Heat Transfer Enhancement in Ventilated Brake Disk Using Double Airfoil Vanes

Autor:	Amir Nejat, Mohamad Aslani, Ehsan Mirzakhalili, R. Najian Asl
Rok vydání:	2011
Předmět:	Fluid Flow and Transfer Processes Airfoil Materials science business.industry Heat transfer enhancement Brake Heat transfer General Engineering General Materials Science Mechanics Computational fluid dynamics Condensed Matter Physics business
Zdroj:	Journal of Thermal Science and Engineering Applications. 3
ISSN:	1948-5093 1948-5085
DOI:	10.1115/1.4004931
Popis:	The aim of this research is to enhance the heat transfer of ventilated brake disks using modified vanes. The investigated braking scenario is a hold braking deceleration during a downhill drive. A simple model for computing the steady state vane’s temperature is presented. The heat transfer coefficient (HTC) of the brake disk’s ventilation is estimated by means of a verified CFD computation. A novel design for the vanes is proposed using an airfoil profile to improve the air pumping efficiency increasing the flow velocity between vanes. For further improving the ventilating capacity, a secondary airfoil vane is introduced to the primary airfoil vane design. The computed results estimate 17% to 29% improvement in HTC number for new vane design at different disk’s angular velocities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2f6954d1574da074b64d76ab53be08df https://doi.org/10.1115/1.4004931 Zobrazit plný text záznamu