Correlation-Based Transition Transport Modeling for Three-Dimensional Aerodynamic Configurations

Grabe, Cornelia; Krumbein, Andreas

doi:10.2514/1.c032063

Cited by 53 publications

(16 citation statements)

References 13 publications

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“…43. As was expected and found before [97,102] the original γ-Re θ model does not yield the correct c f -distribution for these CF-dominated cases because it does not account for crossflow transition. The γ-Re θ -CF, however, yields the c f -distributions in very good agreement with the measured skin friction, qualitatively and quantitatively.…”

Section: Fig 41 Telfona Pathfinder Configuration: Simulated Transitimentioning

confidence: 53%

“…A different approach using ONERA's 1 C1 criterion [61] for crossflow transition and the Falkner-Skan and Cooke (FSC) equations [94][95] was published in [96][97]. While in [98] the concept of a 'cross flow Reynolds number' inspired by Owen and Randall [99] was investigated, in [100] a local helicity-based Reynolds number for the detection of crossflow in boundary layers was realized.…”

Section: Crossflow Transition In Transport Equation Approachesmentioning

confidence: 99%

“…First results for this configuration using the γ-Re θ and γ-Re θ -CF models were shown in [141]. [143] and [141] and new results were used and are depicted in Fig.…”

Section: Application Of Transport Equation Approachesmentioning

confidence: 99%

“…The second model formulation is the crossflow extension of the model developed at DLR, the γ-Re θ -CF model that additionally accounts for the effects of crossflow transition [96][97]102].…”

Section: Transition Prediction Using Transport Equation Approachesmentioning

confidence: 99%

See 3 more Smart Citations

Development and Application of Transition Prediction Techniques in an Unstructured CFD Code (Invited)

Krumbein

Krimmelbein

Grabe

et al. 2015

45th AIAA Fluid Dynamics Conference

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Section: Fig 41 Telfona Pathfinder Configuration: Simulated Transitimentioning

confidence: 53%

Section: Crossflow Transition In Transport Equation Approachesmentioning

confidence: 99%

“…First results for this configuration using the γ-Re θ and γ-Re θ -CF models were shown in [141]. [143] and [141] and new results were used and are depicted in Fig.…”

Section: Application Of Transport Equation Approachesmentioning

confidence: 99%

Section: Transition Prediction Using Transport Equation Approachesmentioning

confidence: 99%

See 2 more Smart Citations

Development and Application of Transition Prediction Techniques in an Unstructured CFD Code (Invited)

Krumbein

Krimmelbein

Grabe

et al. 2015

45th AIAA Fluid Dynamics Conference

Self Cite

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“…To investigate the transition effects the Menter SST computations were additionally carried out using a γ-Re θt transition transport model for the highest frequency of k=0.076. The approach of Menter et al 9 was implemented in DLR-TAU by Grabe et al 4 In a first step, the farfield values of the turbulent intensity were calibrated to match the turbulence level in front of the wing with the turbulent intensity measured in the SWG.…”

Section: Transition Effectsmentioning

confidence: 99%

Dynamic Stall Simulations on a Pitching Finite Wing

Kaufmann

Merz

Gardner

2016

34th AIAA Applied Aerodynamics Conference

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URANS computations were carried out on a pitching finite wing model using the finite volume solver DLR-TAU. The comparison with the experimental data reveals a good agreement, especially in the region of the first occurrence of stall. Discrepancies are observed in the blade tip region, where the flow in the numerical data shows a stronger separation along with larger hysteresis effects in contrast to the experiment. An investigation with different pitching frequencies revealed a change in the sequence of dynamic stall vortex formation in the spanwise direction. For the lowest frequency the propagation of the stall vortex starts at the wing tip and then spreads rootwards, whereas for the higher frequencies the first evolution of the dynamic stall vortex starts further inboard, subsequently propagating in tipward and rootward directions. An investigation using a γ-Re θt approach demonstrated that small differences can be attributed to transition, nevertheless these can give further insight in the physics of dynamic stall and improve the comparability with the experiment. A comparison with two-dimensional simulations shows strong similarities in the sections where the vortex starts to evolve and large differences in the surrounding areas.

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DLR project Digital-X: towards virtual aircraft design and flight testing based on high-fidelity methods

et al. 2015

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Numerical simulation is already an important cornerstone for aircraft design, although the application of highly accurate methods is mainly limited to the design point. To meet future technical, economic and social challenges in aviation, it is essential to simulate a real aircraft at an early stage, including all multidisciplinary interactions covering the entire flight envelope, and to have the ability to provide data with guaranteed accuracy required for development and certification. However, despite the considerable progress made there are still significant obstacles to be overcome in the development of numerical methods, physical modeling, and the integration of different aircraft disciplines for multidisciplinary analysis and optimization of realistic aircraft configurations. At DLR, these challenges are being addressed in the framework of the multidisciplinary project Digital-X (4/ 2012-12/2015). This paper provides an overview of the project objectives and presents first results on enhanced disciplinary methods in aerodynamics and structural analysis, the development of efficient reduced order methods for load analysis, the development of a multidisciplinary optimization process based on a multi-level/variable-fidelity approach, as well as the development and application of multidisciplinary methods for the analysis of maneuver loads.

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Correlation-Based Transition Transport Modeling for Three-Dimensional Aerodynamic Configurations

Cited by 53 publications

References 13 publications

Development and Application of Transition Prediction Techniques in an Unstructured CFD Code (Invited)

Development and Application of Transition Prediction Techniques in an Unstructured CFD Code (Invited)

Dynamic Stall Simulations on a Pitching Finite Wing

DLR project Digital-X: towards virtual aircraft design and flight testing based on high-fidelity methods

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