Abstract

A numerical setup is presented which allows to study a circular jet flow configuration in which the nozzle is included in the simulation domain. Direct Numerical Simulations (DNS) are performed using up to 10 th order compact finite-difference schemes which are stabilized by applying a mild low-pass filter. A parallelization approach has been implemented which shows good weak and strong scaling behavior. At the inflow the Synthetic Eddy Method is employed to generate turbulent fluctuations in the nozzle boundary layer with prescribed statistics, which are imposed by a sponge (forcing) layer technique. The grid resolution is varied within the nozzle as well as in the jet-flow region in order to study its effect on the results. Comparison of results obtained at Reynolds number Re = 9050 and a Mach number Ma = 0.9 is made to previous studies excluding the nozzle and to recent nozzle-jet simulation results. The developed setup and the obtained results will serve as a basis for future studies including aeroacoustics.

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