outram-foam-basic-lib 0.1.3

OpenFOAM primitive functions translated to Rust -- an independent OUTRAM PARK fork, not the official OpenFOAM software
Documentation 
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// SPDX-License-Identifier: GPL-3.0-only
// Copyright (C) 2026 OUTRAM PARK contributors
// Derived from OpenFOAM (www.openfoam.com)
// Copyright (C) 2004-2023 OpenFOAM Foundation
// Copyright (C) 2016-2023 OpenCFD Ltd.
//
// This file is part of OUTRAM PARK.
//
// OUTRAM PARK is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// OUTRAM PARK is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with OUTRAM PARK.  If not, see <https://www.gnu.org/licenses/>.

use uom::si::{Quantity, ISQ, SI};
use uom::typenum::{N2, P2, Z0};

/// Compressibility ψ = ∂ρ/∂p|_T  —  SI units: s²/m²  (L⁻²·T²)
///
/// Computed as `MassDensity / Pressure` via uom operator arithmetic; this type
/// alias names the resulting quantity so trait signatures are readable.
pub type Compressibility = Quantity<ISQ<N2, Z0, P2, Z0, Z0, Z0, Z0>, SI<f64>, f64>;