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http://dx.doi.org/10.4283/JKMS.2013.23.5.166

Numerical Analysis on Temperature Characteristics of the Voice-Coil for Woofer Speaker Using Ferrofluid  

Lee, Moo-Yeon (Department of Mechanical Engineering, Dong-A University)
Kim, Hyung-Jin (Department of Mechanical Engineering, Dong-A University)
Lee, Woo-Young (YoungChang System, LTD.)
Publication Information
Journal of the Korean Magnetics Society / v.23, no.5, 2013 , pp. 166-172 More about this Journal
Abstract
This article is to numerically investigate the temperature and heat transfer characteristics of the voice coil in the woofer speaker using ferrofluid with the input currents. The temperature and heat transfer of the major components of the woofer speakers with and without ferrofluid are calculated and analyzed with the increase of the input currents from 10 W to 50 W at an interval of 10W. As results, the temperature of voice coil is linearly increased with an increase of input currents. The temperature of the woofer speaker with ferrofluid is lower 51.0 % than that of the woofer speaker without ferrofluid at the condition of input current 40W and the required input current of the woofer speaker with ferrofluid is lower 42.5 % than that of the woofer speaker without ferrofluid at the condition of voice coil temperature 490 K. In addition, the heat transfer from voice coil to other components for woofer speaker with ferrofluid is higher 51.7 % than that for woofer speaker without ferrofluid.
Keywords
voice coil; woofer speaker; ferrofluid; temperature;
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