Solid Particle Swarm Measurement in Jet Fuel Based on Mie Scattering Theory and Extinction Method

Area of Science:

• Analytical Chemistry
• Fluid Dynamics
• Optical Physics

Background:

• Static detection methods for solid particles in jet fuel have limitations due to small and random sample sizes.
• Accurate particle characterization in fuels is crucial for performance and safety.

Purpose of the Study:

• To develop and validate a dynamic measurement technique for solid particles in jet fuel using large samples.
• To analyze the scattering characteristics of copper particles in jet fuel under dynamic flow conditions.
• To establish a relationship between light intensity measurements and particle parameters.

Main Methods:

• Utilized Mie scattering theory and the Lambert-Beer law to analyze particle scattering.
• Developed a prototype for multi-angle scattered and transmitted light intensity measurements.
• Employed the equivalent flow method to convert vortex flow rates to equivalent pipe flow rates.
• Conducted experiments with copper particles (0.5-10 μm) at varying concentrations (0-1 mg/L) and flow rates (187-310 L/min).

Main Results:

• Scattering signal intensity was found to decrease as the scattering angle increased.
• Both scattered and transmitted light intensities were observed to vary with particle size and mass concentration.
• Experimental data confirmed the relationship between light intensity and particle parameters.

Conclusions:

• The developed prototype demonstrates effective dynamic detection capabilities for solid particles in jet fuel.
• The study provides a robust method for analyzing particle characteristics in fuel under realistic flow conditions.
• The established relationship equations enhance the quantitative analysis of particle parameters.