Convert water content from percent to a fraction in tian2019 composition model

CHANGELOG.md

@@ -16,9 +16,9 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - There is now a properties_output_size function, which returns the size of the output vector/array returned by the properties functions for a given properties input vector \[Menno Fraters; 2024-10-27; [#765](https://github.com/GeodynamicWorldBuilder/WorldBuilder/pull/765)\]
 - Added 2d and 3d versions of the properties function to the C wrapper \[Menno Fraters; 2024-10-27; [#765](https://github.com/GeodynamicWorldBuilder/WorldBuilder/pull/765)\]
 
-## Changed
-
-## Fixed
+### Changed
+- The tian2019 composition model now returns a mass fraction instead of a mass percentage. \[Daniel Douglas; 2024-11-12; [#767](https://github.com/GeodynamicWorldBuilder/WorldBuilder/pull/767)\]
+### Fixed
 
 ## [1.0.0]
 ### Added

doc/JOSS/1.0/paper.md

@@ -48,7 +48,7 @@ affiliations:
    index: 2
  - name: GEOMAR Helmholtz-Zentrum für Ozeanforschung, Kiel, Germany
    index: 3
- - name: Universiy of Florida, USA
+ - name: University of Florida, USA
    index: 4
  - name: Clemson University, USA
    index: 5

source/world_builder/features/oceanic_plate_models/composition/tian2019_water_content.cc

@@ -178,8 +178,9 @@ namespace WorldBuilder
                   const double slab_temperature = world->properties(position_in_cartesian_coordinates.get_array(), depth, {{{1,0,0}}})[0];
                   double partition_coefficient = calculate_water_content(lithostatic_pressure,
                                                                          slab_temperature);
-
-                  partition_coefficient = std::min(max_water_content, partition_coefficient);
+                  // The partition_coefficient is output as a percentage, but geodynamic modeling software
+                  // typically deal with fractions, so we divide by 100 below
+                  partition_coefficient = std::min(max_water_content, partition_coefficient) / 100;
 
                   for (unsigned int i = 0; i < compositions.size(); ++i)
                     {

source/world_builder/features/subducting_plate_models/composition/tian2019_water_content.cc

@@ -171,8 +171,9 @@ namespace WorldBuilder
               const double slab_temperature = world->properties(position_in_cartesian_coordinates.get_array(), depth, {{{1,0,0}}})[0];
               double partition_coefficient = calculate_water_content(lithostatic_pressure,
                                                                      slab_temperature);
-
-              partition_coefficient = std::min(max_water_content, partition_coefficient);
+              // The partition_coefficient is output as a percentage, but geodynamic modeling software
+              // typically deal with fractions, so we divide by 100 below
+              partition_coefficient = std::min(max_water_content, partition_coefficient) / 100;
 
               for (unsigned int i = 0; i < compositions.size(); ++i)
                 {

tests/gwb-dat/water_content_subducting_plate.dat

@@ -2,7 +2,7 @@
 # file. 
 # Now define parameters:
 # dim = 2
-# compositions = 1
+# compositions = 2
 # x y d T C0
 50e3 0e3 1e3
 50e3 0e3 4e3
@@ -26,4 +26,4 @@
 210e3 0e3 92.5e3
 210e3 0e3 95e3
 210e3 0e3 97.5e3
-210e3 0e3 100e3
+210e3 0e3 100e3

tests/gwb-dat/water_content_subducting_plate/screen-output.log

@@ -1,24 +1,24 @@
-# x z d T vx vz c0 tag 
-50e3 0e3 1e3 312.405 0 0 0  0
-50e3 0e3 4e3 430.229 0 0 0  0
-50e3 0e3 8e3 584.338 0 0 0  0
-50e3 0e3 11e3 695.831 0 0 0  0
-210e3 0e3 55e3 1322.25 0 2 0  1
-210e3 0e3 57.5e3 1203.62 0 2 0  1
-210e3 0e3 60e3 1034.33 0 2 0  1
-210e3 0e3 62.5e3 849.688 0 2 0  1
-210e3 0e3 65e3 697.68 0 2 0  1
-210e3 0e3 67.5e3 614.688 0 2 0  1
-210e3 0e3 70e3 616.639 0 2 0  1
-210e3 0e3 72.5e3 652.908 0 2 0  1
-210e3 0e3 75e3 687.783 0 2 0  1
-210e3 0e3 77.5e3 721.222 0 2 0  1
-210e3 0e3 80e3 753.193 0 2 0  1
-210e3 0e3 82.5e3 783.675 0 2 0  1
-210e3 0e3 85e3 812.658 0 2 0  1
-210e3 0e3 87.5e3 839.142 0 2 0  1
-210e3 0e3 90e3 863.691 0 2 0  1
-210e3 0e3 92.5e3 886.838 0 2 0  1
-210e3 0e3 95e3 908.585 0 2 0  1
-210e3 0e3 97.5e3 928.938 0 2 0  1
-210e3 0e3 100e3 947.908 0 2 0  1
+# x z d T vx vz c0 c1 tag 
+50e3 0e3 1e3 312.405 0 0 0 0.03  0
+50e3 0e3 4e3 430.229 0 0 0 0.01  0
+50e3 0e3 8e3 584.338 0 0 0 0.005  0
+50e3 0e3 11e3 695.831 0 0 0 0.02  0
+210e3 0e3 55e3 1322.25 0 2 0 0  1
+210e3 0e3 57.5e3 1203.62 0 2 0 0.00372427  1
+210e3 0e3 60e3 1034.33 0 2 0 0.00510104  1
+210e3 0e3 62.5e3 849.688 0 2 0 0.00689769  1
+210e3 0e3 65e3 697.68 0 2 0 0.01  1
+210e3 0e3 67.5e3 614.688 0 2 0 0.01  1
+210e3 0e3 70e3 616.639 0 2 0 0.005  1
+210e3 0e3 72.5e3 652.908 0 2 0 0.005  1
+210e3 0e3 75e3 687.783 0 2 0 0.005  1
+210e3 0e3 77.5e3 721.222 0 2 0 0.02  1
+210e3 0e3 80e3 753.193 0 2 0 0.02  1
+210e3 0e3 82.5e3 783.675 0 2 0 0.02  1
+210e3 0e3 85e3 812.658 0 2 0 0.02  1
+210e3 0e3 87.5e3 839.142 0 2 0 0.02  1
+210e3 0e3 90e3 863.691 0 2 0 0.02  1
+210e3 0e3 92.5e3 886.838 0 2 0 0.0191775  1
+210e3 0e3 95e3 908.585 0 2 0 0.0130946  1
+210e3 0e3 97.5e3 928.938 0 2 0 0.00908444  1
+210e3 0e3 100e3 947.908 0 2 0 0.00640881  1