elsA is a multi-application CFD simulation platform dealing with internal and external aerodynamics from the low subsonic to the high supersonic flow regime. The compressible 3-D Reynolds averaged Navier-Stokes equations for arbitrary moving bodies are solved by a cell centered finite-volume method with second order upwind or central space discretization with scalar or matrix artificial dissipation on multi-block structured meshes. A high flexibility in the multi-block approach is achieved in elsA through patched grid, Hierarchical Mesh Refinement and Chimera techniques. The discrete equations are integrated either by multistage Runge-Kutta schemes with implicit residual smoothing, or, which in general leads to a better efficiency, by backward Euler integration with implicit LU schemes. For time accurate computations, the implicit dual time stepping method or the Gear integration scheme are employed. Preconditioning is used for low speed flow simulations. A large variety of turbulence models are available, ranging from eddy viscosity to full differential Reynolds stress models, and including options for Detached Eddy Simulation (DES) and Large Eddy Simulation (LES). Various transition models are also available for complex geometry configurations. elsA software package includes an important software module dealing with aeroelasticity [8], [9]. Also, a module dealing with calculation of gradients by linearized equation or by adjoint solver techniques is very useful for aerodynamic optimization.

References in zbMATH (referenced in 39 articles )

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  1. Karbasian, Hamid R.; Vermeire, Brian C.: Gradient-free aerodynamic shape optimization using Large Eddy Simulation (2022)
  2. Busquet, Denis; Marquet, Olivier; Richez, François; Juniper, Matthew; Sipp, Denis: Bifurcation scenario for a two-dimensional static airfoil exhibiting trailing edge stall (2021)
  3. Gand, F.; Huet, M.: On the generation of turbulent inflow for hybrid RANS/LES jet flow simulations (2021)
  4. Morelli, Myles; Bellosta, Tommaso; Guardone, Alberto: Development and preliminary assessment of the open-source CFD toolkit SU2 for rotorcraft flows (2021)
  5. Biolchini, Romain; Daviller, Guillaume; Bailly, Christophe; Bodard, Guillaume: Temperature effects on the noise source mechanisms in a realistic subsonic dual-stream jet (2020)
  6. de Zordo-Banliat, M.; Merle, X.; Dergham, G.; Cinnella, P.: Bayesian model-scenario averaged predictions of compressor cascade flows under uncertain turbulence models (2020)
  7. Plante, Frédéric; Dandois, Julien; Beneddine, Samir; Laurendeau, Éric; Sipp, Denis: Link between subsonic stall and transonic buffet on swept and unswept wings: from global stability analysis to nonlinear dynamics (2020)
  8. Granados-Ortiz, Francisco-Javier; Pérez Arroyo, Carlos; Puigt, Guillaume; Lai, Choi-Hong; Airiau, Christophe: On the influence of uncertainty in computational simulations of a high-speed jet flow from an aircraft exhaust (2019)
  9. Mittal, Ketan; Dutta, Som; Fischer, Paul: Nonconforming Schwarz-spectral element methods for incompressible flow (2019)
  10. Paladini, Edoardo; Marquet, Olivier; Sipp, Denis; Robinet, Jean-Christophe; Dandois, Julien: Various approaches to determine active regions in an unstable global mode: application to transonic buffet (2019)
  11. Rahier, G.: Comparison of surface and volume integral methods for transonic propeller acoustic predictions (2019)
  12. Deck, Sébastien; Weiss, Pierre-Elie; Renard, Nicolas: A rapid and low noise switch from RANS to WMLES on curvilinear grids with compressible flow solvers (2018)
  13. Weiss, Pierre-Élie; Deck, Sébastien: On the coupling of a zonal body-fitted/immersed boundary method with ZDES: application to the interactions on a realistic space launcher afterbody flow (2018)
  14. Pinto, Runa Nivea; Afzal, Asif; D’Souza, Loyan Vinson; Ansari, Zahid; Mohammed Samee, A. D.: Computational fluid dynamics in turbomachinery: a review of state of the art (2017)
  15. Vanharen, Julien; Puigt, Guillaume; Vasseur, Xavier; Boussuge, Jean-François; Sagaut, Pierre: Revisiting the spectral analysis for high-order spectral discontinuous methods (2017)
  16. Arnault, A.; Dandois, J.; Foucaut, J.-M.: Comparison of stochastic estimation methods with conditional events optimization for the reconstruction of the flow around a supercritical airfoil in transonic conditions (2016)
  17. Beneddine, Samir; Sipp, Denis; Arnault, Anthony; Dandois, Julien; Lesshafft, Lutz: Conditions for validity of mean flow stability analysis (2016)
  18. Resmini, A.; Peter, J.; Lucor, D.: Sparse grids-based stochastic approximations with applications to aerodynamics sensitivity analysis (2016)
  19. Richez, F.; Leguille, M.; Marquet, O.: Selective frequency damping method for steady RANS solutions of turbulent separated flows around an airfoil at stall (2016)
  20. Todarello, Giovanni; Vonck, Floris; Bourasseau, Sébastien; Peter, Jacques; Désidéri, Jean-Antoine: Finite-volume goal-oriented mesh adaptation for aerodynamics using functional derivative with respect to nodal coordinates (2016)

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Further publications can be found at: http://elsa.onera.fr/publications.html