A numerical framework for the direct simulation, in the low-Mach number limit, of reacting and non-reacting transcritical flows is presented. The key feature are an efficient and detailed representation of the real fluid properties and an high-order spatial discretization. The latter is of fundamental importance to correctly resolve the largely non-linear behavior of the fluid in the proximity of the pseudo-boiling. The validity of the low-Mach number assumptions is assessed for a previously developed non-reacting DNS database of transcritical and supercritical mixing. Fully resolved DNS data employing high-fidelity thermodynamical models are also used to investigate the spectral characteristic as well as the differences between transcritical and supercritical jets.
|Title of host publication
|2018 AIAA Aerospace Sciences Meeting
|American Institute of Aeronautics and Astronautics (AIAA)
|Published - Jan 7 2018
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): 1975-03
Acknowledgements: This work is carried out with the support of the Italian Ministry of University and Research (MIUR) and of CCRC/KAUST 1975-03 CCF Subaward Agreement. The authors acknowledge the Italian Super-Computing Interuniversity Consortium CINECA for support and high-performance computing resources under Grant No.DL-3D-SC/ HP10C4YS8W.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.