Preliminary developments towards a high-order and efficient LES code for propulsion applications

An advanced LES code, named SPARK-LES, is currently under development at CIRA within the frame of the HYPROB program. SPARK-LES is a structured, multiblock finite-volume code that solves the compressible Navier-Stokes equations with the final goal of performing accurate simulations of high-pressure combustion with suitable numerical/physical models. In this paper, the key features of the computational core are described. Centered high-order explicit and compact schemes for space integration are implemented; different solutions to improve numerical stability and robustness are analyzed and discussed. The capabilities of the code to reproduce the essential features of turbulent dynamics are proved by simulating the well-known Taylor-Green vortex problem.