Jornal Internacional de Avanços em Tecnologia
Acesso livre

Abstrato

On high-order simulations of high-speed flows and acoustics

Dimitris Drikakis

The presentation concerns the use of high-order and high-resolution methods as a tool for modelling high-speed flows and acoustics. In particular, we present implementation of the above techniques in conjunction with implicit Large Eddy Simulations (iLES) and Direct Direct Numerical Simulations (DNS). We show that increased accuracy achieved by these methods in transition, fully turbulent flow, shock boundary layer interaction and near-wall acoustic effects.

Relevant Image:

Direct numerical simulation of shock-turbulent boundary layer interaction at Mach 2.9 and Reδ=38737, based on the boundary layer thickness, using 9th order accurate methods. Isosurfaces of the QM-criterion (2U2∞ /δ2) coloured by the Mach number and 2D (x − z) contour plane of the density gradient magnitude �?�∇ρ�?� δ/ρ∞ in grayscale.