From 5017f36a57c71f7e9936d4f7ac5a21aa0b64ef30 Mon Sep 17 00:00:00 2001
From: Ingmar Schoegl <ischoegl@lsu.edu>
Date: Sun, 11 Aug 2024 09:55:45 -0500
Subject: [PATCH] [.NET] Update Equilibrate

---
 .../dotnet/Cantera.Tests/src/EnumsTest.cs     |  4 ---
 interfaces/dotnet/Cantera/src/Enums.cs        | 26 -------------------
 interfaces/dotnet/Cantera/src/ThermoPhase.cs  |  5 ++--
 3 files changed, 2 insertions(+), 33 deletions(-)

diff --git a/interfaces/dotnet/Cantera.Tests/src/EnumsTest.cs b/interfaces/dotnet/Cantera.Tests/src/EnumsTest.cs
index a2be7a4c8c4..04995dcc9c9 100644
--- a/interfaces/dotnet/Cantera.Tests/src/EnumsTest.cs
+++ b/interfaces/dotnet/Cantera.Tests/src/EnumsTest.cs
@@ -37,10 +37,6 @@ public void ThermoPair_ToStringsCorrectly()
         }
     }
 
-    [Fact]
-    public void EquilibriumSolver_MapsCorrectly() =>
-        TestInteropEnumInvariants<EquilibriumSolver>(true, -1, 2);
-
     [Fact]
     public void LogLevel_MapsCorrectly() =>
         TestInteropEnumInvariants<LogLevel>(true, 0, 2);
diff --git a/interfaces/dotnet/Cantera/src/Enums.cs b/interfaces/dotnet/Cantera/src/Enums.cs
index 4399d107bf0..a171edbef8e 100644
--- a/interfaces/dotnet/Cantera/src/Enums.cs
+++ b/interfaces/dotnet/Cantera/src/Enums.cs
@@ -103,32 +103,6 @@ public static string ToInteropString(this ThermoPair thermoPair)
 
 // the constants MUST match what CLIB is expecting
 
-/// <summary>
-/// Determines which algorithm is used to find equilibrium.
-/// </summary>
-public enum EquilibriumSolver
-{
-    /// <summary>
-    /// Allow Cantera to determine the optimum algorithm.
-    /// </summary>
-    Auto = -1,
-
-    /// <summary>
-    /// Solve by using the element potential algorithm.
-    /// </summary>
-    ElementPotential,
-
-    /// <summary>
-    /// Solve by using the general algorithm to minimize Gibbs free energy.
-    /// </summary>
-    Gibbs,
-
-    /// <summary>
-    /// Solved by using the VCS algorithm to minimize Gibbs free energy.
-    /// </summary>
-    Vcs
-}
-
 /// <summary>
 /// The
 /// </summary>
diff --git a/interfaces/dotnet/Cantera/src/ThermoPhase.cs b/interfaces/dotnet/Cantera/src/ThermoPhase.cs
index fb9f5ddab7a..3b280c4f23a 100644
--- a/interfaces/dotnet/Cantera/src/ThermoPhase.cs
+++ b/interfaces/dotnet/Cantera/src/ThermoPhase.cs
@@ -61,11 +61,10 @@ internal ThermoPhase(string filename, string? phaseName)
 
     /// <summary>
     /// Simulates bringing the phase to thermodynamic equilibrium by holding the
-    /// specified <see cref="ThermoPair" /> constant and using the algorithm
-    /// identified by the given <see cref="EquilibriumSolver" />.
+    /// specified <see cref="ThermoPair" /> constant and using the identified algorithm.
     /// </summary>
     public void Equilibrate(ThermoPair thermoPair,
-                            EquilibriumSolver solver = EquilibriumSolver.Auto,
+                            string algorithm = "auto",
                             double tolerance = 1e-9, int maxSteps = 1000,
                             int maxIterations = 100, int logVerbosity = 0)
     {