Study by the RANS/ILES method throttling influence on pressure pulsations in a multiple-module supersonic air intake

Using the RANS/ILES method, the influence of throttling of one of the modules in a three-module high-speed model air intake on the flow, level and spectra of pressure pulsations in each of the modules is analyzed. A brief description of the calculation method and the used boundary conditions is given. OASPL levels are obtained in air intake modules depending on the type of flow braking. The influence of throttling of one of the modules on the flow and features of 1/3-octave spectra in neighboring modules is revealed.