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Assessment and validation of RANS turbulence models are condu cted for the optimal analysis of supersonic converging-diverging nozzle through the comparison between computational results and experimental data. One/two equation turbulence closures such as Spalart-Allmaras, RNG k-e, and k-ω SST are employed to simulate the two-dimensional nozzle flow. Computational results with the turbulence models mentioned fairly well predict shock structure of the nozzle-inside and pressure distribution along the wall. Especially, SST model among the employed ones shows the best agreement to experimental results.   -     ,        . Boussinesq   RANS  2   , Spalart-Allmaras, RNG k-e,  k-ω SST   .              ,   SST      .Key Words: Supersonic Converging-Diverging Nozzle( - ), Gas Dynamics(), Spalart-Allmaras Model(Spalart-Allmaras ), RNG k-e Model(RNG k-e ), k-ω SST Model(k-ω SST ), Overexpanded(), Shock()

Assessment and Validation of Turbulence Models for the Optimal Computation of Supersonic Nozzle Flow