NUMECA:
Has invested the effort in this work package to improve the efficiency of the explicit Flux Reconstruction solver
As first step to the development of a multi-level approach within the Flux Reconstruction solver for LES simulations, the extension of the explicit FR solver to handle non-conforming grids, both in geometrical (h-) and spectral (p-) senses, has been undertaken.
The Flux Reconstruction solver contains in-house tools to generate high-order elements near solid surfaces.
The parallel efficiency of the FR solver has been improved.
For IO postprocessing, the first task was the parallelization of the output subroutines.
DLR:
Contributed to WP 1 (General management) of TILDA by setting up and administrating the public and internal TILDA websites and a TILDA-wide email address.
In Task 2.1 (Implicit methods), DLR implemented SDIRK (single coefficient diagonally implicit Runge-Kutta) methods of order 2, 3, and 4.
In Task 3.2 DLR extended its scale-resolving DG code to locally refined meshes with hanging nodes.
ONERA:
Has presented a synthesis of the TILDA contribution during the CEAA workshop organized in Svetlogorsk (Russia) in September 2016.
Time implicit integration using inexact Newton methods have been developed initially in Aghora.
An adaptive strategy for the explicit VMSDG discretization of compressible Navier-Stokes equations is under development.
Local space p-adaptive method has been implemented.
The code Aghora is being optimized.
New computations for shock-boundary layer interactions on the 2D laminar and 3D turbulent transonic cases have been analyzed.
DASSAV:
Began implementing a VMS subgrid scale model based on an explicit filtering at the element level.
Started modifying the DES model to be used as a wall model in the VMS context.
Ran TC-F2 (Taylor Green Vortex) with DNS and existing LES models. Preliminary results were also obtained with the VMS model.
SAFRAN:
In order to analyze the flow solutions & the causes of numerical instabilities, new co-processing solutions have been implemented in ArgoDGM.
The work performed is based on ArgoDGM, a Discontinuous Galerkin software developed at CENAERO.
T106: Large Eddy Simulation of turbomachinery configurations with ArgoDGM of the T106-1 turbine were conducted.
RO37: A fully unstructured meshing strategy including the generation of boundary layers have been developed with an in-house code. The meshing process has been applied to the fully three dimensional NASA Rotor 37 test case and NS p2 simulations were conducted.
CERFACS:
The current involvement reads:
• D2.2-12: Validation of the non-conformal hp−adaptation
• D3.2-24b: Definition and validation of sensors for hp−adaptation
• D4.3-18: Extension of Antares to handle high-order solutions
• D5-18-P1: Intermediate report on TC-P1 (Jet with/without micro-jets – fluidic injection)
• D5-36-P1: Final, consolidated report on TC-P1 (Jet with/without micro-jets – fluidic injection)
CENAERO:
Task 2.2: Cenaero’s focus is on the capture of wake emanating from turbine blades.
Task 3.2: An indicator based on the balance of turbulent kinetic energy (TKE) has been devised.
Task 3.3: Application of wall-functions in the context of discontinuous Galerkin discretizations.
Task 4.1: Extension of our open-source mesh database MAdLib to conformal grid-adaptation on curvilinear grids.
UCL:
Firstly, a new shape quality measure has been designed for quantifying the error on the gradient of the finite element solution on linear simplices.
Secondly, three shape quality measure designed for linear elements has been generalized to curved elements. The first is the new quality measure.
In addition, developments have been made on curve mesh generation.
UNIBG:
Activities within Task 2.1 were mainly focused on a comprehensive assessment of the implicit time integration methods.
Investigated the impact on the accuracy and efficiency of a DNS (TC-F2) simulation of a low-Mach treatment.
Developed and implemented strategies for the initialization of the linear and non-linear iterative solvers.
Development and implementation of a p-adaptation strategy suited for unsteady simulations within the code MIGALE.
Implementation of procedures for the computation of flow statistics.
ICL:
Stabilization of Flux Reconstruction (FR) schemes via de-aliasing strategies and extreme-scale parallelization of PyFR.
Investigated how particular forms of FR correction can help stabilize under resolved DNS (ILES) of turbulent flows.
Rreleased several new versions of PyFR, adding amongst other features support for the Intel Xeon Phi.
TsAGI:
Task 1.3: TsAGI proposed to change test case "Noise suppressing Nozzle with chevrons" to Test case "Noise suppressing Nozzle with bypass".
Task 2.1: A theoretical investigation of implicit time stepping efficiency was conducted. 4th order DG scheme was used for spatial discretization.
Task 2.3: Navier-Stokes DG code was developed for K=1,2,3.
