fix(burst): recognize native pressure units and separate isolation impact

2026-11-14 23:45:25 +08:00
parent b45c5c6f46
commit 11eb09fe8f
12 changed files with 87 additions and 11 deletions
@@ -17,7 +17,7 @@ GRADES = (

 def _head_factor(unit: Any) -> float | None:
    # Standard water head; unsupported or absent units must not become zero loss.
-    return {"m": 1.0, "meters": 1.0, "metres": 1.0,
+    return {"m": 1.0, "mtr": 1.0, "meters": 1.0, "metres": 1.0,
            "kpa": 1 / 9.80665, "psi": 6894.757293168 / 9806.65,
            "bar": 100000 / 9806.65, "mpa": 1000000 / 9806.65,
            "ft": 0.3048}.get(str(unit).strip().lower())