| |
| from __future__ import annotations |
|
|
| import csv |
| import math |
| import re |
| import subprocess |
| from pathlib import Path |
|
|
|
|
| ROOT = Path("/home/user/Desktop") |
| CASE = ROOT / "shock_tube" |
| PLATEAU_MIN = 0.64 |
| PLATEAU_MAX = 0.72 |
|
|
|
|
| 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 patch(text: str, name: str) -> str: |
| return named_block(named_block(text, "boundaryField"), name) |
|
|
|
|
| def initial_states(path: Path, left: float, right: float) -> bool: |
| try: |
| values = field(path, "scalar") |
| except ValueError: |
| return False |
| return len(values) == 1000 and all(abs(value - left) <= 1.0e-6 for value in values[:500]) and all(abs(value - right) <= 1.0e-6 for value in values[500:]) |
|
|
|
|
| def latest_time() -> Path: |
| times = [ |
| path |
| for path in CASE.iterdir() |
| if path.is_dir() |
| and re.fullmatch(r"(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][-+]?\d+)?", path.name) |
| and float(path.name) > 0 |
| ] |
| if not times: |
| raise FileNotFoundError("no computed time directory") |
| return max(times, key=lambda path: float(path.name)) |
|
|
|
|
| def field(path: Path, kind: str) -> list: |
| text = read(path) |
| header = named_block(text, "FoamFile") |
| if not ( |
| has_entry(header, "format", r"ascii") |
| and has_entry(header, "class", rf"vol{kind.capitalize()}Field") |
| and has_entry(header, "object", re.escape(path.name)) |
| ): |
| raise ValueError(f"field is not ASCII: {path}") |
| match = re.search( |
| rf"internalField\s+nonuniform\s+List<{kind}>\s+(\d+)\s*\((.*?)\)\s*;", |
| text, |
| re.S, |
| ) |
| if not match: |
| raise ValueError(f"missing nonuniform {kind} field") |
| if kind == "vector": |
| values = [ |
| tuple(float(value) for value in item.split()) |
| for item in re.findall(r"\(([^()]+)\)", match.group(2)) |
| ] |
| valid = all( |
| len(value) == 3 and all(math.isfinite(component) for component in value) |
| for value in values |
| ) |
| else: |
| values = [float(value) for value in match.group(2).split()] |
| valid = all(math.isfinite(value) for value in values) |
| if len(values) != int(match.group(1)) or not valid: |
| raise ValueError("field count mismatch") |
| return values |
|
|
|
|
| def paren_section(text: str, name: str) -> str: |
| match = re.search(rf"(?m)^\s*{re.escape(name)}\s*\(", text) |
| if not match: |
| raise ValueError(f"missing section {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 section {name}") |
|
|
|
|
| def numeric_entry(text: str, key: str) -> float: |
| match = re.search(rf"(?<!\w){re.escape(key)}\s+([^;]+);", text) |
| if not match: |
| raise ValueError(f"missing entry {key}") |
| return float(match.group(1)) |
|
|
|
|
| def uniform_vector(text: str) -> tuple[float, float, float]: |
| match = re.search(r"\binternalField\s+uniform\s+\(([^()]+)\)\s*;", text) |
| if not match: |
| raise ValueError("missing uniform vector field") |
| values = tuple(float(value) for value in match.group(1).split()) |
| if len(values) != 3: |
| raise ValueError("invalid uniform vector field") |
| return values |
|
|
|
|
| def box_entry(text: str) -> tuple[tuple[float, ...], tuple[float, ...]]: |
| match = re.search(r"\bbox\s+\(([^()]+)\)\s+\(([^()]+)\)\s*;", text) |
| if not match: |
| raise ValueError("missing box entry") |
| return tuple(float(value) for value in match.group(1).split()), tuple( |
| float(value) for value in match.group(2).split() |
| ) |
|
|
|
|
| def mesh_geometry_is_valid(mesh: str) -> bool: |
| scale_match = re.search(r"\bconvertToMeters\s+([^;]+);", mesh) |
| vertices = [ |
| tuple(float(value) for value in item.split()) |
| for item in re.findall(r"\(([^()]+)\)", paren_section(mesh, "vertices")) |
| ] |
| shapes = [ |
| tuple(int(value) for value in item.split()) |
| for item in re.findall(r"hex\s*\([^)]*\)\s*\(([^()]*)\)", paren_section(mesh, "blocks")) |
| ] |
| if ( |
| scale_match is None |
| or len(vertices) != 8 |
| or any(len(point) != 3 for point in vertices) |
| or shapes != [(1000, 1, 1)] |
| ): |
| return False |
| scale = float(scale_match.group(1)) |
| xs, ys, zs = zip(*(tuple(scale * value for value in point) for point in vertices)) |
| return ( |
| abs(min(xs)) <= 1e-12 |
| and abs(max(xs) - 1.0) <= 1e-12 |
| and abs(min(ys)) <= 1e-12 |
| and abs(max(ys) - 0.01) <= 1e-12 |
| and abs(min(zs)) <= 1e-12 |
| and abs(max(zs) - 0.01) <= 1e-12 |
| ) |
|
|
|
|
| def log_finished(path: Path) -> bool: |
| text = read(path) |
| return "FOAM FATAL" not in text and text.rstrip().endswith("End") |
|
|
|
|
| def pressure_profile(final: Path) -> tuple[float, list[tuple[float, float]]]: |
| centres = field(final / "C", "vector") |
| pressure = field(final / "p", "scalar") |
| if not (len(centres) == len(pressure) == 1000): |
| raise ValueError("unexpected cell count") |
| profile = sorted(((point[0], value) for point, value in zip(centres, pressure)), key=lambda row: row[0]) |
| plateau = [value for x, value in profile if PLATEAU_MIN <= x <= PLATEAU_MAX] |
| if len(plateau) != 80 or any(not math.isfinite(value) or value <= 0 for value in pressure): |
| raise ValueError("invalid pressure field") |
| average = sum(plateau) / len(plateau) |
| relative_std = math.sqrt(sum((value - average) ** 2 for value in plateau) / len(plateau)) / average |
| if not (20000 < average < 50000 and relative_std < 0.05): |
| raise ValueError("fixed interval is not the expected post-shock plateau") |
| return average, profile |
|
|
|
|
| def check_case() -> bool: |
| mesh = read(CASE / "system/blockMeshDict") |
| control = read(CASE / "system/controlDict") |
| initial = read(CASE / "system/setFieldsDict") |
| thermo = read(CASE / "constant/physicalProperties") |
| velocity = read(CASE / "0/U") |
| pressure = read(CASE / "0/p") |
| temperature = read(CASE / "0/T") |
| return all( |
| ( |
| mesh_geometry_is_valid(mesh), |
| has_entry(named_block(mesh, "leftRight"), "type", r"patch"), |
| has_entry(named_block(mesh, "empty"), "type", r"empty"), |
| "application rhoCentralFoam;" in control, |
| abs(numeric_entry(control, "endTime") - 0.0005) <= 1e-15, |
| abs(numeric_entry(control, "maxCo") - 0.2) <= 1e-12, |
| re.search(r"\bwriteFormat\s+ascii\s*;", control) is not None, |
| box_entry(initial) == ((0.0, 0.0, 0.0), (0.5, 0.01, 0.01)), |
| uniform_vector(velocity) == (0.0, 0.0, 0.0), |
| has_entry(patch(velocity, "leftRight"), "type", r"zeroGradient"), |
| has_entry(patch(velocity, "empty"), "type", r"empty"), |
| has_entry(patch(pressure, "leftRight"), "type", r"zeroGradient"), |
| has_entry(patch(pressure, "empty"), "type", r"empty"), |
| has_entry(patch(temperature, "leftRight"), "type", r"zeroGradient"), |
| has_entry(patch(temperature, "empty"), "type", r"empty"), |
| initial_states(CASE / "0/p", 100000.0, 10000.0), |
| initial_states(CASE / "0/T", 348.308740203735, 278.646992162988), |
| "equationOfState perfectGas;" in thermo, |
| abs(numeric_entry(thermo, "molWeight") - 28.96) <= 1e-12, |
| abs(numeric_entry(thermo, "Cp") - 1004.5) <= 1e-12, |
| abs(numeric_entry(thermo, "mu")) <= 1e-15, |
| ) |
| ) |
|
|
|
|
| def check() -> bool: |
| final = latest_time() |
| required = ( |
| ROOT / "build_case.py", |
| ROOT / "postprocess.py", |
| ROOT / "summary.txt", |
| ROOT / "pressure_profile.csv", |
| CASE / "log.blockMesh", |
| CASE / "log.checkMesh", |
| CASE / "log.setFields", |
| CASE / "log.rhoCentralFoam", |
| CASE / "log.writeCellCentres", |
| final / "C", |
| final / "p", |
| final / "T", |
| final / "U", |
| ) |
| if any(not path.is_file() or path.stat().st_size == 0 for path in required): |
| return False |
| if abs(float(final.name) - 0.0005) > 1e-15: |
| return False |
| mesh_log = read(CASE / "log.checkMesh") |
| solve_log = read(CASE / "log.rhoCentralFoam") |
| if not ( |
| log_finished(CASE / "log.blockMesh") |
| and "Mesh OK." in mesh_log |
| and log_finished(CASE / "log.checkMesh") |
| and log_finished(CASE / "log.setFields") |
| and log_finished(CASE / "log.writeCellCentres") |
| and "Time = 0.0005" in solve_log |
| and log_finished(CASE / "log.rhoCentralFoam") |
| ): |
| return False |
| mesh_check = subprocess.run( |
| [ |
| "bash", |
| "--noprofile", |
| "--norc", |
| "-c", |
| "trap - CHLD; . /opt/openfoam11/etc/bashrc && checkMesh -case /home/user/Desktop/shock_tube", |
| ], |
| 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 |
|
|
| temperature = field(final / "T", "scalar") |
| velocity = field(final / "U", "vector") |
| if not ( |
| len(temperature) == len(velocity) == 1000 |
| and all(value > 0 for value in temperature) |
| ): |
| return False |
| average, profile = pressure_profile(final) |
| with (ROOT / "pressure_profile.csv").open(encoding="utf-8", newline="") as stream: |
| rows = list(csv.DictReader(stream)) |
| if len(rows) != len(profile) or set(rows[0]) != {"x_m", "p_pa"}: |
| return False |
| for row, expected in zip(rows, profile): |
| actual = (float(row["x_m"]), float(row["p_pa"])) |
| if any(not close(left, right, 5e-7) for left, right in zip(actual, expected)): |
| return False |
|
|
| lines = [line.strip() for line in read(ROOT / "summary.txt").splitlines() if line.strip()] |
| if len(lines) != 1: |
| return False |
| reported = float(lines[0]) |
| return math.isfinite(reported) and abs(reported - average) <= 5e-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()) |
|
|
