Proceedings ArticleDOI
A one-equation turbulence model for aerodynamic flows
Philippe R. Spalart,S. Allmaras +1 more
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The article was published on 1992-01-06. It has received 8784 citations till now. The article focuses on the topics: K-epsilon turbulence model & K-omega turbulence model.read more
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Large‐eddy simulation of oscillating boundary layers: Model comparison and validation
TL;DR: In this article, a large-eddy simulation of oscillating boundary layers over smooth and rough walls in the fully turbulent regime has been carried out, and the use of advanced SGS models coupled with approximate boundary conditions can predict the flow successfully.
Journal ArticleDOI
Data-Driven Aerospace Engineering: Reframing the Industry with Machine Learning
Steven L. Brunton,J. Nathan Kutz,Krithika Manohar,Aleksandr Y. Aravkin,Kristi A. Morgansen,Jennifer Klemisch,Nicholas Goebel,James Buttrick,Jeffrey Poskin,Adriana W. Blom-Schieber,Thomas A. Hogan,Darren McDonald +11 more
TL;DR: This review will explore the opportunities and challenges of integrating data-driven science and engineering into the aerospace industry, and focus on the critical need for interpretable, generalizeable, explainable, and certifiable machine learning techniques for safety-critical applications.
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Rotor Interaction Noise in Counter-Rotating Propfan Propulsion Systems
TL;DR: In this paper, an integrated noise and performance assessment methodology for advanced propfan powered aircraft configurations is presented. The approach is based on first principles and combines a coupled aircraft and propulsion system mission and performance analysis tool with 3-D unsteady, full wheel CRP CFD computations and aero-acoustic simulations.
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Status of turbulence modeling for hypersonic propulsion flowpaths
TL;DR: In this paper, the authors provide an assessment of current turbulent flow calculation methods for hypersonic propulsion flowpaths, particularly the scramjet engine, and the results from calculations of a direct connect supersonic combustion experiment are also used to address the effects of turbulence model selection and in particular settings for the turbulent Prandtl and Schmidt numbers.
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Detached-Eddy Simulation of Rotating Stall Inception for a Full-Annulus Transonic Rotor
TL;DR: In this article, a full-annulus detached-eddy simulation (DES) is conducted to investigate stall inception for the axial transonic rotor, NASA rotor 67, which is observed that the rotating stall is initiated by the local spike flow disturbance, which quickly induces the rotor to stall roughly over two rotor revolutions.
References
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Journal ArticleDOI
Reassessment of the scale-determining equation for advanced turbulence models
TL;DR: In this paper, a two-equation turbulence model is proposed that is shown to be quite accurate for attached boundary layers in adverse pressure gradient, compressible boundary layers, and free shear flows.
Journal ArticleDOI
Direct simulation of a turbulent boundary layer up to R sub theta = 1410
TL;DR: In this paper, the turbulent boundary layer on a flat plate, with zero pressure gradient, is simulated numerically at four stations between R sub theta = 225 and R sub tta = 1410.
Journal ArticleDOI
A mathematically simple turbulence closure model for attached and separated turbulent boundary layers
D. A. Johnson,L. S. King +1 more
TL;DR: In this article, a new turbulence closure model was proposed to treat two-dimensional, turbulent boundary layers with strong adverse pressure gradients and attendant separation by using an ordinary differential equation derived from the turbulent kinetic energy equation to describe the stream wise development of the maximum Reynolds shear stress in conjunction with an assumed eddy viscosity distribution.
Proceedings ArticleDOI
Validation of a multigrid method for the Reynolds averaged equations
Luigi Martinelli,Antony Jameson +1 more
Proceedings ArticleDOI
Artificial dissipation and central difference schemes for the Euler and Navier-Stokes equations
R. C. Swanson,Eli Turkel +1 more
TL;DR: In this paper, an artificial dissipation model, including boundary treatment, that is employed in many central difference schemes for solving the Euler and Navier-Stokes equations is discussed.