同轴数字全息用于铝燃烧颗粒的测量研究

Translated title of the contribution: Measurement of Particle Size of Aluminum Combustion in Solid Propellant Using Digital In-line Holography

Bing Ning Jin, Zhi Xin Wang, Pei Jin Liu, Geng Xu

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

In order to obtain the particle sizes of three-dimensional dynamic combustion of aluminum particles in the solid propellant, a new method used digital in-line holography(DIH) techniques for measuring the size of aluminum particle during solid propellants combustion was studied.Under normal pressure and temperature, two propellants were measured with two magnification times (1.1 times and 2.7 times) DIH system, the particle size information of all aluminum combustion particles was extracted from the holographic reconstructed image, and the detailed parameters of particle size distribution were obtained by Log-Normal multi-peak fitting method. The experimental results show that: Based on the particle reconstruction hologram image, the measurement accuracy of particle size is greatly improved by interpolation method, and the relative measurement error can be reduced to 0.4% in the range of 10μm~200μm. The method can clearly obtain the information such as particle size distribution and average particle size of all the aluminum combustion particles in the range of 10μm~900μm, and it is proved that this method is suitable for refine measurement of the aluminum particles combustion in solid propellant. So, it can provide fine measuring means and important data support for inform aluminum and agglomeration combustion model and evaluate new propellant formulations.

Translated title of the contributionMeasurement of Particle Size of Aluminum Combustion in Solid Propellant Using Digital In-line Holography
Original languageChinese (Traditional)
Pages (from-to)1399-1408
Number of pages10
JournalTuijin Jishu/Journal of Propulsion Technology
Volume40
Issue number6
DOIs
StatePublished - 1 Jun 2019

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