*Heading
 Radiating boundary condition test for exterior air model for
 acoustic analysis of a muffler
** ----------------------------------------------------------------
** 
** PART INSTANCE: OuterAir-1
** 
*Node, input=muffler_extair_nodes.inp
*Element, type=AC3D20, input=muffler_extair_elem.inp
** ----------------------------------------------------------------
*Elset, elset=OuterAir-1_I1, generate
 1501,  2734,     1
*Solid Section, elset=OuterAir-1_I1, material=air
 1.,
** ----------------------------------------------------------------
*Elset, elset=_sphere1_S3, generate
2340, 2355,    1
*Elset, elset=_sphere1_S4, generate
 2664,  2734,     5
*Surface, name=sphere1
_sphere1_S3, S3
_sphere1_S4, S4
** ----------------------------------------------------------------
*Elset, elset=_sphere2_S3, generate
2036, 2051,    1
*Elset, elset=_sphere2_S4, generate
1979, 2035,    4
*Surface, name=sphere2
_sphere2_S3, S3
_sphere2_S4, S4
** ----------------------------------------------------------------
*Elset, elset=_cylinder_S6, generate
1501, 1957,   19
*Surface, name=cylinder
_cylinder_S6, S6
** ----------------------------------------------------------------
*Nset,nset=pressnodes
   3379,3380,3381,3382,3383,3384,3385,4693,8550
*Nset,nset=pressnode_3384
  3384
** ----------------------------------------------------------------
** 
** MATERIALS
** 
*Material, name=air
*Acousticmedium,bulkmodulus
 1.42e5,
*Density
 1.2,
** ----------------------------------------------------------------
** 
** STEP: Step-1
** 
*Step
 Step-1: Frequency Response 
*Steady State Dynamics, direct
 165.,
*Boundary
 pressnode_3384,8,8,1.0
*Simpedance,non=circ
 cylinder,0.7
*Simpedance,non=spher
 sphere1,0.7
*Simpedance,non=spher
 sphere2,0.7
*Output,field,op=new,frequency=1
*Node output
 U,POR
*Output,history,op=new,frequency=1
*Node file,nset=pressnodes,frequency=1
 COORD,POR,PPOR
*End step