From cdfdf1623c2358a06ca6e424005f67cac86fcbcb Mon Sep 17 00:00:00 2001
From: Bob Myhill <myhill.bob@gmail.com>
Date: Sun, 24 Mar 2024 20:42:57 +0000
Subject: [PATCH] added function for Cv to anisotropic material

---
 burnman/classes/anisotropicmineral.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/burnman/classes/anisotropicmineral.py b/burnman/classes/anisotropicmineral.py
index 00ea07aa..a0a27ae4 100644
--- a/burnman/classes/anisotropicmineral.py
+++ b/burnman/classes/anisotropicmineral.py
@@ -652,6 +652,21 @@ def grueneisen_tensor(self):
             / self.molar_heat_capacity_p
         )
 
+    @material_property
+    def molar_heat_capacity_v(self):
+        """
+        :returns: The isochoric, hydrostatic heat capacity [J/K/mol].
+        :rtype: float
+        """
+        return (
+            self.molar_heat_capacity_p
+            - self.molar_volume
+            * self.temperature
+            * self.thermal_expansivity
+            * self.thermal_expansivity
+            * self.isothermal_bulk_modulus_reuss
+        )
+
     @material_property
     def grueneisen_parameter(self):
         """