تحلیل امواج ضربه ای در تبدیل همگرا با استفاده از مدل های آزمایشگاهی و عددی

Formation of shock waves has high importance in study of supercritical flows. these waves are often found during supercritical flow in the non-prismatic channels. in the present study, values of depth and instantaneous velocity were measured in various points of shock waves observed in the straight-wall contraction for four froude numbers. numerical simulation of supercritical flow in the contraction was performed using rng k-? and rsm turbulence models of fluent software. in order to investigate the accuracy of the models in calculation of wave profile and wave velocity a comparison was also done between the results of numerical models and measured values for fr1=7.0. the average relative errors of the wave depth calculation using rng k-? and rsm turbulence models were 1.82% and 1.06%, respectively. also, for the wave velocity, the values were 2.25% and 1.44%, respectively. the results showed that the rsm model performed slightly better than rng k-? model in simulating shock waves.