Author: Khaled S. Abdol-HamidPublisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
Multiscale Turbulence Effects in Underexpanded Supersonic Jets
Author: Khaled S. Abdol-HamidPublisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
Multiscale Turbulence Effects in Supersonic Jets Exhausting Into Still Air
Author: Khaled Sayed Abdol-HamidPublisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 44
Book Description
Multiscale Turbulence Effects in Supersonic Jets Exhausting Into Still Air
Author: Khaled S. Abdol-HamidPublisher:
ISBN:
Category :
Languages : en
Pages : 44
Book Description
NASA Technical Paper
Author: Fundamentals Of Turbulence Modelling
Author: Ching Jen ChenPublisher: CRC Press
ISBN: 9781560324058
Category : Technology & Engineering
Languages : en
Pages : 312
Book Description
Focuses on the second-order turbulence-closure model and its applications to engineering problems. Topics include turbulent motion and the averaging process, near-wall turbulence, applications of turbulence models, and turbulent buoyant flows.
Turbulent Shear Layers in Supersonic Flow
Author: Alexander J. SmitsPublisher: Springer Science & Business Media
ISBN: 0387263055
Category : Science
Languages : en
Pages : 418
Book Description
A good understanding of turbulent compressible flows is essential to the design and operation of high-speed vehicles. Such flows occur, for example, in the external flow over the surfaces of supersonic aircraft, and in the internal flow through the engines. Our ability to predict the aerodynamic lift, drag, propulsion and maneuverability of high-speed vehicles is crucially dependent on our knowledge of turbulent shear layers, and our understanding of their behavior in the presence of shock waves and regions of changing pressure. Turbulent Shear Layers in Supersonic Flow provides a comprehensive introduction to the field, and helps provide a basis for future work in this area. Wherever possible we use the available experimental work, and the results from numerical simulations to illustrate and develop a physical understanding of turbulent compressible flows.
Proceedings of the International Conference on Modern Research in Aerospace Engineering
Author: Sanjay SinghPublisher: Springer
ISBN: 9811058490
Category : Technology & Engineering
Languages : en
Pages : 369
Book Description
This book includes high-quality research papers presenting the latest advances in aerospace and related engineering fields. The papers are organized according to six broad areas (i) Aerospace Propulsion, (ii) Space Research, Avionics and Instrumentation, (iii) Aerodynamics Wind Tunnel and Computational fluid dynamics (CFD), (iv) Structural Analysis and Finite Element Method (FEM), (v) Materials, Manufacturing and Air Safety and (vi) Aircraft Environmental and Control System and Stability, making it easy for readers to find the information they require. Offering insights into the state of the art in aerospace engineering, the original research presented is valuable to academics, researchers, undergraduate and postgraduate students as well as professionals in industry and R&D. The clearly written book can be used for the validation of data, and the development of experimental and simulation techniques as well as other mathematical approaches.
Effect of Swirl on Turbulent Structures in Supersonic Jets
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722192457
Category :
Languages : en
Pages : 36
Book Description
Direct Numerical Simulation (DNS) is used to study the mechanism of generation and evolution of turbulence structures in a temporally evolving supersonic swirling round jet and also to examine the resulting acoustic radiations. Fourier spectral expansions are used in the streamwise and azimuthal directions and a 1-D b-spline Galerkin representation is used in the radial direction. Spectral-like accuracy is achieved using this numerical scheme. Direct numerical simulations, using the b-spline spectral method, are carried out starting from mean flow initial conditions which are perturbed by the most unstable linear stability eigenfunctions. It is observed that the initial helical instability waves evolve into helical vortices which eventually breakdown into smaller scales of turbulence. 'Rib' structures similar to those seen in incompressible mixing layer flow of Rogers and Moserl are observed. The jet core breakdown stage exhibits increased acoustic radiations. Rao, Ram Mohan and Lundgren, Thomas S. Ames Research Center NCC2-5221...
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