(Example 1. See manual. )

echo -no
number_of_space_dimensions 2
materi_velocity
materi_stress
end_initia

options_mesh -fixed_in_space -fixed_in_space
options_inertia -no

node  0  0. 0.
node  1  2. 0.
node  2  5. 0.
node  3 -3. 0.5
node  4  0. 0.5
node  5  2. 0.5
node  6  5. 0.5
node  7 -3. 1.0
node  8  0. 1.0
node  9  2. 1.0
node 10  5. 1.0
element 0  -quad4 0 1 4 5
element 1  -quad4 1 2 5 6
element 2  -quad4 3 4 7 8
element 3  -quad4 4 5 8 9
element 4  -quad4 5 6 9 10

start_define
  lower_horizontal_edge   geometry_line 1
end_define
start_define
  upper_horizontal_edge   geometry_line 2
end_define
start_define
  middle_horizontal_edge  geometry_line 3
end_define
start_define
  left_vertical_edge      geometry_line 4
end_define
start_define
  middle_vertical_edge    geometry_line 5
end_define
start_define
  right_vertical_edge     geometry_line 6
end_define
start_define
  prescribed_edges        geometry_set  1
end_define

lower_horizontal_edge    0.0 0.0   5.0 0.0  0.01
upper_horizontal_edge   -3.0 1.0   5.0 1.0  0.01
middle_horizontal_edge  -3.0 0.5   0.0 0.5  0.01
left_vertical_edge      -3.0 0.5  -3.0 1.0  0.01
middle_vertical_edge     0.0 0.0   0.0 0.5  0.01
right_vertical_edge      5.0 0.0   5.0 1.0  0.01
prescribed_edges  -lower_horizontal_edge -upper_horizontal_edge -middle_horizontal_edge -left_vertical_edge -middle_vertical_edge

geometry_bounda_factor 4  0. 1. 0.

bounda_unknown 0  -prescribed_edges -velx -vely
bounda_time    0  0. 0. 1.e2 0.
bounda_unknown 1  -left_vertical_edge -velx
bounda_time    1  0. 1. 1.e2 1.
bounda_unknown 2  -right_vertical_edge -vely
bounda_time    2  0. 0. 1.e2 0.

group_type 0  -materi
group_materi_density 0  1.
group_materi_viscosity 0  1.e-2
group_materi_elasti_compressibility 0  1.e-2
group_materi_memory 0  -updated_without_rotation
group_integration_points 0  -minimal

post_point 1   0.8 0.1
print_filter 0  -post_point_dof -all -velx -vely

control_mesh_refine_globally           3  -h_refinement
control_mesh_refine_globally           4  -h_refinement

control_timestep                      10  0.01 1.
control_timestep_iterations           10  2
(
control_print                        10  -time_current -post_point_dof
)

target_item 0  -post_point_dof 1 -velx
target_value 0   -0.041 0.1
end_data
