The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2014
Filed:
Oct. 22, 2013
Honda Motor Co., Ltd., Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An aerodynamic noise reduction device reduces aerodynamic noise originating from a separation region located downstream of a step portion protruding from a surface of an object placed in an airflow. Since the step portion protrudes from the surface of the object placed in the airflow, aerodynamic noise is generated from the airflow separation region located downstream of the step portion. However, by forming an air discharge vent at the step portion at a position near a point, in the separation region, where a Reynolds stress is at its maximum and by discharging air from the air discharge vent toward the point where the Reynolds stress is at its maximum, the velocity gradient in the separated shear layer in the separation region is mitigated to decrease the maximum value of the Reynolds stress. The aerodynamic noise is thus effectively reduced.