Numerical investigations of hypersonic transition and massive separation past Orion capsule by DDES-Tr

Xiao, Zhixiang; Wang, Guangxing; Yang, Minmin; Chen, Lianzhong

doi:10.1016/j.ijheatmasstransfer.2019.03.119

Cited by 16 publications

(5 citation statements)

References 26 publications

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“…This model has been reworked in the HRL context [7] showing improved results and the capability of predicting transitional flows with the DDES model for the flow over a highly loaded Controlled Diffusion Airfoil (CDA). Xiao et al [8] also proposed the coupling of the classical DDES model with a one-equation 𝛾-transition model (introduced by Wang and Fu [9]) and computed the flow past the Orion capsule. Sørensen et al [10] and Sa et al [11] coupled a DES model with the two-equation 𝛾-𝑅𝑒 𝜃 transition model and showed improved results in the prediction transition over a circular cylinder, the DU-96-W-351 airfoil and the Eppler 387 airfoil.…”

Section: Introductionmentioning

confidence: 99%

Transitional Delayed Detached-Eddy Simulation for a Compressor Cascade: A Critical Assessment

Möller,

Tucker,

Wang

et al. 2024

Journal of Propulsion and Power

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The accurate prediction of transitional flows is crucial for the industrial turbomachinery design process. While a Reynolds-averaged Navier–Stokes approach inherently brings conceptual weaknesses, large-eddy simulation will still be too expensive in the near future to affordably analyze complex turbomachinery configurations. We introduce a transitional delayed detached-eddy simulation (DDES) model, namely, DDES-[Formula: see text], and analyze the numerical results of the compressor cascade V103. A comparison with the fully turbulent DDES approach emphasizes the benefit of coupling DDES with a transition model. Issues with undesired decay of modeled turbulent kinetic energy in the freestream are improved when running DDES-[Formula: see text] in combination with the synthetic turbulence generator method. The best results for DDES-[Formula: see text] are obtained when changing the inviscid flux solver blending from dynamic to constant mode. We show that DDES-[Formula: see text] is capable of predicting the transitional flow through a linear compressor cascade, but we also critically discuss the general concept and results.

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Section: Introductionmentioning

confidence: 99%

Transitional Delayed Detached-Eddy Simulation for a Compressor Cascade: A Critical Assessment

Möller,

Tucker,

Wang

et al. 2024

Journal of Propulsion and Power

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show abstract

“…Hodara and Smith (2017) presented another way to run DES-Tr while they combined the γ-Re θ model with a localized dynamic kinetic energy model (LDKM) [Kim and Menon (1999)]. Xiao et al (2019) considered the challenging hypersonic flow past the Orion capsule and therefore applied a threeequation k-ω-γ DDES model introduced by Wang and Fu (2009). Yin et al (2021) utilized an adaptive l 2 -ω DDES model motivated by the desire of a hybrid modelling approach without an additional transport equation for the intermittency factor.…”

Section: Introductionmentioning

confidence: 99%

On the Prediction of Separation-Induced Transition by Coupling Delayed Detached-Eddy Simulation with γ-Transition Model

Möller,

Tucker,

Wang

et al. 2023

European Conference on Turbomachinery Fluid Dynamics and Thermodynamics

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Powerful hybrid RANS/LES methods are gaining more attention for the prediction of transitional turbomachinery flow although the combination of these two worlds (hybrid RANS/LES and transition) is not well considered yet. Therefore, we propose a coupling of DDES and the γ-transition model. The intention behind this coupling is explained and illustrated with two test cases, namely the academic flat plate boundary layer test case with adverse pressure gradient and the T106C turbine cascade, which represent transitional flow with separation-induced transition. The fundamental behavior of the coupled DDES-γ is assessed by the flat plate test case. Further reaching analysis is done with the turbomachinery test case T106C. Both test cases helped to understand the model coupling and yield promising results for the DDES-γ model, while we showed, that the fully-turbulent DDES failed to capture relevant features of the transitional flow for low free-stream turbulence.

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“…This model has been reworked in the HRL context and published by Wang et al [7] which illustrates improved results and the capability of predicting transitional flows with the DDES model on a highly loaded Controlled Diffusion Airfoil (CDA). Xiao et al [8] also proposed the coupling of the classical DDES model with a one-equation 𝛾-transition model (introduced by Wang and Fu [9]) and computed the flow past the Orion capsule. Sørensen et al [10] and Sa et al [11] coupled a DES model with the two-equation 𝛾-𝑅𝑒 𝜃 transition model and also showed improved results in the prediction of the transition process.…”

Section: Introductionmentioning

confidence: 99%

Critical Assessment of a Transitional Delayed Detached-Eddy Simulation Model for the Prediction of the Linear Compressor Cascade V103

Möller

Tucker

Wang

et al. 2023

AIAA AVIATION 2023 Forum

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The accurate prediction of transitional flows is crucial for the industrial turbomachinery design process. While RANS inherently brings conceptual weaknesses, LES will be still too expensive in the near future to affordably simulate complex turbomachinery configurations. We introduce a transitional DDES model, namely DDES-𝛾, and analyze numerical results of the compressor cascade V103. A comparison with the fully turbulent DDES approach emphasizes the benefit of coupling DDES with a transition model. Issues with undesired decay of modelled turbulent kinetic energy in the free-stream are improved when running DDES-𝛾 in combination with the synthetic turbulence generator method. Best results for DDES-𝛾 are obtained when changing the inviscid flux solver blending from dynamic to constant mode. We show that DDES-𝛾 is capable to predict the transitional flow through a linear compressor cascade, but also critically discuss the general concept and results.

show abstract

Numerical investigations of hypersonic transition and massive separation past Orion capsule by DDES-Tr

Cited by 16 publications

References 26 publications

Transitional Delayed Detached-Eddy Simulation for a Compressor Cascade: A Critical Assessment

Transitional Delayed Detached-Eddy Simulation for a Compressor Cascade: A Critical Assessment

On the Prediction of Separation-Induced Transition by Coupling Delayed Detached-Eddy Simulation with γ-Transition Model

Critical Assessment of a Transitional Delayed Detached-Eddy Simulation Model for the Prediction of the Linear Compressor Cascade V103

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