OPTIMIZATION OF PROFILED DIFFUSER BARRIER USING THE NEW MULTIIMPEDANCE DISCONTINUITIES MODEL

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MONAZAM M.R.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER) Year:2009 | Volume:3 | Issue:3 Page(s): 327-334

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Information Journal Paper

Title

OPTIMIZATION OF PROFILED DIFFUSER BARRIER USING THE NEW MULTIIMPEDANCE DISCONTINUITIES MODEL

Author(s)

MONAZAM M.R. | Issue Writer Certificate

Keywords

PROFILED NOISE BARRIER

DIFFUSION

OPTIMIZATION

MULTIPLE-IMPEDANCE DISCONTINUITIES

QUADRATIC RESIDUE DIFFUSER

Abstract

The paper describes an investigation about the application of the new multipleimpedance discontinuities model for optimizing profile diffuser barriers. The new MULTIPLE-IMPEDANCE DISCONTINUITIES model is much faster than the numerical method, thus it is used in an OPTIMIZATION process. The A-weighted insertion loss was used for the traffic noise spectrum.The result of OPTIMIZATION, which is done by simplex downhill method, showed that the chosen method combined with the appropriate cost function is both a fast and effective way to optimize a diffusive profiled barrier, improving the performance of the barrier in the whole frequency bandwidth of the reactive profiled barriers. The optimized barrier improves the A-weighted insertion loss of all different tested barriers including absorbent, quadratic residue sequence and random sequence barriers.The introduced OPTIMIZATION process in this investigation is fast, clear and flexible so that any different ribbed surfaces and dimensions utilized on any different T-profile barriers can be optimized. The parameter used to optimize is just simply the well depth sequence, which is easy to realize and practical to design.

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APA: Copy

MONAZAM, M.R.. (2009). OPTIMIZATION OF PROFILED DIFFUSER BARRIER USING THE NEW MULTIIMPEDANCE DISCONTINUITIES MODEL. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER), 3(3), 327-334. SID. https://sid.ir/paper/300751/en

Vancouver: Copy

MONAZAM M.R.. OPTIMIZATION OF PROFILED DIFFUSER BARRIER USING THE NEW MULTIIMPEDANCE DISCONTINUITIES MODEL. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER)[Internet]. 2009;3(3):327-334. Available from: https://sid.ir/paper/300751/en

IEEE: Copy

M.R. MONAZAM, “OPTIMIZATION OF PROFILED DIFFUSER BARRIER USING THE NEW MULTIIMPEDANCE DISCONTINUITIES MODEL,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER), vol. 3, no. 3, pp. 327–334, 2009, [Online]. Available: https://sid.ir/paper/300751/en

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