Merge pull request #66 from andrsd/ig-api

Apping API to get parameter values from IdealGas
andrsd · Jul 4, 2024 · 7c41ed9 · 7c41ed9
2 parents a9053ee + c90f1bd
commit 7c41ed9
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Showing 3 changed files with 66 additions and 1 deletion.
diff --git a/include/fprops/IdealGas.h b/include/fprops/IdealGas.h
@@ -22,11 +22,36 @@ class IdealGas : public SinglePhaseFluidProperties {
     /// @return Adiabatic index (ratio of specific heats cp/cv)
     double get_gamma() const;
 
+    /// Get molar mass
+    ///
+    /// @return Molar mass \f$[kg/mol]\f$
+    double get_molar_mass() const;
+
     /// Get specific gas constant
     ///
     /// @return Specific gas constant
     double get_specific_gas_constant() const;
 
+    /// Get specific heat at constant pressure
+    ///
+    /// @return Specific heat at constant pressure \f$[J/(kg-K)]\f$
+    double get_cp() const;
+
+    /// Specific heat at constant volume \f$[J/(kg-K)]\f$
+    ///
+    /// @return Specific heat at constant volume \f$[J/(kg-K)]\f$
+    double get_cv() const;
+
+    /// Get dynamic viscosity
+    ///
+    /// @return Dynamic viscosity \f$[Pa-s]\f$
+    double get_mu() const;
+
+    /// Get thermal conductivity
+    ///
+    /// @return Thermal conductivity \f$[W/(m-K)]\f$
+    double get_k() const;
+
     /// Set dynamic viscosity
     ///
     /// @param mu Dynamic viscosity \f$[Pa-s]\f$

diff --git a/src/IdealGas.cpp b/src/IdealGas.cpp
@@ -28,12 +28,42 @@ IdealGas::get_gamma() const
     return this->gamma;
 }
 
+double
+IdealGas::get_molar_mass() const
+{
+    return this->molar_mass;
+}
+
 double
 IdealGas::get_specific_gas_constant() const
 {
     return this->R_specific;
 }
 
+double
+IdealGas::get_cp() const
+{
+    return this->cp;
+}
+
+double
+IdealGas::get_cv() const
+{
+    return this->cv;
+}
+
+double
+IdealGas::get_mu() const
+{
+    return this->mu;
+}
+
+double
+IdealGas::get_k() const
+{
+    return this->k;
+}
+
 State
 IdealGas::rho_T(double rho, double T) const
 {

diff --git a/test/src/IdealGas_test.cpp b/test/src/IdealGas_test.cpp
@@ -25,9 +25,19 @@ TEST(IdealGas, api)
 {
     double gamma = 1.4;
     double molar_mass = 29.0e-3;
+    double mu = 18.23e-6;
+    double k = 25.68e-3;
     IdealGas fp(gamma, molar_mass);
+    fp.set_mu(mu);
+    fp.set_k(k);
+
     EXPECT_DOUBLE_EQ(fp.get_gamma(), gamma);
-    EXPECT_DOUBLE_EQ(fp.get_specific_gas_constant(), 286.70551034482759);
+    EXPECT_NEAR(fp.get_specific_gas_constant(), 286.7055103448, 1e-10);
+    EXPECT_DOUBLE_EQ(fp.get_molar_mass(), molar_mass);
+    EXPECT_NEAR(fp.get_cp(), 1003.4692862068, 1e-10);
+    EXPECT_NEAR(fp.get_cv(), 716.7637758620, 1e-10);
+    EXPECT_DOUBLE_EQ(fp.get_mu(), mu);
+    EXPECT_DOUBLE_EQ(fp.get_k(), k);
 }
 
 TEST(IdealGas, rho_T)