Numerical simulation of high frequency instability induced by the distribution of gas-liquid scheme injectors in an experiment-scale Kero/GOX liquid rocket engine

2017 ◽  
Author(s):  
Kangkang Guo ◽  
Wansheng Nie ◽  
Yu Liu ◽  
Honghua Cai
Keyword(s):  
Numerical Simulation ◽  
High Frequency ◽  
Rocket Engine ◽  
Frequency Instability ◽  
Liquid Rocket Engine ◽  
Liquid Rocket

Numerical Simulation of the Spray Characteristics in Small Scale Liquid Rocket Engine Combustion Chamber

2011 ◽  
Vol 383-390 ◽  
pp. 7729-7733
Author(s):  
Na Zhao ◽  
Yong Gang Yu ◽  
Yu Qiang Wang
Keyword(s):  
Numerical Simulation ◽  
Surface Tension ◽  
Rocket Engine ◽  
Nozzle Diameter ◽  
Small Scale ◽  
Liquid Rocket Engine ◽  
Liquid Droplets ◽  
Liquid Propellant ◽  
Fluent Software ◽  
Liquid Rocket

The mathematical and physical model of the liquid propellant spray in straight nozzle was proposed for studying the performance characteristics of the small-scale liquid rocket engine. With the Fluent software, the numerical simulation was carried out. Sauter mean diameter (SMD) of the HAN-based liquid propellant (LP1846) in the engine combustor changing with spray pressure, nozzle diameter and the liquid surface tension were analyzed. The results indicate that: in the spray pressure region of 1.8MPa~3.0MPa, at a fixed spray pressure, the smaller is the nozzle diameter, the smaller is the droplets’ SMD and the relationship between the SMD and the nozzle diameter is approximately linearity; for the same nozzle diameter and spray pressure, the larger is the surface tension, the larger is the liquid droplets’ SMD.

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