Experimental Study on the Natural Convective Heat Transfer Characteristics of Ferrofluid for Concentric Annuli under Rotating Magnetic Field

被引：0

作者：

Kim, Hyung-Jin ^{[1
]}

Seo, Jae-Hyeong ^{[1
]}

Kim, Dae-Wan ^{[1
]}

Lee, Moo-Yeon ^{[2
]}

Seo, Lee-Soo ^{[2
]}

机构：

[1] Dong A Univ, Grad Sch Mech Engn, Busan 604714, South Korea

[2] Dong A Univ, Dept Mech Engn, Busan 604714, South Korea

来源：

JOURNAL OF THE KOREAN MAGNETICS SOCIETY | 2013年 / 23卷 / 02期

关键词：

rotating magnetic field; concentric annuli; magnetic field strength; ferrofluid; natural convection;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The objective of this study is experimentally to investigate natural convective heat transfer characteristics of the ferrofluid for a concentric annuli under rotating magnetic field with variations of the revolution and the magnetic field strength. The rotating magnetic field was provided by induction motor with 6 poles and 3 phases and the revolution and the magnetic field strength were controlled by an inverter driver and a voltage meter, respectively. Temperatures of the inner pipe and the outer pipe in the tested concentric annuli were maintained at 30 degrees C and 25 degrees C, respectively, during the test and the direction of the rotating magnetic field was a counterclockwise. As a result, the natural convective heat transfer characteristics of the ferrofluid for a concentric annuli were increased with the rise of the revolution and magnetic field strength due to the increased heat dissipation between hot side and cold side of the concentric annuli.

引用

页码：77 / 81

页数：5

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