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مطالعۀ عددی تولید صدا در جریان حول سیلندر مربعی در زوایای حملۀ مختلف

مطالعۀ عددی تولید صدا در جریان حول سیلندر مربعی در زوایای حملۀ مختلف

Authors :
محمدرضايي, محسن
دهقان, علياكبر
موحدي, عليرضا
Source :
Journal of Applied & Computational Sciences in Mechanics; Spring/Summer2017, Vol. 28 Issue 2, p97-114, 18p
Publication Year :
2017

Abstract

Flow characteristics and sound pressure level in the acoustical far field and on the surface of a square cylinder at incidence are investigated for six angles of attacks. Flow around square cylinder is modeled using large eddy simulation method. The flow simulation is conducted using fluent commercial software. The results of the present study showed good agreement with the available experimental results. The minimum of drag coefficient, mean and root mean squared (rms) value of lift coefficient, and sound pressure level in acoustical far field occurred at 13o angle of attack which is due to the lowest values of fluctuating lift and drag forces at this angle of attack. The induced acoustic field is due to the fluctuating lift force acting on the rod. [ABSTRACT FROM AUTHOR]

Details

Language :
Persian
ISSN :
2008918X
Volume :
28
Issue :
2
Database :
Complementary Index
Journal :
Journal of Applied & Computational Sciences in Mechanics
Publication Type :
Academic Journal
Accession number :
126264131
Full Text :
https://doi.org/10.22067/fum-mech.v29i1.50734