From 59b1ee80b156ea8f4536d4330a177ea6e803a358 Mon Sep 17 00:00:00 2001
From: divyaadil23 <divyaad@stanford.edu>
Date: Fri, 4 Oct 2024 12:08:15 -0700
Subject: [PATCH] Removed redundant norm function and updated result file
 without solid viscosity.

---
 Code/Source/svFSI/mat_fun_carray.h            |  10 +-
 .../result_001.vtu                            |   4 +-
 .../svFSI.xml                                 | 115 -----------------
 .../svFSIplus.xml                             |   5 +-
 .../LV_HolzapfelOgden_passive/result_001.vtu  |   4 +-
 .../LV_HolzapfelOgden_passive/svFSI.xml       | 115 -----------------
 .../LV_HolzapfelOgden_passive/svFSIplus.xml   |   5 +-
 .../result_001.vtu                            |   4 +-
 .../svFSI.xml                                 | 116 ------------------
 .../svFSIplus.xml                             |   5 +-
 .../LV_HolzapfelOgden_passive/result_001.vtu  |   4 +-
 .../LV_HolzapfelOgden_passive/svFSI.xml       | 116 ------------------
 .../LV_HolzapfelOgden_passive/svFSIplus.xml   |   5 +-
 13 files changed, 17 insertions(+), 491 deletions(-)
 delete mode 100644 tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml
 delete mode 100644 tests/cases/struct/LV_HolzapfelOgden_passive/svFSI.xml
 delete mode 100644 tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml
 delete mode 100644 tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSI.xml

diff --git a/Code/Source/svFSI/mat_fun_carray.h b/Code/Source/svFSI/mat_fun_carray.h
index f59de602..212f876f 100644
--- a/Code/Source/svFSI/mat_fun_carray.h
+++ b/Code/Source/svFSI/mat_fun_carray.h
@@ -458,15 +458,7 @@ double norm(const Vector<double>& u, const double v[N])
   return norm;
 }
 
-template <size_t N>
-double norm(const Vector<double>& u, const Vector<double>& v)
-{
-  double norm = 0.0;
-  for (int i = 0; i < N; i++) {
-    norm += u[i]*v[i];
-  }
-  return norm;
-}
+
 
 template <size_t N>
 void mat_symm(const double A[N][N], double S[N][N])
diff --git a/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu b/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu
index be4f12bb..001d74ad 100644
--- a/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu
+++ b/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:41c014d510351d8ccc33c4779798787da6ccba4f41de1e8fe5b0e25d5ec88adb
-size 249810
+oid sha256:282b0f90edcdcd4b7e47032c2aa47c4ab47aaf66717050ed1001d6483e36c741
+size 249794
diff --git a/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml b/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml
deleted file mode 100644
index 9c7fed81..00000000
--- a/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml
+++ /dev/null
@@ -1,115 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<svFSIFile version="0.1">
-
-<GeneralSimulationParameters>
-  <Continue_previous_simulation> 0 </Continue_previous_simulation>
-  <Number_of_spatial_dimensions> 3 </Number_of_spatial_dimensions> 
-  <Number_of_time_steps> 1 </Number_of_time_steps> 
-  <Time_step_size> 1e-2 </Time_step_size> 
-  <Spectral_radius_of_infinite_time_step> 0.50 </Spectral_radius_of_infinite_time_step> 
-  <Searched_file_name_to_trigger_stop> STOP_SIM </Searched_file_name_to_trigger_stop> 
-
-  <Save_results_to_VTK_format> 1 </Save_results_to_VTK_format> 
-  <Name_prefix_of_saved_VTK_files> result </Name_prefix_of_saved_VTK_files> 
-  <!-- <Save_results_in_folder> results_svfsiplus </Save_results_in_folder> -->
-  <Increment_in_saving_VTK_files> 1 </Increment_in_saving_VTK_files> 
-  <Start_saving_after_time_step> 1 </Start_saving_after_time_step> 
-
-  <Increment_in_saving_restart_files> 50 </Increment_in_saving_restart_files> 
-  <Convert_BIN_to_VTK_format> 0 </Convert_BIN_to_VTK_format> 
-
-  <Verbose> 1 </Verbose> 
-  <Warning> 1 </Warning> 
-  <Debug> 1 </Debug> 
-
-</GeneralSimulationParameters>
-
-
-<Add_mesh name="msh" > 
-
-  <Mesh_file_path> mesh/mesh-complete.mesh.vtu </Mesh_file_path>
-
-  <Add_face name="endo">
-      <Face_file_path> mesh/mesh-surfaces/endo.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="epi">
-      <Face_file_path> mesh/mesh-surfaces/epi.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="top">
-      <Face_file_path> mesh/mesh-surfaces/top.vtp </Face_file_path>
-  </Add_face>
-
-  <Fiber_direction_file_path> mesh/fibersLongCells.vtu </Fiber_direction_file_path>
-  <Fiber_direction_file_path> mesh/fibersSheetCells.vtu </Fiber_direction_file_path>
-
-  <Mesh_scale_factor> 100.0 </Mesh_scale_factor> <!-- Convert from m to cm -->
-</Add_mesh>
-
-<!-- Using cgs units-->
-<Add_equation type="struct" > 
-
-   <Coupled> true </Coupled>
-   <Min_iterations> 3 </Min_iterations>  
-   <Max_iterations> 20 </Max_iterations> 
-   <Tolerance> 1e-10 </Tolerance> 
-
-   <Density> 1.0 </Density>                           <!-- g/cm^3 -->
-   <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
-   <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
-    
-    <Constitutive_model type="HolzapfelOgden-ModifiedAnisotropy"> 
-     <a> 590.0 </a>                                   <!-- dyne/cm^2 -->
-     <b> 8.023 </b>                                   <!-- no units -->
-     <a4f> 184720.0 </a4f>
-     <b4f> 16.026 </b4f>
-     <a4s> 24810.0 </a4s>
-     <b4s> 11.12 </b4s>
-     <afs> 2160.0 </afs>
-     <bfs> 11.436 </bfs>
-     <k> 100.0 </k>
-   </Constitutive_model>
-
-   <Dilational_penalty_model> ST91 </Dilational_penalty_model>
-   <Penalty_parameter>1.0e7</Penalty_parameter>
-
-    <Output type="Spatial" >
-     <Displacement> true </Displacement>
-     <Velocity> true </Velocity>
-     <Jacobian> true </Jacobian>
-     <Stress> true </Stress>
-     <Strain> true </Strain>
-     <Cauchy_stress> true </Cauchy_stress>
-     <Def_grad> true </Def_grad>
-     <VonMises_stress> true </VonMises_stress>
-   </Output>
-
-   <LS type="GMRES" >
-      <Linear_algebra type="fsils" >
-         <Preconditioner> fsils </Preconditioner>
-      </Linear_algebra>
-      <Tolerance> 1e-16 </Tolerance>
-      <Max_iterations> 1000 </Max_iterations> 
-      <Krylov_space_dimension> 50 </Krylov_space_dimension>
-   </LS>
-
-   <Add_BC name="top" > 
-      <Type> Dirichlet </Type> 
-      <Value> 0.0 </Value>
-   </Add_BC> 
-
-   <Add_BC name="endo" > 
-      <Type> Neu </Type> 
-      <Time_dependence> Unsteady </Time_dependence> 
-      <Temporal_values_file_path> endo_pressure.dat </Temporal_values_file_path> 
-      <Ramp_function> false </Ramp_function> 
-      <Follower_pressure_load> true </Follower_pressure_load> 
-   </Add_BC> 
-
-</Add_equation>
-
-</svFSIFile>
diff --git a/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml b/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml
index 9c7fed81..2878d433 100644
--- a/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml
+++ b/tests/cases/struct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml
@@ -58,9 +58,8 @@
    <Density> 1.0 </Density>                           <!-- g/cm^3 -->
    <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
    <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
+   
+   <!-- <Solid_viscosity> 0.9 </Solid_viscosity> -->
     
     <Constitutive_model type="HolzapfelOgden-ModifiedAnisotropy"> 
      <a> 590.0 </a>                                   <!-- dyne/cm^2 -->
diff --git a/tests/cases/struct/LV_HolzapfelOgden_passive/result_001.vtu b/tests/cases/struct/LV_HolzapfelOgden_passive/result_001.vtu
index ae6471f8..72d5b06b 100644
--- a/tests/cases/struct/LV_HolzapfelOgden_passive/result_001.vtu
+++ b/tests/cases/struct/LV_HolzapfelOgden_passive/result_001.vtu
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:17c0f11e6ba7b62335684c9f5b15e77f1827f43ecae17ad4814b6785603a9e33
-size 249894
+oid sha256:98380148f70f0379a869619d69bab3c8916003185bb9ea5301eda2f88bb9aef9
+size 249906
diff --git a/tests/cases/struct/LV_HolzapfelOgden_passive/svFSI.xml b/tests/cases/struct/LV_HolzapfelOgden_passive/svFSI.xml
deleted file mode 100644
index b70e288b..00000000
--- a/tests/cases/struct/LV_HolzapfelOgden_passive/svFSI.xml
+++ /dev/null
@@ -1,115 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<svFSIFile version="0.1">
-
-<GeneralSimulationParameters>
-  <Continue_previous_simulation> 0 </Continue_previous_simulation>
-  <Number_of_spatial_dimensions> 3 </Number_of_spatial_dimensions> 
-  <Number_of_time_steps> 1 </Number_of_time_steps> 
-  <Time_step_size> 1e-2 </Time_step_size> 
-  <Spectral_radius_of_infinite_time_step> 0.50 </Spectral_radius_of_infinite_time_step> 
-  <Searched_file_name_to_trigger_stop> STOP_SIM </Searched_file_name_to_trigger_stop> 
-
-  <Save_results_to_VTK_format> 1 </Save_results_to_VTK_format> 
-  <Name_prefix_of_saved_VTK_files> result </Name_prefix_of_saved_VTK_files> 
-  <!-- <Save_results_in_folder> results_svfsiplus </Save_results_in_folder> -->
-  <Increment_in_saving_VTK_files> 1 </Increment_in_saving_VTK_files> 
-  <Start_saving_after_time_step> 1 </Start_saving_after_time_step> 
-
-  <Increment_in_saving_restart_files> 50 </Increment_in_saving_restart_files> 
-  <Convert_BIN_to_VTK_format> 0 </Convert_BIN_to_VTK_format> 
-
-  <Verbose> 1 </Verbose> 
-  <Warning> 1 </Warning> 
-  <Debug> 1 </Debug> 
-
-</GeneralSimulationParameters>
-
-
-<Add_mesh name="msh" > 
-
-  <Mesh_file_path> mesh/mesh-complete.mesh.vtu </Mesh_file_path>
-
-  <Add_face name="endo">
-      <Face_file_path> mesh/mesh-surfaces/endo.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="epi">
-      <Face_file_path> mesh/mesh-surfaces/epi.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="top">
-      <Face_file_path> mesh/mesh-surfaces/top.vtp </Face_file_path>
-  </Add_face>
-
-  <Fiber_direction_file_path> mesh/fibersLongCells.vtu </Fiber_direction_file_path>
-  <Fiber_direction_file_path> mesh/fibersSheetCells.vtu </Fiber_direction_file_path>
-
-  <Mesh_scale_factor> 100.0 </Mesh_scale_factor> <!-- Convert from m to cm -->
-</Add_mesh>
-
-<!-- Using cgs units-->
-<Add_equation type="struct" > 
-
-   <Coupled> true </Coupled>
-   <Min_iterations> 3 </Min_iterations>  
-   <Max_iterations> 20 </Max_iterations> 
-   <Tolerance> 1e-10 </Tolerance> 
-
-   <Density> 1.0 </Density>                           <!-- g/cm^3 -->
-   <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
-   <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
-    
-    <Constitutive_model type="HolzapfelOgden"> 
-     <a> 590.0 </a>                                   <!-- dyne/cm^2 -->
-     <b> 8.023 </b>                                   <!-- no units -->
-     <a4f> 184720.0 </a4f>
-     <b4f> 16.026 </b4f>
-     <a4s> 24810.0 </a4s>
-     <b4s> 11.12 </b4s>
-     <afs> 2160.0 </afs>
-     <bfs> 11.436 </bfs>
-     <k> 100.0 </k>
-   </Constitutive_model>
-
-   <Dilational_penalty_model> ST91 </Dilational_penalty_model>
-   <Penalty_parameter>1.0e7</Penalty_parameter>
-
-    <Output type="Spatial" >
-     <Displacement> true </Displacement>
-     <Velocity> true </Velocity>
-     <Jacobian> true </Jacobian>
-     <Stress> true </Stress>
-     <Strain> true </Strain>
-     <Cauchy_stress> true </Cauchy_stress>
-     <Def_grad> true </Def_grad>
-     <VonMises_stress> true </VonMises_stress>
-   </Output>
-
-   <LS type="GMRES" >
-      <Linear_algebra type="fsils" >
-         <Preconditioner> fsils </Preconditioner>
-      </Linear_algebra>
-      <Tolerance> 1e-16 </Tolerance>
-      <Max_iterations> 1000 </Max_iterations> 
-      <Krylov_space_dimension> 50 </Krylov_space_dimension>
-   </LS>
-
-   <Add_BC name="top" > 
-      <Type> Dirichlet </Type> 
-      <Value> 0.0 </Value>
-   </Add_BC> 
-
-   <Add_BC name="endo" > 
-      <Type> Neu </Type> 
-      <Time_dependence> Unsteady </Time_dependence> 
-      <Temporal_values_file_path> endo_pressure.dat </Temporal_values_file_path> 
-      <Ramp_function> false </Ramp_function> 
-      <Follower_pressure_load> true </Follower_pressure_load> 
-   </Add_BC> 
-
-</Add_equation>
-
-</svFSIFile>
diff --git a/tests/cases/struct/LV_HolzapfelOgden_passive/svFSIplus.xml b/tests/cases/struct/LV_HolzapfelOgden_passive/svFSIplus.xml
index b70e288b..5180473d 100644
--- a/tests/cases/struct/LV_HolzapfelOgden_passive/svFSIplus.xml
+++ b/tests/cases/struct/LV_HolzapfelOgden_passive/svFSIplus.xml
@@ -58,9 +58,8 @@
    <Density> 1.0 </Density>                           <!-- g/cm^3 -->
    <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
    <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
+   
+   <!-- <Solid_viscosity> 0.9 </Solid_viscosity> -->
     
     <Constitutive_model type="HolzapfelOgden"> 
      <a> 590.0 </a>                                   <!-- dyne/cm^2 -->
diff --git a/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu b/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu
index 23a3f5f9..317965b7 100644
--- a/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu
+++ b/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/result_001.vtu
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:77abc2c3e7df6521082cc60a5b9757a7b1b5179fed5f6d18f9511b8b14ae2bc9
-size 256598
+oid sha256:fda0ce16348dd0d7e46f8fc3fd98dc68b71ec3d3c8363705656cfbfc7e8a1f71
+size 256530
diff --git a/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml b/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml
deleted file mode 100644
index 86c03bae..00000000
--- a/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSI.xml
+++ /dev/null
@@ -1,116 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<svFSIFile version="0.1">
-
-<GeneralSimulationParameters>
-  <Continue_previous_simulation> 0 </Continue_previous_simulation>
-  <Number_of_spatial_dimensions> 3 </Number_of_spatial_dimensions> 
-  <Number_of_time_steps> 1 </Number_of_time_steps> 
-  <Time_step_size> 1e-2 </Time_step_size> 
-  <Spectral_radius_of_infinite_time_step> 0.50 </Spectral_radius_of_infinite_time_step> 
-  <Searched_file_name_to_trigger_stop> STOP_SIM </Searched_file_name_to_trigger_stop> 
-
-  <Save_results_to_VTK_format> 1 </Save_results_to_VTK_format> 
-  <Name_prefix_of_saved_VTK_files> result </Name_prefix_of_saved_VTK_files> 
-  <!-- <Save_results_in_folder> results_svfsiplus </Save_results_in_folder> -->
-  <Increment_in_saving_VTK_files> 1 </Increment_in_saving_VTK_files> 
-  <Start_saving_after_time_step> 1 </Start_saving_after_time_step> 
-
-  <Increment_in_saving_restart_files> 50 </Increment_in_saving_restart_files> 
-  <Convert_BIN_to_VTK_format> 0 </Convert_BIN_to_VTK_format> 
-
-  <Verbose> 1 </Verbose> 
-  <Warning> 1 </Warning> 
-  <Debug> 1 </Debug> 
-
-</GeneralSimulationParameters>
-
-<Add_mesh name="msh" > 
-
-  <Mesh_file_path> mesh/mesh-complete.mesh.vtu </Mesh_file_path>
-
-  <Add_face name="endo">
-      <Face_file_path> mesh/mesh-surfaces/endo.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="epi">
-      <Face_file_path> mesh/mesh-surfaces/epi.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="top">
-      <Face_file_path> mesh/mesh-surfaces/top.vtp </Face_file_path>
-  </Add_face>
-
-  <Fiber_direction_file_path> mesh/fibersLongCells.vtu </Fiber_direction_file_path>
-  <Fiber_direction_file_path> mesh/fibersSheetCells.vtu </Fiber_direction_file_path>
-
-  <Mesh_scale_factor> 100.0 </Mesh_scale_factor> <!-- Convert from m to cm -->
-</Add_mesh>
-
-
-<Add_equation type="ustruct" > 
-   <Coupled> true </Coupled>
-   <Min_iterations> 3 </Min_iterations>  
-   <Max_iterations> 20 </Max_iterations> 
-   <Tolerance> 1e-10 </Tolerance> 
-
-   <Density> 1.0 </Density>                           <!-- g/cm^3 -->
-   <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
-   <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
-   
-    <Constitutive_model type="HolzapfelOgden-ModifiedAnisotropy"> 
-     <a> 590.0 </a>                                   <!-- dyne/cm^2 -->
-     <b> 8.023 </b>                                   <!-- no units -->
-     <a4f> 184720.0 </a4f>
-     <b4f> 16.026 </b4f>
-     <a4s> 24810.0 </a4s>
-     <b4s> 11.12 </b4s>
-     <afs> 2160.0 </afs>
-     <bfs> 11.436 </bfs>
-     <k> 100.0 </k>
-   </Constitutive_model>
-
-   <Dilational_penalty_model> ST91 </Dilational_penalty_model>
-   <Penalty_parameter>1.0e7</Penalty_parameter>
-
-   <Output type="Spatial" >
-     <Pressure> true </Pressure>
-     <Displacement> true </Displacement>
-     <Velocity> true </Velocity>
-     <Jacobian> true </Jacobian>
-     <Stress> true </Stress>
-     <Strain> true </Strain>
-     <Cauchy_stress> true </Cauchy_stress>
-     <Def_grad> true </Def_grad>
-     <VonMises_stress> true </VonMises_stress>
-   </Output>
-
-   <LS type="GMRES" >
-      <Linear_algebra type="fsils" >
-         <Preconditioner> fsils </Preconditioner>
-      </Linear_algebra>
-      <Tolerance> 1e-16 </Tolerance>
-      <Max_iterations> 1000 </Max_iterations> 
-      <Krylov_space_dimension> 50 </Krylov_space_dimension>
-   </LS>
-
-   <Add_BC name="top" > 
-      <Type> Dirichlet </Type> 
-      <Value> 0.0 </Value>
-   </Add_BC> 
-
-   <Add_BC name="endo" > 
-      <Type> Neu </Type> 
-      <Time_dependence> Unsteady </Time_dependence> 
-      <Temporal_values_file_path> endo_pressure.dat </Temporal_values_file_path> 
-      <Ramp_function> false </Ramp_function> 
-      <Follower_pressure_load> true </Follower_pressure_load> 
-   </Add_BC> 
-
-</Add_equation>
-
-</svFSIFile>
-
-
diff --git a/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml b/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml
index 86c03bae..044f91f8 100644
--- a/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml
+++ b/tests/cases/ustruct/LV_HolzapfelOgdenModifiedAnisotropy_passive/svFSIplus.xml
@@ -56,9 +56,8 @@
    <Density> 1.0 </Density>                           <!-- g/cm^3 -->
    <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
    <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
+   
+   <!-- <Solid_viscosity> 0.9 </Solid_viscosity> -->
    
     <Constitutive_model type="HolzapfelOgden-ModifiedAnisotropy"> 
      <a> 590.0 </a>                                   <!-- dyne/cm^2 -->
diff --git a/tests/cases/ustruct/LV_HolzapfelOgden_passive/result_001.vtu b/tests/cases/ustruct/LV_HolzapfelOgden_passive/result_001.vtu
index e6372bfd..6c6c35a7 100644
--- a/tests/cases/ustruct/LV_HolzapfelOgden_passive/result_001.vtu
+++ b/tests/cases/ustruct/LV_HolzapfelOgden_passive/result_001.vtu
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:0301133ec85775f1ac57dcdc57b6a25a2c2c0ce923c50804d014cb2b2bc91b0a
-size 256550
+oid sha256:b062841ceadf91cf9893ee57852a0ed4d1afbe38e6092787a214fe154b7ce309
+size 256538
diff --git a/tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSI.xml b/tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSI.xml
deleted file mode 100644
index 81b523ea..00000000
--- a/tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSI.xml
+++ /dev/null
@@ -1,116 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<svFSIFile version="0.1">
-
-<GeneralSimulationParameters>
-  <Continue_previous_simulation> 0 </Continue_previous_simulation>
-  <Number_of_spatial_dimensions> 3 </Number_of_spatial_dimensions> 
-  <Number_of_time_steps> 1 </Number_of_time_steps> 
-  <Time_step_size> 1e-2 </Time_step_size> 
-  <Spectral_radius_of_infinite_time_step> 0.50 </Spectral_radius_of_infinite_time_step> 
-  <Searched_file_name_to_trigger_stop> STOP_SIM </Searched_file_name_to_trigger_stop> 
-
-  <Save_results_to_VTK_format> 1 </Save_results_to_VTK_format> 
-  <Name_prefix_of_saved_VTK_files> result </Name_prefix_of_saved_VTK_files> 
-  <!-- <Save_results_in_folder> results_svfsiplus </Save_results_in_folder> -->
-  <Increment_in_saving_VTK_files> 1 </Increment_in_saving_VTK_files> 
-  <Start_saving_after_time_step> 1 </Start_saving_after_time_step> 
-
-  <Increment_in_saving_restart_files> 50 </Increment_in_saving_restart_files> 
-  <Convert_BIN_to_VTK_format> 0 </Convert_BIN_to_VTK_format> 
-
-  <Verbose> 1 </Verbose> 
-  <Warning> 1 </Warning> 
-  <Debug> 1 </Debug> 
-
-</GeneralSimulationParameters>
-
-<Add_mesh name="msh" > 
-
-  <Mesh_file_path> mesh/mesh-complete.mesh.vtu </Mesh_file_path>
-
-  <Add_face name="endo">
-      <Face_file_path> mesh/mesh-surfaces/endo.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="epi">
-      <Face_file_path> mesh/mesh-surfaces/epi.vtp </Face_file_path>
-  </Add_face>
-
-  <Add_face name="top">
-      <Face_file_path> mesh/mesh-surfaces/top.vtp </Face_file_path>
-  </Add_face>
-
-  <Fiber_direction_file_path> mesh/fibersLongCells.vtu </Fiber_direction_file_path>
-  <Fiber_direction_file_path> mesh/fibersSheetCells.vtu </Fiber_direction_file_path>
-
-  <Mesh_scale_factor> 100.0 </Mesh_scale_factor> <!-- Convert from m to cm -->
-</Add_mesh>
-
-
-<Add_equation type="ustruct" > 
-   <Coupled> true </Coupled>
-   <Min_iterations> 3 </Min_iterations>  
-   <Max_iterations> 20 </Max_iterations> 
-   <Tolerance> 1e-10 </Tolerance> 
-
-   <Density> 1.0 </Density>                           <!-- g/cm^3 -->
-   <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
-   <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
-   
-    <Constitutive_model type="HolzapfelOgden"> 
-     <a> 590.0 </a>                                   <!-- dyne/cm^2 -->
-     <b> 8.023 </b>                                   <!-- no units -->
-     <a4f> 184720.0 </a4f>
-     <b4f> 16.026 </b4f>
-     <a4s> 24810.0 </a4s>
-     <b4s> 11.12 </b4s>
-     <afs> 2160.0 </afs>
-     <bfs> 11.436 </bfs>
-     <k> 100.0 </k>
-   </Constitutive_model>
-
-   <Dilational_penalty_model> ST91 </Dilational_penalty_model>
-   <Penalty_parameter>1.0e7</Penalty_parameter>
-
-   <Output type="Spatial" >
-     <Pressure> true </Pressure>
-     <Displacement> true </Displacement>
-     <Velocity> true </Velocity>
-     <Jacobian> true </Jacobian>
-     <Stress> true </Stress>
-     <Strain> true </Strain>
-     <Cauchy_stress> true </Cauchy_stress>
-     <Def_grad> true </Def_grad>
-     <VonMises_stress> true </VonMises_stress>
-   </Output>
-
-   <LS type="GMRES" >
-      <Linear_algebra type="fsils" >
-         <Preconditioner> fsils </Preconditioner>
-      </Linear_algebra>
-      <Tolerance> 1e-16 </Tolerance>
-      <Max_iterations> 1000 </Max_iterations> 
-      <Krylov_space_dimension> 50 </Krylov_space_dimension>
-   </LS>
-
-   <Add_BC name="top" > 
-      <Type> Dirichlet </Type> 
-      <Value> 0.0 </Value>
-   </Add_BC> 
-
-   <Add_BC name="endo" > 
-      <Type> Neu </Type> 
-      <Time_dependence> Unsteady </Time_dependence> 
-      <Temporal_values_file_path> endo_pressure.dat </Temporal_values_file_path> 
-      <Ramp_function> false </Ramp_function> 
-      <Follower_pressure_load> true </Follower_pressure_load> 
-   </Add_BC> 
-
-</Add_equation>
-
-</svFSIFile>
-
-
diff --git a/tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSIplus.xml b/tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSIplus.xml
index 81b523ea..3029b5b1 100644
--- a/tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSIplus.xml
+++ b/tests/cases/ustruct/LV_HolzapfelOgden_passive/svFSIplus.xml
@@ -56,9 +56,8 @@
    <Density> 1.0 </Density>                           <!-- g/cm^3 -->
    <Elasticity_modulus> 1.0e6 </Elasticity_modulus>   <!-- dyne/cm^2 -->
    <Poisson_ratio> 0.483333 </Poisson_ratio>
-   <Viscosity model="Constant" >
-         <Value> 0.0 </Value>
-      </Viscosity>
+   
+   <!-- <Solid_viscosity> 0.9 </Solid_viscosity> -->
    
     <Constitutive_model type="HolzapfelOgden"> 
      <a> 590.0 </a>                                   <!-- dyne/cm^2 -->