Abstract
A mathematical model and a high-resolution numerical method for numerical simulation of turbulent separated flow in convergent–divergent nozzles are presented. A comparison between numerical calculations and experimental data for plane and axi-symmetric nozzles shows an efficiency and a reasonable accuracy of a numerical code based on the proposed model. A detailed computational study of separated nozzle flows has been conducted for nozzles with one or two circular slots. The possibility for increasing in thrust efficiency is shown under ground conditions due to decreasing of overexpanded flow zone.
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