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Benchmark Problem A0-3T

-Properties-
category
type
index
domain
object
note
A. exterior
0. basic
A0-3T
time
sphere with a point source
scattering

Geometry:
Spherical surface (1 m in diameter) in the free field.

Boundary condition:
The surface is rigid boundary. A piston source (S) is located at (0, 0, 3), and produces the impulse at t = 0.
Fig. A0-3T-1: Geometry of problem A0-3T (unit: m).
-Task A-

Directivity:
Sound pressure amplitude [Pa] of a scattered field at 181 points (R1), 2 m away from the sphere's center on the plane x = 0, located at 1 deg intervals (theta = 0, ..., 180 deg). At the octave-band mid-frequencies (f = 31.5, 63, 125, 250, 500, 1k, 2k, 4k Hz).

Dataform:
d-a0-3ta.xls