FLOW REGIME TRANSITION AND PENETRATION DEPTH OF LARGE JETTING FLUIDIZED BED

GUO Qingjie; YUE Guangxi; ZHANG Jiyu; LIU Zhenyu

您当前的位置：

首页 >

文章列表页 >

FLOW REGIME TRANSITION AND PENETRATION DEPTH OF LARGE JETTING FLUIDIZED BED

更新时间：2025-12-10

- FLOW REGIME TRANSITION AND PENETRATION DEPTH OF LARGE JETTING FLUIDIZED BED
- CIESC Journal Issue 9, (2001)
- 作者机构：
  
  1. 清华大学热能工程系
  2. 中国科学院山西煤炭化学研究所煤转化国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 September 2001，
  
  Published：25 September 2001
- 稿件说明：
移动端阅览
GUO Qingjie, YUE Guangxi, ZHANG Jiyu, et al. FLOW REGIME TRANSITION AND PENETRATION DEPTH OF LARGE JETTING FLUIDIZED BED[J]. CIESC Journal, 2001, (9).
DOI：

GUO Qingjie, YUE Guangxi, ZHANG Jiyu, et al. FLOW REGIME TRANSITION AND PENETRATION DEPTH OF LARGE JETTING FLUIDIZED BED[J]. CIESC Journal, 2001, (9). DOI：

摘要

在高 8m、直径 0 .5m的大型射流流化床中

通过摄像分析法

研究了射流、喷流两种流型的转变 .结果表明在低静床高、大射流气速下易出现喷流 ;喷流出现时

功率谱主频射流气速曲线上出现一转折点 .转折点射流气速与摄像法得出的流型转变射流气速相同 .提出了射流、喷流流型转变关系式 .同时发现射流深度随射流气速变大而增大

结合二维射流床射流深度的研究结果

得出了射流深度的预测式

Abstract

In a 0.5 meter diameter semicircular jetting fluidized bed with 42mm diameter semicircular nozzle

the transition of flow regime and the penetration depth were investigated.The penetration depth was recorded by a National M-7 video camera and analyzed frame to frame on a Panasonic HD-100 player.There were two flow patterns of jet and spout in a large jetting fluidized bed with increasing jet gas velocity.Spout appeared when jet gas velocity was high and static bed height was relatively low.The results from processing the signals of pressure fluctuation by multistage power spectrum analysis showed that the major frequency of pressure fluctuation increased with jetting gas velocity.On the basis of the experimental data

an equation describing flow regime transition was presented.Meanwhile

experimental data showed that penetration depth increased with increasing of jetting gas velocity.A correlation to calculate penetration depth was also proposed.

关键词

Keywords

references

Views

134

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Thermo-oxidative degradation characteristics of TPT backsheet from end-of-life photovoltaic modules

Controlled synthesis of Bi2MoO6/MoO3 composite fibers via in-situ hydrothermal method and their high-efficiency photocatalytic hydrogen production performance

Hydrolysis reaction mechanism of CNCl on the surface of composite metal CuCr2O4

Prediction of biomass pyrolysis product yield based on machine learning algorithms

Thermo-gas-elastic coupling performance analysis of high-speed and high-temperature foil face seals

Related Author

No data

Related Institution

No data

⁰