( Homepage example: Eigen modes of 2d heat equation )

echo -no
number_of_space_dimensions 2
condif_temperature
end_initia

node 1  0 0
node 2  1 0
node 3  0 1
node 4  1 1
element 0  -quad4 1 2 3 4

geometry_line 1 0. 0. 1. 0.  0.01
geometry_line 2 1. 0. 1. 1.  0.01
geometry_line 3 1. 1. 0. 1.  0.01
geometry_line 4 0. 1. 0. 0.  0.01
geometry_set 1  -geometry_line 1 -geometry_line 2 -geometry_line 3 -geometry_line 4

bounda_unknown 0  -geometry_set 1 -temp
bounda_time    0  0.0 0. 100. 0.

group_type 0  -condif
group_condif_conductivity 0  0.1

control_mesh_refine_globally  1  -h_refinement
control_mesh_refine_globally  2  -h_refinement
control_mesh_refine_globally  3  -h_refinement
control_mesh_refine_globally  4  -h_refinement

control_timestep 10  1. 1.0
control_eigen    10  -matrix 10
(
control_print    10  -control_eigen_values -node_eigen
)

target_item  0   -control_eigen_values 0 0
target_value 0   0.00768589 1.e-4
end_data
