Journal ArticleDOI
Steady and Unsteady Flow Simulations Using the Hybrid Flow Solver AVBP
Thilo Schönfeld,Michael Rudgyard +1 more
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TLDR
The unstructured flow solver AVBP of CERFACS is presented and various computational results are presented for a large spectrum of applications ranging from steady-state external aerodynamics to unsteady turbulent flows with and without combustion.Abstract:
The unstructured flow solver AVBP of CERFACS is presented. The basic concepts of the program are described, and various computational results are presented for a large spectrum of applications ranging from steady-state external aerodynamics to unsteady turbulent flows with and without combustion. The code solves the compressible Navier-Stokes equations on hybrid grids of arbitrary cell type. The code is built on a modular software library and has been ported to a wide range of parallel computers.read more
Citations
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Journal ArticleDOI
A thickened flame model for large eddy simulations of turbulent premixed combustion
TL;DR: In this article, a subgrid scale model for large eddy simulations of turbulent premixed combustion is developed and validated, based on the concept of artificially thickened flames, keeping constant the laminar flame speed sl 0.
Journal ArticleDOI
Development of High-Order Taylor-Galerkin Schemes for LES
Olivier Colin,Michael Rudgyard +1 more
TL;DR: The implementation and development of a new Taylor?Galerkin finite-element scheme within an unstructured/hybrid, parallel solver for unsteady LES is described, which is third-order in space and time and has a low dissipative error.
Journal ArticleDOI
LES of an ignition sequence in a gas turbine engine
TL;DR: In this article, a large eddy simulation (LES) of the first burner and the flame propagation from one burner to another is performed to simulate a complete ignition sequence in an annular chamber.
Journal ArticleDOI
Large-Eddy Simulation Inflow Conditions for Coupling with Reynolds-Averaged Flow Solvers
TL;DR: A method to provide LES inflow conditions through auxiliary, a priori LES computations, where an L ES inflow database is generated and modified to account for the unsteadiness of the interface flow statistics is defined.
Journal ArticleDOI
Exploration of combustion instability triggering using Large Eddy Simulation of a multiple injector Liquid Rocket Engine
Annafederica Urbano,Annafederica Urbano,Laurent Selle,Laurent Selle,Gabriel Staffelbach,Bénédicte Cuenot,Thomas Schmitt,Sébastien Ducruix,Sébastien Candel +8 more
TL;DR: In this article, the authors explored the possibility of analyzing combustion instabilities in small-scale rocket engines by making use of Large Eddy Simulations (LES) and found that the overall acoustic activity mainly results from the combination of one transverse and one radial mode of the combustion chamber, which are also strongly coupled with the oxidizer injectors.
References
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Proceedings ArticleDOI
A one-equation turbulence model for aerodynamic flows
Philippe R. Spalart,S. Allmaras +1 more
Journal ArticleDOI
Boundary conditions for direct simulations of compressible viscous flows
TL;DR: In this article, a boundary condition formulation for the Navier-Stokes equations is proposed, which is compatible with non-disjoint algorithms applicable to direct simulations of turbulent flows.
Journal ArticleDOI
Fully developed turbulent pipe flow: a comparison between direct numerical simulation and experiment
J. G. M. Eggels,F. Unger,M. H. Weiss,Jerry Westerweel,Ronald J. Adrian,Rainer Friedrich,Ftm Nieuwstadt +6 more
TL;DR: In this paper, the authors investigated the differences between fully developed turbulent flow in an axisymmetric pipe and a plane channel geometry, and compared the results obtained from a channel flow simulation.
Journal ArticleDOI
Vortex-driven acoustically coupled combustion instabilities
TL;DR: In this article, the authors investigated low-frequency vortex-driven combustion instability in the case of a multiple inlet combustor with dump and showed that lowfrequency instabilities are acoustically coupled and occur at the eigenfrequencies of the system.
Journal ArticleDOI
Development of High-Order Taylor-Galerkin Schemes for LES
Olivier Colin,Michael Rudgyard +1 more
TL;DR: The implementation and development of a new Taylor?Galerkin finite-element scheme within an unstructured/hybrid, parallel solver for unsteady LES is described, which is third-order in space and time and has a low dissipative error.
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