From 423141eb30b5beab4396dc86a5a6a83c2c3512c6 Mon Sep 17 00:00:00 2001
From: Svenn Tveit <svtv@norceresearch.no>
Date: Mon, 12 Sep 2022 14:01:09 +0200
Subject: [PATCH] Re-add information lost in rebase

---
 opm/material/components/H2.hpp       | 10 ++++++++++
 opm/material/components/SimpleH2.hpp | 12 +++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/opm/material/components/H2.hpp b/opm/material/components/H2.hpp
index 055d9ef75..04edccff9 100644
--- a/opm/material/components/H2.hpp
+++ b/opm/material/components/H2.hpp
@@ -107,6 +107,16 @@ public:
     static Scalar tripleDensity()
     { return 38.2e-3; /* [mol/cm^3] */ }
 
+    /*!
+     * \brief Critical volume of \f$H_2\f$ [m2/kmol].
+     */
+    static Scalar criticalVolume() {return 6.45e-2; }
+
+    /*!
+     * \brief Acentric factor of \f$H_2\f$.
+     */
+    static Scalar acentricFactor() { return -0.22; }
+
     /*!
     * \brief The vapor pressure in \f$\mathrm{[Pa]}\f$ of pure molecular hydrogen
     *        at a given temperature.
diff --git a/opm/material/components/SimpleH2.hpp b/opm/material/components/SimpleH2.hpp
index 7b64e588c..6fe59d414 100644
--- a/opm/material/components/SimpleH2.hpp
+++ b/opm/material/components/SimpleH2.hpp
@@ -43,7 +43,7 @@ namespace Opm {
 /*!
 * \ingroup Components
 *
-* \brief Properties of pure molecular hydrogen \f$H_2\f$. Use ideal gas equations for many properties.
+* \brief Properties of pure molecular hydrogen \f$H_2\f$. Uses ideal gas equations for many properties.
 *
 * \tparam Scalar The type used for scalar values
 */
@@ -89,6 +89,16 @@ public:
     static Scalar tripleTemperature()
     { return 14.0; /* [K] */ }
 
+    /*!
+     * \brief Critical volume of \f$H_2\f$ [m2/kmol].
+     */
+    static Scalar criticalVolume() {return 6.45e-2; }
+
+    /*!
+     * \brief Acentric factor of \f$H_2\f$.
+     */
+    static Scalar acentricFactor() { return -0.22; }
+
     /*!
      * \brief The vapor pressure in \f$\mathrm{[Pa]}\f$ of pure molecular hydrogen
      *        at a given temperature.