Remove unused wall_collisions option from config docs

Project.toml

@@ -1,7 +1,7 @@
 name = "HallThruster"
 uuid = "2311f341-5e6d-4941-9e3e-3ce0ae0d9ed6"
 authors = ["Thomas Marks <[email protected]>"]
-version = "0.16.0"
+version = "0.16.1"
 
 [deps]
 DelimitedFiles = "8bb1440f-4735-579b-a4ab-409b98df4dab"

docs/src/config.md

@@ -19,7 +19,6 @@ Aside from these arguments, all others have  default values provided. These are
 - `anode_Te`: The electron temperature at the anode, in eV. Acts as a Dirichlet boundary condition for the energy equation. Defaults to `3.0`.
 - `cathode_Te`: The electron temperature at the cathode, in eV. Acts as a Dirichlet boundary condition for the energy equation. Defaults to `3.0`.
 - `wall_loss_model`: How radial losses due to sheaths are computed. Defaults to `ConstantSheathPotential(sheath_potential=-20.0, inner_loss_coeff = 1.0, outer_loss_coeff = 1.0)`, which is the loss term from LANDMARK case 1. Other wall loss models are described on the [Wall Loss Models](@ref) page.
-- `wall_collision_freq`: Extra "wall collisions" to be added to the total electron momentum transfer collision frequency inside of the channel.  Units of Hz. Defaults to `0.0`.
 - `anom_model`: Model for computing the anomalous collision frequency. Defaults to `TwoZoneBohm(1/160, 1/16)`. Further details on the [Anomalous Transport](@ref) page.
 - `transition_length`: Distance over which the transition between inside and outside the channel is smoothed. Affects wall losses as well as two-zone Bohm-like transport models.
 - `conductivity_model`: Model for the perpendicular electron thermal conductivity. Defaults to `Mitchner()`. Further details can be found on the [Electron Thermal Conductivity](@ref) page.

test/unit_tests/test_electrons.jl

@@ -31,12 +31,22 @@
     thruster = HallThruster.SPT_100
     transition_length = 0.0
 
-    wall_collision_freq = 1e7
-
-    config_landmark = (;anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.LandmarkElectronNeutral(), electron_ion_collisions = false, ncharge = 1, thruster, transition_length, wall_collision_freq = 1e7)
-    config_gk = (;anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.GKElectronNeutral(), electron_ion_collisions = true, ncharge = 1, thruster, transition_length, wall_collision_freq = 1e7)
-    config_complex = (;anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.ElectronNeutralLookup(), electron_ion_collisions = true, ncharge = 1, thruster, transition_length, wall_collision_freq = 1e7)
-    config_none = (;anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.NoElectronNeutral(), electron_ion_collisions = false, ncharge = 1, thruster, transition_length, wall_collision_freq = 1e7)
+    config_landmark = (;
+        anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.LandmarkElectronNeutral(),
+        electron_ion_collisions = false, ncharge = 1, thruster, transition_length
+    )
+    config_gk = (;
+        anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.GKElectronNeutral(),
+        electron_ion_collisions = true, ncharge = 1, thruster, transition_length,
+    )
+    config_complex = (;
+        anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.ElectronNeutralLookup(),
+        electron_ion_collisions = true, ncharge = 1, thruster, transition_length
+    )
+    config_none = (;
+        anom_model, propellant = HallThruster.Xenon, electron_neutral_model = HallThruster.NoElectronNeutral(),
+        electron_ion_collisions = false, ncharge = 1, thruster, transition_length
+    )
 
     Xe_0 = HallThruster.Xenon(0)