TY - JOUR

T1 - Numerical study of transonic flow in a channel at various back pressures

AU - Кузьмин, Александр Григорьевич

PY - 2025

Y1 - 2025

N2 - This paper addresses turbulent 2D airflow in a simple intake model. The numerical simulation is based on the system of Reynolds-averaged Navier–Stokes equations. Numerical solutions of the system are obtained with a finite-volume solver of second order accuracy on a fine computational mesh. The location of shock waves, across which flow parameters change abruptly, is analyzed at three supersonic inflow Mach numbers in a band of back pressure given at the exit of intake. The obtained solutions show the occurrence of non-uniqueness and self-excited oscillations. Transitions between different flow regimes are discussed. A comparison with experimental data available in the literature is made.

AB - This paper addresses turbulent 2D airflow in a simple intake model. The numerical simulation is based on the system of Reynolds-averaged Navier–Stokes equations. Numerical solutions of the system are obtained with a finite-volume solver of second order accuracy on a fine computational mesh. The location of shock waves, across which flow parameters change abruptly, is analyzed at three supersonic inflow Mach numbers in a band of back pressure given at the exit of intake. The obtained solutions show the occurrence of non-uniqueness and self-excited oscillations. Transitions between different flow regimes are discussed. A comparison with experimental data available in the literature is made.

KW - Turbulent transonic flow

KW - finite-volume solutions

KW - non-uniqueness

UR - https://www.mendeley.com/catalogue/8f91b80f-bef8-3679-a1b1-cdbf4f75cb14/

U2 - 10.2298/FIL2517965K

DO - 10.2298/FIL2517965K

M3 - Article

VL - 39

SP - 5965

EP - 5971

JO - Filomat

JF - Filomat

SN - 0354-5180

IS - 17

ER -