Experimental Study of Heating Fluid between Two Concentric Cylinders with Cavities  

作　　者：Hiromitsu HAMAKAWA Hiroyuki MORI Makoto IINO Masaaki HORI Mizuho YAMASAKI Toshiaki SETOGUCHI 

机构地区：[1]Department of Mechanical Engineering,Oita University [2]EBARA Kyushu Co.,Ltd. [3]Fanuc LTD [4]Kawasaki Heavy Industries,Ltd. [5]Department of Mechanical Engineering,Saga University

出　　处：《Journal of Thermal Science》2008年第2期175-180,共6页热科学学报（英文版）

基　　金：a grant for scientific research from The Japan Securities Scholarship Foundation

摘　　要：In this paper, we are concerned with the heating fluid in the annular space between two concentric cylinders where the inner cylinder with cavities is rotated and the outer cylinder is at rest. The effects of cavities of the inner cylinder on the heating fluid and the cavitation behavior are examined. We measured the flow rate, rotating speed of rotor, friction torque, temperature rise and pressure drop between inlet and outlet of this device. The flow rate of water ranged from 0.42×10^-4 to 4.59×10^-4 ma/s at the inlet. The friction torque and the quantity of heat of the inner cylinder with cavities were larger than the case of no cavities, and they increased as the rotating speed of inner cylinder increased. The efficiency was close to about 1 as the rotating speed of inner cylinder increased. The behavior of cavitation in the cavity on the surface of inner cylinder was discussed.

关 键 词：Viscous Flow Shear Flow Concentric Annulus CAVITY Frictional Heating CAVITATION 

分 类 号：TK123[动力工程及工程热物理—工程热物理]