^\n]*", "", text, flags=re.S)
match = re.search(rf"(?m)^\s*{re.escape(name)}\s*\{{", text)
if not match:
raise ValueError(f"missing block {name}")
start = text.find("{", match.start())
depth = 0
for index in range(start, len(text)):
depth += text[index] == "{"
depth -= text[index] == "}"
if depth == 0:
return text[start + 1 : index]
raise ValueError(f"unterminated block {name}")
def has_entry(block: str, key: str, value: str) -> bool:
return re.search(rf"(?<!\w){re.escape(key)}\s+{value}\s*;", block) is not None
def close(actual: float, expected: float, tolerance: float) -> bool:
return math.isfinite(actual) and abs(actual - expected) <= tolerance
def python_script_is_valid(path: Path, required_fragments: tuple[str, ...]) -> bool:
text = read(path)
try:
tree = ast.parse(text)
except SyntaxError:
return False
return bool(tree.body) and all(fragment in text for fragment in required_fragments)
def log_finished(path: Path) -> bool:
text = read(path)
return "foam fatal" not in text.lower() and text.rstrip().endswith("End")
def patch(text: str, name: str) -> str:
return named_block(named_block(text, "boundaryField"), name)
def field(path: Path, kind: str) -> list:
text = read(path)
header = named_block(text, "FoamFile")
match = re.search(
rf"internalField\s+nonuniform\s+List<{kind}>\s+(\d+)\s*\((.*?)\)\s*;",
text,
re.S,
)
if not match:
raise ValueError(f"missing {kind} field")
if kind == "vector":
values = [
tuple(float(value) for value in item.split())
for item in re.findall(r"\(([^()]+)\)", match.group(2))
]
valid_values = all(
len(value) == 3 and all(math.isfinite(item) for item in value)
for value in values
)
elif kind == "scalar":
values = [float(value) for value in match.group(2).split()]
valid_values = all(math.isfinite(value) for value in values)
else:
raise ValueError(f"unsupported field kind {kind}")
if (
len(values) != int(match.group(1))
or not values
or not valid_values
or not has_entry(header, "format", r"ascii")
or not has_entry(header, "class", rf"vol{kind.capitalize()}Field")
or not has_entry(header, "object", re.escape(path.name))
):
raise ValueError(f"invalid {kind} field")
return values
def separated(velocity: list[tuple[float, float, float]], indices: list[int]) -> bool:
return min(velocity[index][0] for index in indices) < 0.0
def check_case() -> bool:
mesh = read(CASE / "system/blockMeshDict")
velocity = read(CASE / "0/U")
pressure = read(CASE / "0/p")
kinetic = read(CASE / "0/k")
omega = read(CASE / "0/omega")
nut = read(CASE / "0/nut")
physical = read(CASE / "constant/physicalProperties")
turbulence = read(CASE / "constant/momentumTransport")
control = read(CASE / "system/controlDict")
schemes = read(CASE / "system/fvSchemes")
return all(
(
"(-0.2 0.05 0)" in mesh,
"(1 0.1 0)" in mesh,
"(40 20 1)" in mesh,
mesh.count("(200 20 1)") == 2,
"type empty;" in mesh,
has_entry(patch(velocity, "inlet"), "type", r"fixedValue"),
has_entry(patch(velocity, "inlet"), "value", r"uniform\s+\(10(?:\.0+)?\s+0(?:\.0+)?\s+0(?:\.0+)?\)"),
has_entry(patch(velocity, "outlet"), "type", r"zeroGradient"),
has_entry(patch(velocity, "walls"), "type", r"noSlip"),
has_entry(patch(velocity, "frontAndBack"), "type", r"empty"),
has_entry(patch(pressure, "inlet"), "type", r"zeroGradient"),
has_entry(patch(pressure, "outlet"), "type", r"fixedValue"),
has_entry(patch(pressure, "outlet"), "value", r"uniform\s+0(?:\.0+)?"),
has_entry(patch(pressure, "walls"), "type", r"zeroGradient"),
has_entry(patch(pressure, "frontAndBack"), "type", r"empty"),
has_entry(patch(kinetic, "inlet"), "value", r"uniform\s+0\.375"),
has_entry(patch(kinetic, "walls"), "type", r"kqRWallFunction"),
has_entry(patch(omega, "inlet"), "value", r"uniform\s+1000(?:\.0+)?"),
has_entry(patch(omega, "walls"), "type", r"omegaWallFunction"),
has_entry(patch(nut, "walls"), "type", r"nutkWallFunction"),
all(has_entry(patch(field_text, "frontAndBack"), "type", r"empty") for field_text in (kinetic, omega, nut)),
"viscosityModel constant;" in physical,
re.search(r"\bnu\s+\[0 2 -1 0 0 0 0\]\s+1\.5e-?5\s*;", physical, re.I)
is not None,
"simulationType RAS;" in turbulence,
"model kOmegaSST;" in turbulence,
re.search(r"\bendTime\s+2000\s*;", control) is not None,
re.search(r"\bwriteInterval\s+2000\s*;", control) is not None,
"div(phi,U) bounded Gauss linearUpwind grad(U);" in schemes,
"div(phi,k) bounded Gauss upwind;" in schemes,
"div(phi,omega) bounded Gauss upwind;" in schemes,
)
)
def check() -> bool:
required = (
ROOT / "build_case.py",
ROOT / "postprocess.py",
ROOT / "summary.txt",
ROOT / "downstream_wall_pressure.csv",
CASE / "log.blockMesh",
CASE / "log.simpleFoam",
CASE / "log.cellCentres",
CASE / "2000/C",
CASE / "2000/U",
CASE / "2000/p",
)
if any(not path.is_file() or path.stat().st_size == 0 for path in required):
return False
if not python_script_is_valid(
ROOT / "build_case.py",
(
"bfs",
"blockMeshDict",
"controlDict",
"fvSchemes",
"fvSolution",
"0/U",
"0/p",
"0/k",
"0/omega",
"0/nut",
),
):
return False
if not python_script_is_valid(
ROOT / "postprocess.py",
("bfs", "2000", "downstream_wall_pressure.csv", "summary.txt", "min_cp"),
):
return False
if any(not log_finished(CASE / name) for name in ("log.blockMesh", "log.simpleFoam", "log.cellCentres")):
return False
mesh_check = subprocess.run(
["bash", "-lc", ". /opt/openfoam11/etc/bashrc && checkMesh -case /home/user/Desktop/bfs"],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True,
timeout=120,
)
if (
mesh_check.returncode != 0
or "Mesh OK." not in mesh_check.stdout
or "Failed " in mesh_check.stdout
or "foam fatal" in mesh_check.stdout.lower()
or not mesh_check.stdout.rstrip().endswith("End")
or not check_case()
):
return False
centres = field(CASE / "2000/C", "vector")
velocity = field(CASE / "2000/U", "vector")
pressure = field(CASE / "2000/p", "scalar")
if not (len(centres) == len(velocity) == len(pressure) == 8800):
return False
indices = sorted(
(i for i, c in enumerate(centres) if 0.0 < c[0] < 1.0 and c[1] < 0.003),
key=lambda i: centres[i][0],
)
if len(indices) != 200 or not separated(velocity, indices):
return False
calculated = [
(centres[i][0], pressure[i], pressure[i] / (0.5 * U_REF**2), velocity[i][0])
for i in indices
]
min_cp = min(row[2] for row in calculated)
if max(row[1] for row in calculated) - min(row[1] for row in calculated) <= 1.0e-8:
return False
with (ROOT / "downstream_wall_pressure.csv").open(encoding="utf-8", newline="") as stream:
rows = list(csv.DictReader(stream))
if len(rows) != 200 or rows[0].keys() != {
"x_m",
"p_kinematic_m2ps2",
"cp",
"ux_mps",
}:
return False
for row, expected in zip(rows, calculated):
actual = tuple(float(row[key]) for key in row)
if any(not close(a, b, 5.0e-7) for a, b in zip(actual, expected)):
return False
values = [line.strip() for line in read(ROOT / "summary.txt").splitlines() if line.strip()]
if len(values) != 1:
return False
reported = float(values[0])
return math.isfinite(reported) and abs(reported - min_cp) <= 5.0e-7
def main() -> int:
try:
result = check()
except Exception:
result = False
print("True" if result else "False")
return 0
if __name__ == "__main__":
raise SystemExit(main())
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