A Comprehensive Study of the Sigma Model in Low- and High-speed Flows
Paper i proceeding, 2023

The -DDES model has been explored in low- and high-speed flows. Results are compared to simulations using DDES with the shear layer adaptive LES length scale ΔSLA. It is shown that the use of the -DDES model accelerates the transition from RANS to LES in both low- and high-speed flows. Results from simulations of a low speed free shear layer flow and a supersonic base flow using -DDES is comparable to results of DDES with ΔSLA for the time-averaged velocity field and resolved Reynolds stresses. In simulations of transonic flow over the generic M219 cavity -DDES shows favorable results with regards to the prediction of sound pressure levels, overall sound pressure levels and Rossiter modes frequencies compared to DDES with ΔSLA.

Författare

Sebastian Arvidson

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Saab AB

Magnus Carlsson

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

AIAA SciTech Forum and Exposition, 2023


9781624106996 (ISBN)

AIAA SciTech Forum and Exposition, 2023
Orlando, USA,

Ämneskategorier

Teknisk mekanik

Strömningsmekanik och akustik

DOI

10.2514/6.2023-1035

Mer information

Senast uppdaterat

2024-08-01