Update chapter2/monolithic_navierstokes_crp0.py

Co-authored-by: Jørgen Schartum Dokken <dokken92@gmail.com>

Author: akarve1507

chapter2/monolithic_navierstokes_crp0.py

@@ -80,7 +80,7 @@ def parse_args():
 (v, q) = ufl.TestFunctions(W)
 
 # --- parameters / RHS ---
-nu = fem.Constant(domain, PETSc.ScalarType(args.nu))
+nu = fem.Constant(domain, dolfinx.default_scalar_type(args.nu))
 eps_p = fem.Constant(domain, PETSc.ScalarType(args.eps_p))
 f_vec = fem.Constant(domain, np.zeros(mesh.geometry.dim, dtype=dolfinx.default_scalar_type))