Numerical Computations of Turbulence Amplification in Shock Wave Interactions

Numerical Computations of Turbulence Amplification in Shock Wave Interactions PDF Author: Thomas A. Zang
Publisher:
ISBN:
Category : Shock waves
Languages : en
Pages : 40

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Numerical Computations of Turbulence Amplification in Shock Wave Interactions

Numerical Computations of Turbulence Amplification in Shock Wave Interactions PDF Author: Thomas A. Zang
Publisher:
ISBN:
Category : Shock waves
Languages : en
Pages : 40

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Studies of Shock Wave Interactions with Homogeneous and Isotropic Turbulence

Studies of Shock Wave Interactions with Homogeneous and Isotropic Turbulence PDF Author: G. Briassulis
Publisher:
ISBN:
Category : Shock waves
Languages : en
Pages : 60

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Numerical Computation of Shock Wave

Numerical Computation of Shock Wave PDF Author: S.-W. Kim
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 34

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Interaction of Turbulence with Complex Shock Waves

Interaction of Turbulence with Complex Shock Waves PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 133

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Book Description
Linear analysis and direct numerical simulation (DNS) are used to study the interaction of a shock wave with a turbulent flow. Effects central to shock wave/boundary layer interaction are identified and explained. The quantitative importance of the turbulence anisotropy and the shock oblique angle is demonstrated. Drop in Reynolds shear stress across a normal shock is shown. The implication for Reynolds stress models is discussed. The role of dilatational turbulent fluctuations on turbulence amplification is studied in detail. An explanation is suggested for lower amplification reported in wind-tunnel studies. Linear analysis & DNS are used to demonstrate the considerable influence of entropic fluctuations on turbulence evolution across a shock. Positive correlation between u' and T ' suppress amplification while negative correlation enhances it. Invalidity of Morkovin's hypothesis is demonstrated. A high order scheme is developed to allow strong shock/turbulence interaction. Results are presented for isotropic turbulence/normal shock interaction. (AN).

Shock Wave-Boundary-Layer Interactions

Shock Wave-Boundary-Layer Interactions PDF Author: Holger Babinsky
Publisher: Cambridge University Press
ISBN: 1139498649
Category : Technology & Engineering
Languages : en
Pages : 481

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Book Description
Shock wave-boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft wings to hypersonic vehicles and engines. SBLIs have the potential to pose serious problems in a flowfield; hence they often prove to be a critical - or even design limiting - issue for many aerospace applications. This is the first book devoted solely to a comprehensive, state-of-the-art explanation of this phenomenon. It includes a description of the basic fluid mechanics of SBLIs plus contributions from leading international experts who share their insight into their physics and the impact they have in practical flow situations. This book is for practitioners and graduate students in aerodynamics who wish to familiarize themselves with all aspects of SBLI flows. It is a valuable resource for specialists because it compiles experimental, computational and theoretical knowledge in one place.

Transition Location Effect on Shock Wave Boundary Layer Interaction

Transition Location Effect on Shock Wave Boundary Layer Interaction PDF Author: Piotr Doerffer
Publisher: Springer Nature
ISBN: 3030474615
Category : Technology & Engineering
Languages : en
Pages : 540

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Book Description
This book presents experimental and numerical findings on reducing shock-induced separation by applying transition upstream the shock wave. The purpose is to find out how close to the shock wave the transition should be located in order to obtain favorable turbulent boundary layer interaction. The book shares findings obtained using advanced flow measurement methods and concerning e.g. the transition location, boundary layer characteristics, and the detection of shock wave configurations. It includes a number of experimental case studies and CFD simulations that offer valuable insights into the flow structure. It covers RANS/URANS methods for the experimental test section design, as well as more advanced techniques, such as LES, hybrid methods and DNS for studying the transition and shock wave interaction in detail. The experimental and numerical investigations presented here were conducted by sixteen different partners in the context of the TFAST Project. The general focus is on determining if and how it is possible to improve flow performance in comparison to laminar interaction. The book mainly addresses academics and professionals whose work involves the aerodynamics of internal and external flows, as well as experimentalists working with compressible flows. It will also be of benefit for CFD developers and users, and for students of aviation and propulsion systems alike.

A Numerical Solution for the Interaction of a Moving Shock Wave with a Turbulent Mixing Region

A Numerical Solution for the Interaction of a Moving Shock Wave with a Turbulent Mixing Region PDF Author: William Fred Walker
Publisher:
ISBN:
Category : Shock waves
Languages : en
Pages : 230

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Numerical Simulation of 3-D Shock Wave Turbulent Boundary Layer Interaction Using a Two Equation Model of Turbulence

Numerical Simulation of 3-D Shock Wave Turbulent Boundary Layer Interaction Using a Two Equation Model of Turbulence PDF Author: Marianna Gnedin
Publisher:
ISBN:
Category :
Languages : en
Pages : 130

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Understanding and Predicting Shockwave and Turbulent Boundary Layer Interactions

Understanding and Predicting Shockwave and Turbulent Boundary Layer Interactions PDF Author: M. Pino Martin
Publisher:
ISBN:
Category : Laminar boundary layer
Languages : en
Pages : 34

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Book Description
Shockwave and turbulent boundary layer interactions produce intense localized pressure loads and heating rates that can have a dramatic influence on the drag and heating experienced by a high-speed vehicle, and can significantly impact fuel mixing and combustion in propulsion systems. The lack of standardized and traceable databases prevents the calibration of computational fluid dynamic models to accurately represent these critical flow phenomena. In this work we accomplished the development and validation against experiments at the same flow and boundary conditions of direct numerical simulations of shock and turbulent boundary layer interactions. We pioneered the development of a unique numerical capability that allows the accurate and detailed three-dimensional turbulence data at a reasonable turn-around time. In turn, parametric studies of fundamental flow physics are feasible, for the first time. By accurate, it is meant that the numerical uncertainty is within the experimental error.

Physics and Numerical Simulation of Shock Wave/turbulent Boundary-layer Interactions

Physics and Numerical Simulation of Shock Wave/turbulent Boundary-layer Interactions PDF Author: G. W. Heard
Publisher:
ISBN:
Category :
Languages : en
Pages :

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