Optimization of operation mode and design parameters of a finely-dispersed metallic liquid-alloy generator

Abstract

During the process of designing new devices for the high-speed metallization process, there appears the necessity to define the stable operation range and search for the optimum values of the operation mode and design parameters. This paper describes a process of optimization of a device made for depositing low-melting metal coatings, based on the rocket chamber operation principle. The paper presents an analysis of the objective function surface response metallizer operation performance. On the basis of this analysis the optimal values of fuel mass flow rate and excess oxidant ratio were determined. The choice of fuel and oxidizer throttling orifice cross-section areas was substantiated, the value of the throat cross-section for the metallizer flow-path was found. The expected performance of the designed device was also determined.

Keywords

• metallizer
• combustion chamber
• gas-dynamic flow-path
• combustion products
• liquid alloy
• operation performance
• mathematical model
• objective function
• variable parameters
• optimization
• throttling orifice
• chamber throat