Spin-up and Spin-Down Times of Rotational Air Flow Depended on Mean Air Velocity and Surface Roughness on Inner Surface in Cylindrical Vortex Chamber

被引：3

作者：

Ogawa, Akira ^{[1
]}

Murakami, Hiroyuki ^{[1
]}

机构：

[1] Nihon Univ, Coll Eng, Dept Mech Eng, Kooriyama City, Japan

来源：

JOURNAL OF THERMAL SCIENCE | 2004年 / 13卷 / 01期

关键词：

vortex chamber; spin-up time; spin-down time; transient response; surface roughness;

D O I：

10.1007/s11630-004-0008-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The spin-up time TA in the spin-up process and spin-down time TD in the spin-down process of rotational air flow in the cylindrical vortex chamber with three kinds of the artificial surface roughness were investigated One of the most different characteristics between the smooth and rough surface conditions was the spin-down time TD. Also the transient response of the tangential velocity on the spin-up process was analyzed numerically and this result was compared with the experimental results. The above stated results are reported here in detail.

引用

页码：46 / 55

页数：10