Validation study on external wind noise prediction using OpenFOAM / Mohamed Sukri Mat Ali ... [et al.]

Mat Ali, Mohamed Sukri and Shaharuddin, Nur Haziqah and Jalasabri, Jafirdaus and Mohd Sood, Anwar and Mansor, Shuhaimi (2018) Validation study on external wind noise prediction using OpenFOAM / Mohamed Sukri Mat Ali ... [et al.]. Journal of Mechanical Engineering (JMechE), SI 7 (1). pp. 111-126. ISSN 18235514

Abstract

Driven by the customer's demand for a low interior noise while keeping the cost of the car to a minimum, the direction for aerodynamic noise reduction is to mitigate its noise source generation. However, the aerodynamic noise generation is complex due to its turbulent nature. This paper presents a validation study in predicting the noise generation due to the turbulent flow near the A-pillar and it's estimated sound level if the sound source is transmitted inside the cabin through the side window glass. The case under study is a generic vehicle model, SAE type 4-fullback body, for its available data to be compared. The noise source is obtained from the numerical simulation using open source CFD packages, OpenFOAM and Curle’s equation is used to estimate the sound propagation. The interior sound pressure level is then estimated by assuming sound transmission loss using the law of theoretical frequency for all ranges of noise frequency. A good agreement of the sound pressure level (SPL) between the current calculations and previous experimental measurements are obtained for frequency ranges between 200 Hz to 2000 Hz. The different in the other frequency ranges is mainly due to the invalid assumption when applying the law of theoretical frequency at these typical frequency ranges.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Mat Ali, Mohamed Sukri
sukri.kl@utm.my
Shaharuddin, Nur Haziqah
UNSPECIFIED
Jalasabri, Jafirdaus
UNSPECIFIED
Mohd Sood, Anwar
UNSPECIFIED
Mansor, Shuhaimi
UNSPECIFIED
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > Mechanical and electrical engineering combined
T Technology > TJ Mechanical engineering and machinery > Robotics. Robots. Manipulators (Mechanism)
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Mechanical Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
UiTM Journal Collections: UiTM Journal > Journal of Mechanical Engineering (JMechE)
ISSN: 18235514
Volume: SI 7
Number: 1
Page Range: pp. 111-126
Keywords: OpenFOAM; Wind Noise; A-Pillar; SAE Fullback Body
Date: 2018
URI: https://ir.uitm.edu.my/id/eprint/41313
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