Abstract
Assessment and validation of RANS turbulence models have been conducted for the separation flow in through-type pintle nozzle through the comparison between computational results and experimental results. Models of pintle nozzle and numerical conditions are selected from preceding research. The separation flow occurred in nozzle flow because of shock wave of pintle. Precision simulation of separation flow in pintle nozzle is important to analyze the dynamic characteristics and nozzle thrust. The simulation tests of grid dependency and turbulent model are conducted to determine the proper method of pintle nozzle analysis. Each results are compared with experimental data. Grid dependency simulation is set up by changing the base size of grid between 0.6mm and 0.09mm. Turbulent models are selected from Spalart-Allmaras, κ -ε and κ -ω model that be used in general. Through this study, proper numerical simulation method of pintle nozzle will be suggested.
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