Benchmark
Problems
Benchmark Problem B1-3F
-Properties-
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category
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type
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index
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domain
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object
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note
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B. interior
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1. practical
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B1-3F
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frequency
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reverberation room
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scattering
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Geometry: Irregularly shaped reverberation room (about 165 m3) with a point source.
Boundary condition:
The absorbing coefficient of all faces is 0.01. A point source (S1) is located at (2.45, 0.0, 1.38), assuming its stationary vibration with volume acceleration amplitude 1.0 m3/s2.
Fig. B1-3F-1:
Geometry of problem B1-3F (unit: m).
-Task A-
Distribution:
Sound pressure amplitude [Pa] at 53 points (R1) , on the line from (-0.73, 1.62, 1.20) to (6.71, 2.99, 1.20) located at 0.145 m intervals (coordinates of 53 points). At the octave-band mid-frequencies (f = 31.5, 63, 125, 250, 500, 1k, 2k, 4k Hz).
Dataform:
d-b1-3fa.xls
Contribution:
- [04/10/19] B1-3FA-01: FEM, Imoto, M.
-Task B-
Frequency response:
Sound pressure amplitude [Pa] at R2 (0.86, 2.14, 1.20). 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-b1-3fb.xls
-Task C-
Distribution:
Sound pressure amplitude [Pa] at 294 points(R3) , on the plane z = 1.20 (coordinates of 294 points). At the octave-band mid-frequencies (f = 31.5, 63, 125, 250, 500, 1k, 2k, 4k Hz).
Dataform:
d-b1-3fc.xls
Contribution:
- [06/03/13] B1-3FC-03: Measurement, Yamamura, K.
- [06/03/13] B1-3FC-02: FEM, Okamoto, N.
- [04/10/19] B1-3FC-01: FEM, Imoto, M.