Download or read book Large Eddy Simulation of a Near Sonic Turbulent Jet and Its Radiated Noise written by G. S. Constantinescu and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Large Eddy Simulation of Sound Radiation from a Subsonic Turbulent Jet written by W. Zhao and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct and Large Eddy Simulation V written by Rainer Friedrich and published by Springer Science & Business Media. This book was released on 2004-04-30 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fifth ERCOFfAC workshop 'Direct and Large-Eddy Simulation-5' (DLES-5) was held at the Munich University of Technology, August 27-29, 2003. It is part of a series of workshops that originated at the University of Surrey in 1994 with the intention to provide a forum for presentation and dis cussion of recent developments in the field of direct and large-eddy simula tion. Over the years the DLES-series has grown into a major international venue focussed on all aspects of DNS and LES, but also on hybrid methods like RANSILES coupling and detached-eddy simulation designed to provide reliable answers to technical flow problems at reasonable computational cost. DLES-5 was attended by 111 delegates from 15 countries. Its three-day pro gramme covered ten invited lectures and 63 original contributions partially pre sented in parallel sessions. The workshop was financially supported by the fol lowing companies, institutions and organizations: ANSYS Germany GmbH, AUDI AG, BMW Group, ERCOFfAC, FORTVER (Bavarian Research Asso ciation on Combustion), JM BURGERS CENTRE for Fluid Dynamics. Their help is gratefully acknowledged. The present Proceedings contain the written versions of nine invited lectures and fifty-nine selected and reviewed contributions which are organized in four parts: 1 Issues in LES modelling and numerics 2 Laminar-turbulent transition 3 Turbulent flows involving complex physical phenomena 4 Turbulent flows in complex geometries and in technical applications.
Download or read book A Study of Subsonic Turbulent Jets and Their Radiated Sound Using Large eddy Simulation written by Niklas Andersson and published by . This book was released on 2005 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Turbulence Modelling and Experiments 5 written by W. Rodi and published by Elsevier. This book was released on 2002-08-21 with total page 1029 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence is one of the key issues in tackling engineering flow problems. As powerful computers and accurate numerical methods are now available for solving the flow equations, and since engineering applications nearly always involve turbulence effects, the reliability of CFD analysis depends increasingly on the performance of the turbulence models. This series of symposia provides a forum for presenting and discussing new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. The papers in this set of proceedings were presented at the 5th International Symposium on Engineering Turbulence Modelling and Measurements in September 2002. They look at a variety of areas, including: Turbulence modelling; Direct and large-eddy simulations; Applications of turbulence models; Experimental studies; Transition; Turbulence control; Aerodynamic flow; Aero-acoustics; Turbomachinery flows; Heat transfer; Combustion systems; Two-phase flows. These papers are preceded by a section containing 6 invited papers covering various aspects of turbulence modelling and simulation as well as their practical application, combustion modelling and particle-image velocimetry.
Download or read book Large Eddy Simulations for Compressible Turbulent Jet Flows written by Nima Tajallipour and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Large eddy Simulation of a Turbulent Jet written by Mathieu Jean Baptiste Marie Pourquié and published by . This book was released on 1994 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Large Eddy Simulation of Turbulent Jets written by Magnus Olsson and published by . This book was released on 1997 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic Inlet Conditions for Large Eddy Simulation of a Fully turbulent Jet written by David J. Glaze and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct and Large Eddy Simulation VI written by E. Lamballais and published by Springer Science & Business Media. This book was released on 2006-10-19 with total page 783 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sixth ERCOFTAC Workshop on ‘Direct and Large-Eddy Simulation’ (DLES-6) was held at the University of Poitiers from September 12-14, 2005. Following the tradition of previous workshops in the DLES-series, this edition has reflected the state-of-the-art of numerical simulation of transitional and turbulent flows and provided an active forum for discussion of recent developments in simulation techniques and understanding of flow physics.
Download or read book Jet Aeroacoustics written by Ganesh Raman and published by Multi-Science Publishing Company. This book was released on 2008 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date survey of airplane noise, this single-volume reference thoroughly addresses the key problems facing aeronautical engineers. By tackling the most important aspects of jet aeroacoustics, including theories of jet noise, the design of jet noise facilities, and how jet noise is measured, this thoroughly researched analysis outlines a plan for first limiting the current distress being vocalized in issues of passenger cabin comfort and protests by those living near airports and later for finding an overall solution to jet noise.
Download or read book Numerical Simulation of Turbulent Flows and Noise Generation written by Christophe Brun and published by Springer Science & Business Media. This book was released on 2009-03-07 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large Eddy Simulation (LES) is a high-fidelity approach to the numerical simulation of turbulent flows. Recent developments have shown LES to be able to predict aerodynamic noise generation and propagation as well as the turbulent flow, by means of either a hybrid or a direct approach. This book is based on the results of two French/German research groups working on LES simulations in complex geometries and noise generation in turbulent flows. The results provide insights into modern prediction approaches for turbulent flows and noise generation mechanisms as well as their use for novel noise reduction concepts.
Download or read book Direct and Large Eddy Simulations of Three Dimensional Round Turbulent Jets written by Jeffrey Jay Lienau and published by . This book was released on 1994 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Large Eddy Simulation for Acoustics written by Claus Wagner and published by Cambridge University Press. This book was released on 2007-01-15 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noise around airports, trains, and industries attracts environmental concern and regulation. Large-eddy simulation (LES) is used for noise-reduced design and acoustical research. This 2007 book, by 30 experts, presents the theoretical background of acoustics and LES, and details about numerical methods, e.g. discretization schemes, boundary conditions, and coupling aspects.
Download or read book Large Eddy Simulation of Turbulent Channel and Jet Flows Using the Approximate Deconvolution Model written by Marco Küng and published by . This book was released on 2007 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of High speed Turbulent Jet Noise Using Decomposition Methods written by Jaiyoung Ryu and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulent jet mixing noise is an important component of the overall noise generated by modern aircraft. The mixing noise is dominated by the noise from large scale coherent structures and is observed at shallow exit angles (30[tilde]50deg from axis) with narrow banded spectrum which peaks at St [identical to] fD/U = 0.2 [tilde] 0.3. In this work, we apply a range of theoretical methods to investigate the low frequency noise generation using jet flow data acquired from Large Eddy Simulation database (Bodony & Lele (2005)). Bi-orthogonal relations between regular and adjoint linear stability waves are formulated and applied to detect the amplitude coefficients of instability waves in nonlinear flows. We also apply solutions from Parabolized Stability Equations to the beamforming technique to determine the amplitude coefficients. To separate supersonic and subsonic components of flow variables from LES, we use wavenumber- frequency domain filter then we apply Proper Orthogonal Decomposition method to examine the overall pattern of filtered field. Four jet operating conditions are considered, cold Mj=0.5, 0.9, and 1.95 jets, and a heated Mj =0.97 jet at three frequencies St = 0.1, 0.3 and 0.5 and azimuthal mode numbers n = 0, 1 and 2. Adjoint based amplitude coefficient shows quite promising results for unsteady laminar flow computed using Direct Numerical Simulation. For turbulent flow, this method has limited success, whereas PSE with beamforming technique shows a close resemblance to the turbulent flow data from LES. The near-field norms of the supersonic component of pressure for different jets show a close correlation with the far-field noise intensity and are found to scale well with Lighthill's power law. For heated transonic and cold supersonic jets, the POD projection of the supersonic component resembles the projection of full flow field. However, for subsonic jets, POD projection of supersonic component is drastically different from the POD modes of the full flow field.
Download or read book Jet Noise Physics and Modeling Using First Principles Simulations written by and published by . This book was released on 2003 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
