| |
| 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 / "plate" |
| U_REF = 10.0 |
| NU = 1.5e-5 |
| STATION = 0.5 |
|
|
|
|
| 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 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 patch_vectors(path: Path, patch_name: str) -> list[tuple[float, float, float]]: |
| text = read(path) |
| header = named_block(text, "FoamFile") |
| patch_block = patch(text, patch_name) |
| match = re.search( |
| r"\bvalue\s+nonuniform\s+List<vector>\s+(\d+)\s*\((.*?)\)\s*;", |
| patch_block, |
| re.S, |
| ) |
| if not match: |
| raise ValueError(f"missing {patch_name} vectors") |
| values = [ |
| tuple(float(value) for value in item.split()) |
| for item in re.findall(r"\(([^()]+)\)", match.group(2)) |
| ] |
| if ( |
| len(values) != int(match.group(1)) |
| or not all( |
| len(value) == 3 and all(math.isfinite(item) for item in value) |
| for value in values |
| ) |
| or not has_entry(header, "format", r"ascii") |
| or not has_entry(header, "class", r"volVectorField") |
| or not has_entry(header, "object", re.escape(path.name)) |
| ): |
| raise ValueError(f"{patch_name} vector count mismatch") |
| return values |
|
|
|
|
| def downstream_station_sample(rows: list[tuple[float, ...]]) -> tuple[float, ...]: |
| candidates = [row for row in rows if row[0] >= STATION] |
| if not candidates: |
| raise ValueError("missing downstream station sample") |
| return min(candidates, key=lambda row: (abs(row[0] - STATION), row[0])) |
|
|
|
|
| def check_case() -> bool: |
| mesh = read(CASE / "system/blockMeshDict") |
| velocity = read(CASE / "0/U") |
| pressure = read(CASE / "0/p") |
| physical = read(CASE / "constant/physicalProperties") |
| momentum = read(CASE / "constant/momentumTransport") |
| control = read(CASE / "system/controlDict") |
| schemes = read(CASE / "system/fvSchemes") |
| return all( |
| ( |
| "(-0.2 0 0)" in mesh, |
| "(1 0.2 0)" in mesh, |
| "(40 60 1)" in mesh, |
| "(200 60 1)" in mesh, |
| mesh.count("simpleGrading (1 50 1)") == 2, |
| has_entry(named_block(mesh, "upstreamBottom"), "type", r"symmetryPlane"), |
| has_entry(named_block(mesh, "plate"), "type", r"wall"), |
| has_entry(named_block(mesh, "frontAndBack"), "type", r"empty"), |
| all(has_entry(patch(velocity, name), "value", r"uniform\s+\(10(?:\.0+)?\s+0(?:\.0+)?\s+0(?:\.0+)?\)") for name in ("inlet", "freeStream")), |
| has_entry(patch(velocity, "outlet"), "type", r"zeroGradient"), |
| has_entry(patch(velocity, "upstreamBottom"), "type", r"symmetryPlane"), |
| has_entry(patch(velocity, "plate"), "type", r"noSlip"), |
| has_entry(patch(velocity, "frontAndBack"), "type", r"empty"), |
| has_entry(patch(pressure, "outlet"), "type", r"fixedValue"), |
| has_entry(patch(pressure, "outlet"), "value", r"uniform\s+0(?:\.0+)?"), |
| has_entry(patch(pressure, "upstreamBottom"), "type", r"symmetryPlane"), |
| has_entry(patch(pressure, "frontAndBack"), "type", r"empty"), |
| re.search(r"\bnu\s+\[0 2 -1 0 0 0 0\]\s+1\.5e-?5\s*;", physical, re.I) |
| is not None, |
| "simulationType laminar;" in momentum, |
| 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, |
| ) |
| ) |
|
|
|
|
| def check() -> bool: |
| required = ( |
| ROOT / "build_case.py", |
| ROOT / "postprocess.py", |
| ROOT / "summary.txt", |
| ROOT / "plate_shear.csv", |
| CASE / "log.blockMesh", |
| CASE / "log.simpleFoam", |
| CASE / "log.cellCentres", |
| CASE / "log.wallShearStress", |
| CASE / "2000/C", |
| CASE / "2000/U", |
| CASE / "2000/p", |
| CASE / "2000/wallShearStress", |
| ) |
| 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", |
| ("plate", "blockMeshDict", "controlDict", "fvSchemes", "fvSolution", "0/U", "0/p"), |
| ): |
| return False |
| if not python_script_is_valid( |
| ROOT / "postprocess.py", |
| ("plate", "2000", "wallShearStress", "plate_shear.csv", "summary.txt", "STATION"), |
| ): |
| return False |
| solve_log = read(CASE / "log.simpleFoam") |
| if any(not log_finished(path) for path in (CASE / "log.blockMesh", CASE / "log.cellCentres", CASE / "log.wallShearStress")): |
| return False |
| if not log_finished(CASE / "log.simpleFoam") or "Time = 2000" not in solve_log: |
| return False |
| mesh_check = subprocess.run( |
| ["bash", "-lc", ". /opt/openfoam11/etc/bashrc && checkMesh -case /home/user/Desktop/plate"], |
| 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 = internal_field(CASE / "2000/C", "vector") |
| velocity = internal_field(CASE / "2000/U", "vector") |
| pressure = internal_field(CASE / "2000/p", "scalar") |
| if not (len(centres_internal) == len(velocity) == len(pressure) == 14400): |
| return False |
|
|
| centres = patch_vectors(CASE / "2000/C", "plate") |
| shear = patch_vectors(CASE / "2000/wallShearStress", "plate") |
| if len(centres) != 200 or len(shear) != 200: |
| return False |
| calculated = [] |
| for centre, stress in sorted(zip(centres, shear), key=lambda item: item[0][0]): |
| x = centre[0] |
| tau_x = stress[0] |
| cf = 2.0 * abs(tau_x) / U_REF**2 |
| theory = 0.664 / math.sqrt(U_REF * x / NU) |
| error_percent = abs(cf - theory) / theory * 100.0 |
| calculated.append((x, tau_x, cf, theory, error_percent)) |
| sample = downstream_station_sample(calculated) |
| if abs(sample[0] - STATION) > 0.003 or not (8e-4 < sample[2] < 1.5e-3 and sample[4] <= 15.0): |
| return False |
|
|
| keys = ("x_m", "wall_shear_kinematic_m2ps2", "cf", "blasius_cf", "error_percent") |
| with (ROOT / "plate_shear.csv").open(encoding="utf-8", newline="") as stream: |
| rows = list(csv.DictReader(stream)) |
| if len(rows) != 200 or set(rows[0]) != set(keys): |
| return False |
| for row, expected in zip(rows, calculated): |
| actual = tuple(float(row[key]) for key in keys) |
| if any(not close(a, b, 5.0e-7) for a, b in zip(actual, expected)): |
| return False |
|
|
| values = [item.strip() for item in read(ROOT / "summary.txt").strip().split(",")] |
| if len(values) != 2: |
| return False |
| reported = tuple(float(value) for value in values) |
| return all(math.isfinite(value) for value in reported) and all( |
| abs(actual - expected) <= 5.0e-7 |
| for actual, expected in zip(reported, (sample[2], sample[4])) |
| ) |
|
|
|
|
| def main() -> int: |
| try: |
| result = check() |
| except Exception: |
| result = False |
| print("True" if result else "False") |
| return 0 |
|
|
|
|
| if __name__ == "__main__": |
| raise SystemExit(main()) |
|
|
