C²A²S²E (AS-CAS)

Center for Computer Applications in AeroSpace Science and Engineering

Numerical simulation of the flow around an A380
Pressure distribution on an A380 and on a cut through the unstructured grid
Scale-resolved simulation of the turbulent flow over a trailing-edge flap in landing configuration
Multi-disciplinary simulation of a gust encounter
Simulation of a delta wing configuration using an adaptive, higher-order discontinuous Galerkin method
Simulation of a three-component aileron
Rapid prediction of aerodynamic loads over the flight-envelope for a wing with two flaps by utilizing reduced-order models

The C²A²S²E department’s main activity is the development of numerical methods and processes for the multi-disciplinary simulation and optimization of aircraft.  In addition to the development of physical models for complex flows and cutting-edge solution algorithms, the department is also active in the development of efficient optimization strategies covering all relevant disciplines, as well as developing surrogate models of higher fidelity methods. The customization of numerical methods for optimal efficiency on high-performance computer clusters is of particular importance to the department. The hybrid flow-solver developed at C²A²S²E is routinely used for a wide range of simulations in both research and industry. The department is also involved in the development of a system for the multi-disciplinary simulation and design of wind turbines.

Current Activities at C²A²S²E

  • Modeling of turbulent aerodynamic  flows for industrially relevant configurations using high-fidelity RANS models (Reynolds-Stress-Models) and scale-resolving approaches (hybrid RANS/LES, SAS, LES)
  • Development of flexible methods for the simulation of laminar-turbulent transition
  • Development of advanced CFD methods for the simulation of turbulent flows around complex aircraft configurations at high Reynolds-Numbers on unstructured grids (multi-grid, implicit methods, higher-order methods, adaptation)
  • Development of a next-generation CFD solver (modern data-layout, multi-level parallelization, combination of different solution methods, expanded application scope)
  • Tailoring the developed solution algorithms to the effective use of massively-parallel cluster architectures with highly efficient processor communication
  • Detailed, multi-disciplinary maneuver simulations including the effects of aerodynamics, structure, flight-mechanics and –control, as well as the modeling of control surfaces
  • Development of aerodynamic and multi-disciplinary optimization methods (adjoint methods, surrogate-model based optimization)
  • Development of surrogate models for the efficient determination of aerodynamic data and loads over the whole flight envelope (reduced-order models, error-estimation)
  • Formulation of methods for the quantification of aerodynamic uncertainties by use of numerical simulations, leading to more robust aerodynamic designs
  • Development and deployment of an adaptable simulation environment for multi-disciplinary simulations and optimizations on highly parallel cluster architectures

Software Products / Research Tools

  • TAU
    Software for solving the RANS equations with a 2nd-order finite-volume discretization on hybrid grids. Established as a production-tool in the European aircraft industry and as a research-tool for new technologies in the aircraft research community

  • THETA
    A close relative of TAU, optimized for the solution of incompressible flow simulations; also serves as a platform for the study of physical models (turbulence, combustion, mixed-flows)

  • PADGE
    Research code for the solution of the RANS equations with adaptive, higher-order Discontinuous Galerkin methods on unstructured grids

  • FlowSimulator
    An adaptive simulation environment optimized for multi-disciplinary coupled simulations on highly-parallel cluster architectures

  • SMART
    A software toolbox for generating aerodynamic surrogate models, reduced-order models and variable fidelity models

Current Projects

  • Digital-X
  • AeroStruct
  • Perfect
  • SimBa
  • IDIHOM
  • UMRIDA
  • GASPI
  • Go4Hybrid

 

 


Contact
Prof.Dr. Norbert Kroll
German Aerospace Center

Institute of Aerodynamics and Flow Technology
, C²A²S²E Center for Computer Applications in AeroSpace Science and Engineering
Tel: +49 531 295-2440

Fax: +49 531 295-2914

E-Mail: Norbert.Kroll@dlr.de
Edna Aust
German Aerospace Center

Institute of Aerodynamics and Flow Technology
, C²A²S²E Center for Computer Applications in AeroSpace Science and Engineering
Tel: +49 531 295-2441

Fax: +49 531 295-2914

E-Mail: Edna.Aust@dlr.de
Dr.-Ing. Dieter Schwamborn
German Aerospace Center

Institute of Aerodynamics and Flow Technology
, C²A²S²E Center for Computer Applications in AeroSpace Science and Engineering
Tel: +49 551 709-2271

Fax: +49 551 709-2416

E-Mail: Dieter.Schwamborn@dlr.de
Martina Kessler
German Aerospace Center

Institute of Aerodynamics and Flow Technology
, C²A²S²E Center for Computer Applications in AeroSpace Science and Engineering
Tel: +49 551 709-2495

Fax: +49 551 709-2416

E-Mail: martina.kessler@dlr.de
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http://www.airbus.com/en/presscentre/pressreleases/pressreleases_items/07_05_29_Numerical_Simulation_Center.html
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Texte zu diesem Artikel
C²A²S²E - Newsletter (http://www.dlr.de/as/en/desktopdefault.aspx/tabid-4083/6455_read-17040/usetemplate-print/)
C²A²S²E - Simulation Center (http://www.dlr.de/as/en/desktopdefault.aspx/tabid-4083/6455_read-13577/usetemplate-print/)
C²A²S²E - Hochleistungsrechner für die Luftfahrtforschung beim DLR in Betrieb genommen (http://www.dlr.de/as/en/desktopdefault.aspx/tabid-127/1082_read-12509/usetemplate-print/)
Fotos Einweihung CASE Cluster (http://www.dlr.de/as/en/desktopdefault.aspx/tabid-4083/6455_read-12510/usetemplate-print/)