Fix Euler Jupyter notebook

Author: rdbisme

examples/Euler Jet.ipynb

@@ -7,8 +7,7 @@
       "outputs": [],
       "source": [
         "%load_ext autoreload\n",
-        "%autoreload 2\n",
-        "%matplotlib notebook\n"
+        "%autoreload 2"
       ]
     },
     {
@@ -29,8 +28,6 @@
         "from josie.bc import Dirichlet, Neumann, NeumannDirichlet\n",
         "from josie.geom import Line\n",
         "from josie.solver.euler.eos import PerfectGas\n",
-        "from josie.solver.euler.problem import Problem\n",
-        "from josie.solver.euler.schemes import Rusanov\n",
         "from josie.solver.euler.solver import EulerSolver\n",
         "from josie.solver.euler.state import Q\n",
         "\n",
@@ -41,7 +38,8 @@
         "right = Line([0.25, 0], [.25, 1])\n",
         "top = Line([0, 1], [0.25, 1])\n",
         "\n",
-        "\n",
+        "# EOS\n",
+        "eos = PerfectGas(gamma=1.4)\n",
         "\n",
         "# Params\n",
         "JET_CENTER = 0.5\n",
@@ -105,9 +103,17 @@
       "metadata": {},
       "outputs": [],
       "source": [
-        "# Solver\n",
-        "eos = PerfectGas(gamma=1.4)\n",
-        "scheme = Rusanov(eos)\n",
+        "# Scheme\n",
+        "from josie.solver.euler.schemes import Rusanov\n",
+        "from josie.solver.scheme.time import ExplicitEuler\n",
+        "\n",
+        "class MyScheme(Rusanov, ExplicitEuler): \n",
+        "    pass\n",
+        "\n",
+        "scheme = MyScheme(eos)\n",
+        "\n",
+        "\n",
+        "\n",
         "solver = EulerSolver(mesh, scheme)\n",
         "\n",
         "\n",
@@ -143,7 +149,6 @@
         "    dt = scheme.CFL(\n",
         "        solver.values, \n",
         "        solver.mesh.volumes, \n",
-        "        solver.mesh.normals,\n",
         "        solver.mesh.surfaces,\n",
         "        CFL,\n",
         "    )\n",