Review and assessment of turbulence models for hypersonic flows

Roy, Christopher J.; Blottner, F. G.

doi:10.1016/j.paerosci.2006.12.002

Cited by 233 publications

(109 citation statements)

References 125 publications

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“…Reynolds-averaged Navier-Stokes (RANS) simulations, on the other hand, are used as an engineering alternative to obtain a reasonably accurate solution to a complex shock/boundarylayer interaction problem within acceptable computational times (Gaitonde, 2015;Knight & Degrez, 1998;Panaras, 2015;Roy & Blottner, 2006;Zhang, Gao, Jiang, & Lee, 2017). The one-equation Spalart-Allmaras (SA) turbulence model (Spalart & Allmaras, 1992) solves a modeled transport equation for the kinematic eddy viscosity and has been shown to give good results for boundary layers subjected to adverse pressure gradients in aerospace applications involving wall-bounded flows (DeBonis et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Numerical prediction of shock/boundary-layer interactions at high Mach numbers using a modified Spalart–Allmaras model

Pasha

Juhany

Khalid

2018

Engineering Applications of Computational Fluid Mechanics

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The Reynolds-averaged Navier-Stokes equations with one-equation turbulence models are used to simulate the flow field past a cone-flare geometry in the Mach number range from 5 to 8 with emphasis on the interaction region of the flare shock with the upstream boundary layer. A model based on the physics of shock unsteadiness is used to correct the standard Spalart-Allmaras turbulence model to improve the prediction of the extent of the separation bubble arising from the shock/turbulent boundary-layer interaction and its accompanying peak pressure and aerothermal loads on the surface. The computed results are validated against the experimental data. The limitations of the shock-unsteadiness model and the extent of the improvement in predicting the heat flux are discussed. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Numerical prediction of shock/boundary-layer interactions at high Mach numbers using a modified Spalart–Allmaras model

Pasha

Juhany

Khalid

2018

Engineering Applications of Computational Fluid Mechanics

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“…A detailed list of several RANS turbulence models that have been used in hypersonic simulations is presented in Ref. 15. It should be noted that the vast majority of the literature concerning validation and comparison of RANS turbulence models has not been in the hypersonic regime, but at much slower speeds, particularly subsonic and transonic.…”

Section: Rans Turbulence Modelingmentioning

confidence: 99%

Status of Turbulence Modeling for Hypersonic Propulsion Flowpaths

Georgiadis

Yoder²,

Vyas³

et al. 2011

47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference &Amp;amp; Exhibit

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“…Understanding, designing and optimizing flows is crucial, e.g., for improving fuel injections [1], combustions [2,3], fuel cells [4], wind turbines [5], turbomachines [6], human air and blood flows in medicine [7,8], as well as for the fundamental task of modeling flow turbulence [9]. For this purpose, optical measurement methods are essential tools that promise fast and precise field measurements of complex flows.…”

Section: Introductionmentioning

confidence: 99%

Imaging Flow Velocimetry with Laser Mie Scattering

Fischer

2017

Applied Sciences

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Abstract:Imaging flow velocity measurements are essential for the investigation of unsteady complex flow phenomena, e.g., in turbomachines, injectors and combustors. The direct optical measurement on fluid molecules is possible with laser Rayleigh scattering and the Doppler effect. However, the small scattering cross-section results in a low signal to noise ratio, which hinders time-resolved measurements of the flow field. For this reason, the signal to noise ratio is increased by using laser Mie scattering on micrometer-sized particles that follow the flow with negligible slip. Finally, the ongoing development of powerful lasers and fast, sensitive cameras has boosted the performance of several imaging methods for flow velocimetry. The article describes the different flow measurement principles, as well as the fundamental physical measurement limits. Furthermore, the evolution to an imaging technique is outlined for each measurement principle by reviewing recent advances and applications. As a result, the progress, the challenges and the perspectives for high-speed imaging flow velocimetry are considered.

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Review and assessment of turbulence models for hypersonic flows

Cited by 233 publications

References 125 publications

Numerical prediction of shock/boundary-layer interactions at high Mach numbers using a modified Spalart–Allmaras model

Numerical prediction of shock/boundary-layer interactions at high Mach numbers using a modified Spalart–Allmaras model

Status of Turbulence Modeling for Hypersonic Propulsion Flowpaths

Imaging Flow Velocimetry with Laser Mie Scattering

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