Numerical Characterization of Entropy Noise With a Density Based Solver

Sathyanarayanan Chandramouli (1) , Romain Gojon (1) , Jens Fridh (1) , Mihai Mihaescu (1)

1 KTH - KTH Royal Institute of Technology [Stockholm]

In this work, dbnsTurbFoam, a new coupled density based solver, written in the framework of foam-extend, is considered. The solver is first assessed on two canonical compressible flow scenarios, namely the Sod’s shock tube and the ONERA S8 transonic channel. Results are compared with analytical formulations and experiments, respectively. 2-D Unsteady Reynolds Averaged Navier-Stokes simulations and 3-D Large Eddy Simulations of the flow within the passages of a geometrically simplified High Pressure Turbine Nozzle Guide Vane are then performed. Results are compared against experimental data in order to justify the geometrical simplifications made. Finally, the case of a sinusoidal temperature forcing at the inlet is considered in order to study the phenomenon of indirect combustion noise. Notably, the impact of the forcing on the vortex shedding dynamics and on the losses is discussed.

Keywords: LES; Indirect combustion noise, transonic blade passage,dbnsTurbFoam

Domains: Other

Sathyanarayanan Chandramouli, Romain Gojon, Jens Fridh, Mihai Mihaescu. Numerical Characterization of Entropy Noise With a Density Based Solver. 12th European Conference on Turbomachinery Fluid dynamics & Thermodynamics (ETC12), Apr 2017, Stockholm, Sweden. pp.1-12, ⟨10.29008/ETC2017-143⟩. ⟨hal-03205215⟩