PERFORMANCE OF PRD WELLED SURFACES IN T SHAPE NOISE BARRIERS FOR CONTROLLING ENVIRONMENTAL NOISE

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

MONAZAM M.R.; NADERZADEH M.; NASIRI PARVIN; MOMEN BE ELAH S.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT Year:2010 | Volume:3 | Issue:2 (8) Page(s): 213-226

Download Full-Text

Persian Verion

View:

916

Download:

Cites:

Information Journal Paper

Title

PERFORMANCE OF PRD WELLED SURFACES IN T SHAPE NOISE BARRIERS FOR CONTROLLING ENVIRONMENTAL NOISE

Author(s)

MONAZAM M.R. | NADERZADEH M. | NASIRI PARVIN | MOMEN BE ELAH S. | Issue Writer Certificate

Keywords

NOISE BARRIERQ2

RESISTIVE LAYERSQ3

T- SHAPE BARRIERQ3

PRIMITIVE ROOT DIFFUSERQ3

Abstract

Backgrounds and Objectives: There is a considerable notice in the use of NOISE BARRIERs in recent years. NOISE BARRIERs as a control noise solution can increase the insertion loss to protect receivers. This paper presents the results of an investigation about the acoustic efficiency of primitive root sequence diffuser (PRD) on environmental single T-shape barrier.Materials and Methods: A 2D boundary element method (BEM) is used to predict the insertion loss of the tested barriers. The results of rigid and with quadratic residue diffuser (QRD) coverage are also predicted for comparison.Results: It is found that decreasing the design frequency of PRD shifts the frequency effects towards lower frequencies, and therefore the overall A-weighted insertion loss is improved. It is also found that using wire mesh with reasonably efficient resistivity on the top surface of PRD improves the efficiency of the reactive barriers; however utilizing wire meshes with flow resistivity higher than specific acoustic impedance of air on the PRD top of a diffuser barrier significantly reduces the performance of the barrier within the frequency bandwidth of the diffuser. The performance of PRD covered T-shape barrier at 200 Hz was found to be higher than that of its equivalent QRD barriers in both the far field and areas close to the ground. The amount of improvement compared made by PRD barrier compared with its equivalent rigid barrier at far field is about 2 to 3 dB, while this improvement relative to barrier model .QR4. can reach up to 4- 6 dB.Conclusion: Employing PRD on the top surface of T-shape barrier is found to improve the performance of barriers compared with using rigid and QRD coverage at the examined receiver locations.

Cites

NOISE POLLUTION EVALUATION OF CITY CENTER OF ZANJAN BY GEOGRAPHIC INFORMATION SYSTEM (GIS)

References

No record.

Cite

APA: Copy

MONAZAM, M.R., NADERZADEH, M., NASIRI, PARVIN, & MOMEN BE ELAH, S.. (2010). PERFORMANCE OF PRD WELLED SURFACES IN T SHAPE NOISE BARRIERS FOR CONTROLLING ENVIRONMENTAL NOISE. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, 3(2 (8)), 213-226. SID. https://sid.ir/paper/146106/en

Vancouver: Copy

MONAZAM M.R., NADERZADEH M., NASIRI PARVIN, MOMEN BE ELAH S.. PERFORMANCE OF PRD WELLED SURFACES IN T SHAPE NOISE BARRIERS FOR CONTROLLING ENVIRONMENTAL NOISE. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT[Internet]. 2010;3(2 (8)):213-226. Available from: https://sid.ir/paper/146106/en

IEEE: Copy

M.R. MONAZAM, M. NADERZADEH, PARVIN NASIRI, and S. MOMEN BE ELAH, “PERFORMANCE OF PRD WELLED SURFACES IN T SHAPE NOISE BARRIERS FOR CONTROLLING ENVIRONMENTAL NOISE,” IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, vol. 3, no. 2 (8), pp. 213–226, 2010, [Online]. Available: https://sid.ir/paper/146106/en

Related Journal Papers