B0-2F

Benchmark Problems

Benchmark Problem B0-2F

-Properties-

category	type	index	domain	object	note
B. interior	0. basic	B0-2F	frequency	absorptive cubic cavity	scattering

Geometry:
Absorptive cubic cavity (1 m * 1 m * 1 m)

Boundary condition:
The absorbing coefficient of all faces is 0.2. A point source (S) is located at (0, 0, 0), assuming its stationary vibration with volume acceleration amplitude 1.0 m³/s².

Fig. B0-2F-1: Geometry of problem B0-2F (unit: m).

-Task A-

Distribution:
Sound pressure amplitude [Pa] at 101 points (R1), on the line x = 0, z = 0.5, located at 0.01 m intervals (y = -0.5, ..., 0.5). At the octave-band mid-frequencies (f = 31.5, 63, 125, 250, 500, 1k, 2k, 4k Hz).

Dataform:
d-b0-2fa.xls

Contribution:

-Task B-

Frequency response:
Sound pressure amplitude [Pa] at 3 points (0.5, 0.5, -0.5) (R2), (0, 0, 0.5) (R3) and (0.4, 0.3, 0.2) (R4). At the frequencies with 1 Hz intervals from 20 Hz to 4 kHz, or with 10 Hz intervals from 20 Hz to 4 kHz.

Dataform:
d-b0-2fb.xls

Contribution: