VELOCITY FIELD MEASUREMENT OF PARTICLE SWARM IN A SETTLER BY PARTICLE IMAGEVELOCIMETRY

李鑫钢; 杜英生; 余国琮; 周革

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VELOCITY FIELD MEASUREMENT OF PARTICLE SWARM IN A SETTLER BY PARTICLE IMAGEVELOCIMETRY

更新时间：2025-12-16

- VELOCITY FIELD MEASUREMENT OF PARTICLE SWARM IN A SETTLER BY PARTICLE IMAGEVELOCIMETRY
- CIESC Journal Issue 4, (1992)
- 作者机构：
  
  天津大学化学工程研究所,天津大学化学工程研究所,天津大学化学工程研究所,天津大学精密仪器系天津300072,天津300072,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 August 1992，
  
  Published：25 August 1992
- 稿件说明：
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李鑫钢, 杜英生, 余国琮, et al. VELOCITY FIELD MEASUREMENT OF PARTICLE SWARM IN A SETTLER BY PARTICLE IMAGEVELOCIMETRY[J]. CIESC Journal, 1992, (4).
DOI：

李鑫钢, 杜英生, 余国琮, et al. VELOCITY FIELD MEASUREMENT OF PARTICLE SWARM IN A SETTLER BY PARTICLE IMAGEVELOCIMETRY[J]. CIESC Journal, 1992, (4). DOI：

摘要

1引言在化工、环保、选矿等领域中，经常遇到大量的颗粒沉降问题。颗粒的沉降速度是两相流动中重要理论基础之、一。测量羊颗粒的沉降速度很容易，但对颗粒群很难测出其中每个粒子的速皮，而实际过程大都涉及颗粒群。对于沉降槽内的颗粒运动，一般按理想槽处理，不考虑流动不均匀及颗粒群的真实沉降速度，以及它们对夹带的影响”‘；或者用间歇沉降试验数据设计沉降设备’‘，’‘。本文的目的就是测量沉降槽内分区域颗粒群的统计平均速度，以期对沉降过程的研究和设计提供帮助。

Abstract

The statistical mean velocities of particle swarm in several regions of a settler were measured by using a method in such a way that the multi-exposure images were taken by Particle Image Velocimetry

then the films obtained were analyzed by optical Fourier transform to produce Younges fringe. The success of this experimental method was demonstrated by obtaining the velocity field of particle swarm in a settler

which may contribute significantly to the further understanding of the settling process.

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