Experimental investigation of an image-based method for determining the combustion temperature of aluminum particles

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Experimental investigation of an image-based method for determining the combustion temperature of aluminum particles

Huang, Liya / Cao, Xiangyu / Zhang, Jiarui / Yang, He / Zhang, Shuanbao

Abstract Aluminum is characterised by its high calorific value, stable performance, and abundant reserves. It is a commonly used additive in solid propellants that are widely used in aerospace and underwater propulsion applications. As aluminum is a key component of these solid propellants, combustion temperature measurement of aluminum particles is crucial in investigating their combustion characteristics. This paper presents a method to determine the combustion temperature of aluminum particles in solid propellants. A combination of radiation imaging and Monte Carlo probability simulation is applied in the proposed method. Further, a numerical model is established to determine the surface temperature of aluminum particles. The method is validated through numerical simulation considering a target with a pre-set temperature distribution, as well as a practical implementation in solid-propellant combustion experiments. Results of the experimental analysis establish the reliability of the proposed method and also demonstrate the method's ease of operation, good practicability, and potential for future application.

Highlights • A method to determine the combustion temperature of aluminum particles is proposed. • The proposed method is based on Planck's radiation law and Monte Carlo simulation. • The method validated through numerical simulation with pre-set temperature and experiments.