Scale-Adaptive Simulation with Artificial Forcing

Menter, F. R.; Garbaruk, A. V.; Smirnov, P. G.; Čokljat, Davor; Mathey, Fabrice

doi:10.1007/978-3-642-14168-3_20

Cited by 33 publications

(16 citation statements)

References 12 publications

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“…forcing). One possibility for such energy transfer is the usage of forcing terms as described in Menter et al [24], or the definition of an interface, where modelled energy is explicitly transferred to resolved energy through the generation of synthetic turbulence.…”

Section: Generic Examples and Discussionmentioning

confidence: 99%

“…The next step in the development of the SAS methodology is the inclusion of forcing terms to allow a transfer of modelled to resolved turbulence, thereby enforcing unsteadiness (Menter et al [24]). It is also believed that SAS models offer interesting characteristics for other hybrid RANS-LES combinations, like wall modelled LES, as they are better compatible with LES formulations than classical RANS models.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Part 1: Theory and Model Description

Menter

Egorov

2010

Flow Turbulence Combust

Self Cite

747

374

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The article gives an overview of the Scale-Adaptive Simulation (SAS) method developed by the authors during the last years. The motivation for the formulation of the SAS method is given and a detailed explanation of the underlying ideas is presented. The derivation of the high-Reynolds number form of the equations as well as the calibration of the constants is provided. The concept of SAS is explained using several generic examples and test cases. In a companion article, the model is applied to more complex industrial-type applications.

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Section: Generic Examples and Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Part 1: Theory and Model Description

Menter

Egorov

2010

Flow Turbulence Combust

Self Cite

747

374

View full text Add to dashboard Cite

show abstract

“…Although the SAS model is not as accurate as the LES model, it is less dependent on the mesh element resolution compared with the LES models and can capture the turbulence length scales more accurately than k-ω, k-ε or even Shear Stress Transport (SST) models [17]. Furthermore, Guilmineau and Queutey [18] showed that SST model cannot predict the maximum amplitude of oscillation in the upper category of oscillation.…”

Section: Methodsmentioning

confidence: 99%

Effect of a rigid wall on the vortex induced vibration of two staggered circular cylinders

Derakhshandeh

Arjomandi

Cazzolato

et al. 2014

Journal of Renewable and Sustainable Energy

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Vortex Induced Vibrations (VIV) plays a key role in a wide range of engineering applications including the extraction of renewable energy. In this paper, numerical studies of the phenomenon of VIV were conducted to investigate the flow behaviour around two identical circular cylinders. The upstream cylinder was located in the vicinity of a rigid wall and downstream one was mounted on an elastic support with one degree of freedom (1-DOF). The Reynolds number based on the cylinder's diameter was kept constant at 8,700, while the separation between the upstream cylinder and the wall was varied. The results show that this separation distance known as the gap ratio has a significant effect on the dynamic behaviour of the upstream and downstream cylinders. Accordingly, the interaction of shear layers between the upstream cylinder and the rigid wall has a strong influence on the vortex dynamics of both cylinders, in particular when the upstream cylinder was mounted close to the wall. In this arrangement, a jet flow produced in the wake of the upstream cylinder significantly affects the vortex shedding frequency, and the lift and drag coefficients of both cylinders. This can alter the dynamic response of the downstream cylinder and theoretical efficiency of the VIV power.

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“…In these situations, turbulence through artificial forcing can be used [22]. In our study the unsteadiness, which is created in the SEN bottom well is sufficient to disturb the flow and no artificial forcing is needed.…”

Section: Numerical Modelmentioning

confidence: 99%

CFD of the MHD Mold Flow by Means of Hybrid LES/RANS Turbulence Modeling

Kratzsch

Asad

Schwarze

2015

Journal for Manufacturing Science and Production

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In the last decades, electromagnetic braking (EMBr) systems become a powerful tool to dampen possible jet oscillations in the continuous casting mold. Further studies showed that if a EMBr is not positioned correctly, it can induce flow oscillations. Hence, the design of these braking systems can be promoted by adequate CFD simulations. In most cases, unsteady RANS simulations (URANS) are sufficient to resolve lowfrequency, large-scale oscillations of these MHD flows. Alternatively, Large Eddy Simulations (LES) may also resolve important details of the turbulence. However, since they require much finer computational grids, the computational costs are much higher. A bridge between both approaches are hybrid methods like the Scale Adaptive Simulation (SAS). In this study, we compare the performance of SAS with URANS and LES. Results are validated in detail by comparison with data from a Ruler-EMBr model experiment.

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Scale-Adaptive Simulation with Artificial Forcing

Cited by 33 publications

References 12 publications

The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Part 1: Theory and Model Description

The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Part 1: Theory and Model Description

Effect of a rigid wall on the vortex induced vibration of two staggered circular cylinders

CFD of the MHD Mold Flow by Means of Hybrid LES/RANS Turbulence Modeling

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