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Appl. Sci. 2018, 8(4), 519; https://doi.org/10.3390/app8040519

Aerodynamic Analysis and Noise-Reducing Design of an Outside Rear View Mirror

1
Electric Powertrain R&D Center, Korea Automotive Technology Institute, 201 Gwahakseo-ro, Guji-myon, Dalseong-gum, Daegu 43011, Korea
2
Department of Mechanical Engineering, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul 04107, Korea
*
Author to whom correspondence should be addressed.
Received: 18 February 2018 / Revised: 16 March 2018 / Accepted: 23 March 2018 / Published: 29 March 2018
(This article belongs to the Section Mechanical Engineering)
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Abstract

The outside rear view mirror (OSRVM) is installed on the exterior of vehicles to secure the side and rear views of the vehicle, but its extruded design causes unwanted aerodynamic noise and vibration during driving. In this study, additional line holes (inner dents) are made on the inner and outer edges of the mirror housing without a reduction in size in order to enhance the aerodynamic flow and noise around the mirror. Based on computational fluid dynamics (CFD) analysis, this study compares the aerodynamic characteristics of the original and modified mirror models. The comparative analyses verify that the proposed OSRVM model with the inner ducts dramatically improves the velocity profiles and sound pressure levels. View Full-Text
Keywords: airflow; aerodynamic noise; passenger vehicle; outside rear-view mirror (OSRVM); side-view mirror; computational fluid dynamics (CFD) airflow; aerodynamic noise; passenger vehicle; outside rear-view mirror (OSRVM); side-view mirror; computational fluid dynamics (CFD)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Chu, Y.-J.; Shin, Y.-S.; Lee, S.-Y. Aerodynamic Analysis and Noise-Reducing Design of an Outside Rear View Mirror. Appl. Sci. 2018, 8, 519.

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