Fixed spelling error in Crank-Nicolson (no h) scheme thanks to (#485)

@mattfeldt

Author: brownbaerchen

pySDC/implementations/sweeper_classes/Runge_Kutta.py

@@ -477,7 +477,7 @@ class BackwardEuler(RungeKutta):
     nodes, weights, matrix = generator.genCoeffs()
 
 
-class CrankNicholson(RungeKutta):
+class CrankNicolson(RungeKutta):
     """
     Implicit Runge-Kutta method of second order, A-stable.
     """

pySDC/playgrounds/Allen_Cahn/AllenCahn_contracting_circle_standard_integrators.py

@@ -112,7 +112,7 @@ def run_imex_Euler(t0, dt, Tend):
     return err, radius, exact_radius
 
 
-def run_CrankNicholson(t0, dt, Tend):
+def run_CrankNicolson(t0, dt, Tend):
     """
     Routine to run particular SDC variant
 
@@ -202,8 +202,8 @@ def main_radius(cwd=''):
     radii['implicit-Euler'] = radius
     _, radius, exact_radius = run_imex_Euler(t0=t0, dt=dt, Tend=Tend)
     radii['imex-Euler'] = radius
-    _, radius, exact_radius = run_CrankNicholson(t0=t0, dt=dt, Tend=Tend)
-    radii['CrankNicholson'] = radius
+    _, radius, exact_radius = run_CrankNicolson(t0=t0, dt=dt, Tend=Tend)
+    radii['CrankNicolson'] = radius
 
     xcoords = [t0 + i * dt for i in range(int((Tend - t0) / dt))]
     plot_radius(xcoords, exact_radius, radii)
@@ -219,8 +219,8 @@ def main_error(cwd=''):
     # errors['implicit-Euler'] = err
     # err, _, _ = run_imex_Euler(t0=t0, dt=0.001/512, Tend=Tend)
     # errors['imex-Euler'] = err
-    err, _, _ = run_CrankNicholson(t0=t0, dt=0.001 / 64, Tend=Tend)
-    errors['CrankNicholson'] = err
+    err, _, _ = run_CrankNicolson(t0=t0, dt=0.001 / 64, Tend=Tend)
+    errors['CrankNicolson'] = err
 
 
 if __name__ == "__main__":

pySDC/projects/DAE/sweepers/rungeKuttaDAE.py

@@ -2,7 +2,7 @@
 from pySDC.implementations.sweeper_classes.Runge_Kutta import (
     RungeKutta,
     BackwardEuler,
-    CrankNicholson,
+    CrankNicolson,
     EDIRK4,
     DIRK43_2,
 )
@@ -171,7 +171,7 @@ class BackwardEulerDAE(RungeKuttaDAE, BackwardEuler):
     pass
 
 
-class TrapezoidalRuleDAE(RungeKuttaDAE, CrankNicholson):
+class TrapezoidalRuleDAE(RungeKuttaDAE, CrankNicolson):
     pass
 
 

pySDC/tests/test_sweepers/test_Runge_Kutta_sweeper.py

@@ -3,7 +3,7 @@
 SWEEPER_NAMES = [
     'ForwardEuler',
     'ExplicitMidpointMethod',
-    'CrankNicholson',
+    'CrankNicolson',
     'BackwardEuler',
     'ImplicitMidpointMethod',
     'RK4',
@@ -135,7 +135,7 @@ def test_order(sweeper_name, useGPU=False):
         'ExplicitMidpointMethod': 3,
         'ImplicitMidpointMethod': 3,
         'RK4': 5,
-        'CrankNicholson': 3,
+        'CrankNicolson': 3,
         'Cash_Karp': 6,
         'EDIRK4': 5,
         'ESDIRK53': 6,
@@ -221,7 +221,7 @@ def test_stability(sweeper_name, useGPU=False):
         'ExplicitMidpointMethod': False,
         'ImplicitMidpointMethod': True,
         'RK4': False,
-        'CrankNicholson': True,
+        'CrankNicolson': True,
         'Cash_Karp': False,
         'EDIRK4': True,
         'ESDIRK53': True,
@@ -338,7 +338,7 @@ def test_sweeper_equivalence(sweeper_name, useGPU=False):
 
 
 @pytest.mark.cupy
-@pytest.mark.parametrize("sweeper_name", ['BackwardEuler', 'CrankNicholson'])
+@pytest.mark.parametrize("sweeper_name", ['BackwardEuler', 'CrankNicolson'])
 def test_RK_sweepers_equivalence_GPU(sweeper_name):
     test_sweeper_equivalence(sweeper_name, useGPU=True)
 
@@ -357,5 +357,5 @@ def test_RK_sweepers_with_GPU(test_name, sweeper_name):
 
 if __name__ == '__main__':
     # test_rhs_evals('ARK54')
-    test_order('CrankNicholson')
+    test_order('CrankNicolson')
     # test_order('ARK54')