多波长消光法粒径测量下限影响因素分析.pdfVIP

能源研究与信息

第

38

卷第

4

期Energy

Research

and

InformationVol.38No.42022

文章编号：1008

−

8857(2022)04

−

0230

−

06DOI:

10.13259/ki.eri.2022.04.007

多波长消光法粒径测量下限影响因素分析

吴文韬，周

骛，陈本廷，蔡小舒

（上海理工大学

颗粒与两相流测量研究所/上海市动力工程多相流动与传热重点实验室,

上海

200093）

摘要：介绍了根据Lambert−Beer定理并采用多波长消光法测量颗粒粒径分布的方法。提出了

基于数值模拟和数理统计对多波长消光法粒径测量下限进行估计的方法。通过数值模拟分析讨论

了入射光波长、颗粒相对折射率和透光率对粒径测量下限的影响。研究为多波长消光法粒径测量

在实际应用中的可行性提供了指导。

关键词：多波长消光法；Mie理论；粒径分布测量；测量下限

中图分类号：TP392文献标志码：A

Studyonthelowerlimitofparticlesizedistribution

measurementbymulti-wavelengthextinctionmethod

WU

Wentao，ZHOU

Wu，CHEN

Bentin，CAI

Xiaoshu

(Institute

of

Particle

and

Two-phase

Flow

Measurement/Shanghai

Key

Laboratory

of

Multiphase

Flow

and

Heat

Transfer

in

Power

Engineerin,

University

of

Shanghai

for

Science

and

Technology,

Shanghai

200093,

China)

Abstract：The

measurement

method

of

particle

size

distribution

by

multi-wavelength

extinction

based

on

Lambert-Beer

theorem

was

introduced.

An

approach

for

estimatin

the

lower

limit

of

particle

size

measurement

by

multi-wavelength

extinction

method

in

terms

of

numerical

simulation

and

mathematical

statistics

was

proposed.

The

influence

of

incident

wavelength,

relative

refractive

index

of

particles

and

light

transmittance

on

the

lower

limit

of

measurement

was

analyzed

and

discussed

via

numerical

simulation.

It