EFFECT OF ERUPTING BUBBLE DIAMETER ON GAS VELOCITY FLUCTUATION IN FREEBOARD OF A FLUIDIZED-BED

被引：0

作者：

HSIEH, YS ^{[1
]}

TAKI, A ^{[1
]}

HORIO, M ^{[1
]}

MUCHI, I ^{[1
]}

机构：

[1] NAGOYA UNIV,DEPT IRON & STEEL ENGN,NAGOYA,AICHI 464,JAPAN

来源：

KAGAKU KOGAKU RONBUNSHU | 1980年 / 6卷 / 02期

关键词：

Anemometers;

D O I：

10.1252/kakoronbunshu.6.204

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Axial and radial distribution of gas velocity fluctuation in the freeboard of a fluidized bed was measured by a hot-wire anemometer and analysed by a real-time correlator. Taking account of the analogy with steady turbulent jet behavior, experimental results are correlated by employing bubble diameter and height as parameters. An equation for T.D.H. estimation is proposed and close agreement is obtained with the values determined from Zenz's nomograph. These results clearly support a postulate that the decay of velocity fluctuation induced by bubble eruption at the bed surface is the major factor controlling the transport phenomena in freeboard. © 1980, Society of Chemical Engineers, Japan. All Rights Reserved.

引用

页码：204 / 206

页数：3

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