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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 / "buoyant"
TIME = CASE / "1000"
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 completed_log(path: Path, required_fragment: str | None = None) -> bool:
text = read(path)
lines = [line.strip() for line in text.splitlines() if line.strip()]
return (
bool(lines)
and lines[-1] == "End"
and "FOAM FATAL" not in text
and (required_fragment is None or required_fragment in text)
)
def patch(text: str, name: str) -> str:
return named_block(named_block(text, "boundaryField"), name)
def face_count(block: str) -> int:
match = re.search(r"\bfaces\s*\((.*?)\)\s*;", block, re.S)
return len(re.findall(r"\([^()]+\)", match.group(1))) if match else 0
def internal_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 check_case() -> bool:
mesh = read(CASE / "system/blockMeshDict")
temperature = read(CASE / "0/T")
velocity = read(CASE / "0/U")
pressure = read(CASE / "0/p")
physical = read(CASE / "constant/physicalProperties")
momentum = read(CASE / "constant/momentumTransport")
gravity = read(CASE / "constant/g")
control = read(CASE / "system/controlDict")
schemes = read(CASE / "system/fvSchemes")
solution = read(CASE / "system/fvSolution")
boundary = read(CASE / "constant/polyMesh/boundary")
return all(
(
"(0.1 0.1 0.01)" in mesh,
"(41 41 1)" in mesh,
has_entry(named_block(mesh, "hot"), "type", r"wall"),
face_count(named_block(mesh, "hot")) == 1,
has_entry(named_block(mesh, "cold"), "type", r"wall"),
face_count(named_block(mesh, "cold")) == 1,
has_entry(named_block(mesh, "topAndBottom"), "type", r"wall"),
face_count(named_block(mesh, "topAndBottom")) == 2,
has_entry(named_block(mesh, "frontAndBack"), "type", r"empty"),
face_count(named_block(mesh, "frontAndBack")) == 2,
re.search(r"\binternalField\s+uniform\s+300(?:\.0+)?\s*;", temperature) is not None,
has_entry(patch(temperature, "hot"), "value", r"uniform\s+310(?:\.0+)?"),
has_entry(patch(temperature, "cold"), "value", r"uniform\s+290(?:\.0+)?"),
has_entry(patch(temperature, "topAndBottom"), "type", r"zeroGradient"),
has_entry(patch(temperature, "frontAndBack"), "type", r"empty"),
re.search(r"\binternalField\s+uniform\s+\(0(?:\.0+)?\s+0(?:\.0+)?\s+0(?:\.0+)?\)\s*;", velocity) is not None,
all(has_entry(patch(velocity, name), "type", r"noSlip") for name in ("hot", "cold", "topAndBottom")),
has_entry(patch(velocity, "frontAndBack"), "type", r"empty"),
re.search(r"\binternalField\s+uniform\s+100000(?:\.0+)?\s*;", pressure) is not None,
re.search(r"\bmolWeight\s+28\.96\s*;", physical) is not None,
re.search(r"\bCp\s+1004\.4\s*;", physical) is not None,
re.search(r"\bmu\s+1\.846e-0?5\s*;", physical, re.I) is not None,
re.search(r"\bPr\s+0\.71\s*;", physical) is not None,
"simulationType laminar;" in momentum,
"value (0 -9.81 0);" in gravity,
re.search(r"\bendTime\s+1000\s*;", control) is not None,
re.search(r"\bwriteInterval\s+1000\s*;", control) is not None,
re.search(r"\bapplication\s+foamRun\s*;", control) is not None,
re.search(r"\bsolver\s+fluid\s*;", control) is not None,
re.search(r"\bwriteFormat\s+ascii\s*;", control) is not None,
has_entry(named_block(schemes, "ddtSchemes"), "default", r"steadyState"),
has_entry(named_block(schemes, "divSchemes"), "div(phi,U)", r"bounded\s+Gauss\s+upwind"),
has_entry(named_block(schemes, "divSchemes"), "div(phi,h)", r"bounded\s+Gauss\s+upwind"),
has_entry(named_block(named_block(solution, "solvers"), "p_rgh"), "solver", r"GAMG"),
re.search(r"\bfrontAndBack\b.*?type\s+empty;", boundary, re.S)
is not None,
)
)
def check() -> bool:
required = (
ROOT / "build_case.py",
ROOT / "postprocess.py",
ROOT / "summary.txt",
ROOT / "center_sample.csv",
CASE / "log.blockMesh",
CASE / "log.checkMesh",
CASE / "log.foamRun",
CASE / "log.cellCentres",
TIME / "T",
TIME / "U",
TIME / "p",
TIME / "p_rgh",
TIME / "C",
)
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",
("buoyant", "blockMeshDict", "physicalProperties", "foamRun", "p_rgh", "0/T", "0/U"),
):
return False
if not python_script_is_valid(
ROOT / "postprocess.py",
("buoyant", "1000", "center_sample.csv", "summary.txt", "max_speed"),
):
return False
if not all(
(
completed_log(CASE / "log.blockMesh"),
completed_log(CASE / "log.checkMesh"),
completed_log(CASE / "log.foamRun", "Time = 1000"),
completed_log(CASE / "log.cellCentres"),
)
):
return False
mesh_check = subprocess.run(
[
"bash",
"--noprofile",
"--norc",
"-c",
"trap - CHLD; . /opt/openfoam11/etc/bashrc && checkMesh -case /home/user/Desktop/buoyant",
],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True,
timeout=120,
)
if mesh_check.returncode != 0 or "Mesh OK." not in mesh_check.stdout or not check_case():
return False
centres = internal_field(TIME / "C", "vector")
temperatures = internal_field(TIME / "T", "scalar")
velocity = internal_field(TIME / "U", "vector")
pressure = internal_field(TIME / "p", "scalar")
pressure_rgh = internal_field(TIME / "p_rgh", "scalar")
if not (
len(centres)
== len(temperatures)
== len(velocity)
== len(pressure)
== len(pressure_rgh)
== 1681
):
return False
target = (0.05, 0.05, 0.005)
index = min(
range(len(centres)),
key=lambda i: sum((centres[i][j] - target[j]) ** 2 for j in range(3)),
)
point = centres[index]
if math.sqrt(sum((point[j] - target[j]) ** 2 for j in range(3))) > 1.0e-9:
return False
center_temp = temperatures[index]
max_speed = max(math.sqrt(sum(component**2 for component in item)) for item in velocity)
if not (
295.0 < center_temp < 305.0
and min(temperatures) > 289.0
and max(temperatures) < 311.0
and max(temperatures) - min(temperatures) > 15.0
and 1.0e-4 < max_speed < 1.0
):
return False
with (ROOT / "center_sample.csv").open(encoding="utf-8", newline="") as stream:
rows = list(csv.DictReader(stream))
if len(rows) != 1 or set(rows[0]) != {
"x",
"y",
"z",
"temperature_k",
"max_speed_m_s",
}:
return False
row = rows[0]
sample = tuple(float(row[key]) for key in ("x", "y", "z"))
if any(not close(a, b, 1.0e-10) for a, b in zip(sample, point)):
return False
if not close(float(row["temperature_k"]), center_temp, 5.0e-7):
return False
if not close(float(row["max_speed_m_s"]), max_speed, 5.0e-7):
return False
reported = float(read(ROOT / "summary.txt").strip())
return math.isfinite(reported) and abs(reported - center_temp) <= 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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