A ROUND BAFFLE-ABSORPTION MUFFLER

WANG Zuo-min. A ROUND BAFFLE-ABSORPTION MUFFLER[J]. ACTA ACUSTICA, 1987, 12(4): 292-299. DOI: 10.15949/j.cnki.0371-0025.1987.04.007

Citation:

WANG Zuo-min. A ROUND BAFFLE-ABSORPTION MUFFLER[J]. ACTA ACUSTICA, 1987, 12(4): 292-299. DOI: 10.15949/j.cnki.0371-0025.1987.04.007

Citation:

WANG Zuo-min. A ROUND BAFFLE-ABSORPTION MUFFLER[J]. ACTA ACUSTICA, 1987, 12(4): 292-299. DOI: 10.15949/j.cnki.0371-0025.1987.04.007

Abstract

The noise sources in an axisymmetric jet are located mainly near the nozzle, and its strength decreases continuely with increase of X/D. According to this theoretical result, a round baffle-absorption muffler was designed and studied in experiments. The muffler reduces mainly jet noise of which frequencies are higher than 1 kHz. It is advisable to design the front length in the muffler is 25 D. The muffler can be used not only for a exhausting jet, but also for a working jet.

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