Mesoscale Surface Combustion Modeling of Metalized Solid Fuel

Hong-Suk Choi; SangYeop Han; Jai-ick Yoh

doi:10.6108/JPNE.2024.4.1.001

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2024 Vol.4, Issue 1 Next Page

Mesoscale Surface Combustion Modeling of Metalized Solid Fuel

30 November 2024. pp. 1-13

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Abstract

We have revisited the complex surface burning of metalized energetic substances where the micro and nano metal particles and oxidizers chemically interact in the inert binder confinement. Both thermal and interfacial behaviors of the particles on the burning front during convective and diffusive thermal transport were investigated. Highly complex processes take place in three specific regions: the outflow region exposed to the ambient air consists of hot product gases with gasified metal oxides, the in-between melt layer comprised of reacting particles in condensed phase, and the inner region unreacted while kept at temperature below the melting point. We focus on the melt layer undergoing chemical reactions of a mixture of zirconium and potassium perchlorate, also known as the NASA Standard Initiator (NSI). The complex interface evolution is tracked via the level sets, and the finite chemical reaction rate law is constructed based on the calorimetry data for determining the activation energy and heat of reaction. Both slow and fast reactions are investigated to address the mesoscale effects of thermochemical and thermomechanical behaviors of metalized energetic substances that involve multi-physical interactions amongst metals, oxides, binder, and ambient air. The findings elucidate that there exists a strong competition between the hydrodynamic pressure induced from hot product gas generation and the interfacial interactions associated with deforming particles inside the melt layer during combustion.

Keywords

Metalized solid fuel

Burning surface

Melt layer

Level-set method

Condensed phase combustion

Mesoscale

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Information

Publisher :The Korean Society of Propulsion Engineers
Publisher(Ko) :한국추진공학회
Journal Title :Journal of Propulsion and Energy
Journal Title(Ko) :한국추진공학회 영문지
Volume : 4
No :1
Pages :1-13
Received Date : 2022-08-22
Revised Date : 2023-02-04
Accepted Date : 2023-02-07
DOI :https://doi.org/10.6108/JPNE.2024.4.1.001

Journal of Propulsion and Energy ISSN:2734-1887(Print) 2765-0049(Online) 한국추진공학회 영문지

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