Monotone Integrated Large Eddy Simulation of Supersonic Boundary Layer Flows PDF Download
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Author: Y. H. Chong
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Y. H. Chong
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Y.H Chong
Publisher:
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Category :
Languages : en
Pages :
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Author: Y. H. Chong
Publisher:
ISBN:
Category :
Languages : en
Pages : 170
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Author: H. Shan
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Category :
Languages : en
Pages :
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Author: H. Yan
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Category :
Languages : en
Pages :
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Author:
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Category :
Languages : en
Pages : 0
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The interaction of a shock wave with a turbulent boundary layer is a central problem in supersonic inlet flows. This work uses numerical and analytical techniques to study shock/turbulence interaction in order to identify and explain factors important in shock/boundary layer interaction. Direct numerical simulation of a normal shock wave with an isotropic turbulent field of vorticity and entropy fluctuations showed that negative upstream correlation between the vorticity and entropy fluctuations enhances the turbulence across the shock. Positive upstream correlation has a suppressing effect. A new numerical method providing excellent high wavenumber resolution while reducing the computational cost was developed. A model with no adjustable constants was developed to study the vortex breakdown resulting from the interaction of canard or forbody vortices with the shock waves in a supersonic inlet flow. Very good agreement with both experiment and computation was obtained. A numerical method to compute shock/turbulence interaction using a conservative form of the Large Eddy Simulation (LES) equations has been developed and validated. LES of the interaction of isotropic turbulence with a normal shock was performed and comparisons with direct numerical simulation (DNS) results were favorable. A new Fortran 90 code has been developed for the computation of shock/turbulence interaction. The code is an improved version of codes used previously in shock/turbulence interaction simulations.
Author: KNIGHT
Publisher: IOP ebooks
ISBN: 9780750350006
Category :
Languages : en
Pages : 0
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This book provides a comprehensive exposition of hypersonic turbulent boundary layers including the fundamental mathematical theory, structure of equilibrium boundary layers, and extensive surveys of Direct Numerical Simulation (DNS), Large Eddy Simulation (LES) and experiments.
Author: Doyle Knight
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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A Large Eddy Simulation (LES) methodology has been developed for supersonic turbulent flows with strong shock boundary layer interaction. Results are presented for an expansion-compression corner at Mach 3 and compared with experimental data.
Author: Hong Yan
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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A Large Eddy Simulation of a 25 deg compression corner at M = 2.88 and Re(delta) - 2 x 10(exp 4) is performed using an Essentially Non Oscillatory (ENO) scheme. The Favre filtered compressible Navier-Stokes equations are solved using a Monotone Integrated Large Eddy Simulation (MILES) technique on an unstructured grid of tetrahedral cells. The mean flow variables and turbulent shear stress at the incoming flow are in good agreement with experiment and DNS. The separation length scaled by the characteristic scale shows agreement with the experiment. No pronounced pressure plateau is observed compared with experiment at higher Reynolds number.
Author: C. Fureby
Publisher:
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Category :
Languages : en
Pages :
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