Future directions of high fidelity CFD for aerothermal turbomachinery analysis and design

GM Laskowski, J Kopriva, V Michelassi… - 46th AIAA fluid …, 2016 - arc.aiaa.org
Gas turbines are, and will continue to be, the backbone of narrow and wide body aircraft
propulsion. The main reason for the success of gas turbines is their power density, ie thrust …

Revisiting the spectral analysis for high-order spectral discontinuous methods

J Vanharen, G Puigt, X Vasseur, JF Boussuge… - Journal of …, 2017 - Elsevier
The spectral analysis is a basic tool to characterise the behaviour of any convection scheme.
By nature, the solution projected onto the Fourier basis enables to estimate the dissipation …

A stable Spectral Difference approach for computations with triangular and hybrid grids up to the 6th order of accuracy

A Veilleux, G Puigt, H Deniau, G Daviller - Journal of Computational …, 2022 - Elsevier
In the present paper, a stable Spectral Difference formulation on triangles is defined using a
flux polynomial expressed in the Raviart-Thomas basis up to the sixth-order of accuracy …

Generic and broadband non-linear time domain impedance boundary condition

R Roncen, JI Cardesa - Journal of Sound and Vibration, 2023 - Elsevier
An approach for modeling time-domain impedance boundary conditions (TDIBC) is
presented. Its implementation in numerical codes relies on the inverse Fourier transform to …

Comparison of various CFD codes for LES simulations of turbomachinery: from inviscid vortex convection to multi-stage compressor

V Brunet, E Croner, A Minot… - … Expo: Power for …, 2018 - asmedigitalcollection.asme.org
Some possible future High Fidelity CFD codes for LES simulation of turbomachinery are
compared on several test cases increasing in complexity, starting from a very simple inviscid …

Adjoint computations by algorithmic differentiation of a parallel solver for time-dependent PDEs

JI Cardesa, L Hascoët, C Airiau - Journal of computational science, 2020 - Elsevier
A computational fluid dynamics code is differentiated using algorithmic differentiation (AD) in
both tangent and adjoint modes. The two novelties of the present approach are (1) the …

Optimizing an acoustic liner by automatic differentiation of a compressible flow solver

JI Cardesa, R Fiévet, E Piot, H Deniau… - Journal of computational …, 2022 - Elsevier
The attenuation power of an acoustic liner is optimized by unsteady compressible flow
simulations that model the presence of the liner with a time-domain impedance boundary …

High-order numerical methods for unsteady flows around complex geometries

J Vanharen - 2017 - theses.hal.science
This work deals with high-order numerical methods for unsteady flows around complex
geometries. In order to cope with the low-order industrial Finite Volume Method, the …

Coherent structure tracking of the second Mack mode in transitional hypersonic boundary layers

R Hammachi, E Piot, H Deniau… - Journal of Physics …, 2024 - iopscience.iop.org
The natural transition of hypersonic boundary layers (HBLs) is often expressed in terms of
discrete modes and their linear stability. A frequent interpretation revolves around fast and …

Extension of the Spectral Difference method to combustion

T Marchal, H Deniau, JF Boussuge, B Cuenot… - arXiv preprint arXiv …, 2021 - arxiv.org
A Spectral Difference (SD) algorithm on tensor-product elements which solves the reacting
compressible Navier-Stokes equations (NSE) is presented. The classical SD algorithm is …