reset
#{ r = 3e-2 }
#{ a = 40e-2}

# create points (vertex)
create vertex { r } 0 0 
create vertex { a } 0 0 
create vertex { a } { a } 0 
create vertex 0 { a } 0 
create vertex 0 { r } 0 
create vertex 0 0 0 

# create lines from points
create curve arc center vertex 6  5  1  
create curve vertex 1 2  
create curve vertex 2 3  
create curve vertex 3 4  
create curve vertex 4 5

# create surfaces from lines
create surface curve 2 3 4 5 1  

# regions
block 1 add surface 1 
block 1 name "S_domain"
nodeset 1 add curve 1  
nodeset 1 name "L_excite"

# mesh
block 1  element type quad8
surface 1  size 0.005
surface 1 scheme submap
mesh surface 1
surface 1 smooth scheme laplacian 
smooth surface 1

# export
export ansys cdb "domain.cdb"  overwrite