Stability And Suppression Of Turbulence In Relaxing Molecular Gas Flows

Author : Yurii N. Grigoryev,Igor V. Ershov
Publisher : Springer
Page : 201 pages
File Size : 44,9 Mb
Release : 2017-04-08
Category : Science
ISBN : 9783319553603

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Stability and Suppression of Turbulence in Relaxing Molecular Gas Flows by Yurii N. Grigoryev,Igor V. Ershov Pdf

This book presents an in-depth systematic investigation of a dissipative effect which manifests itself as the growth of hydrodynamic stability and suppression of turbulence in relaxing molecular gas flows. The work describes the theoretical foundations of a new way to control stability and laminar turbulent transitions in aerodynamic flows. It develops hydrodynamic models for describing thermal nonequilibrium gas flows which allow the consideration of suppression of inviscid acoustic waves in 2D shear flows. Then, nonlinear evolution of large-scale vortices and Kelvin-Helmholtz waves in relaxing shear flows are studied. Critical Reynolds numbers in supersonic Couette flows are calculated analytically and numerically within the framework of both linear and nonlinear classical energy hydrodynamic stability theories. The calculations clearly show that the relaxation process can appreciably delay the laminar-turbulent transition. The aim of the book is to show the new dissipative effect, which can be used for flow control and laminarization. This volume will be of interest and useful to mechanical engineers, physicists, and mathematicians who specialize in hydrodynamic stability theory, turbulence, and laminarization of flows.

Author : Bhimsen K. Shivamoggi
Publisher : Unknown
Page : 169 pages
File Size : 45,5 Mb
Release : 1986
Category : Gas dynamics
ISBN : 0745800017

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Stability of Parallel Gas Flows by Bhimsen K. Shivamoggi Pdf

Author : R. Borghi,S.N.B. Murthy
Publisher : Springer
Page : 950 pages
File Size : 40,8 Mb
Release : 1989-02-28
Category : Science
ISBN : 0387968873

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Turbulent Reactive Flows by R. Borghi,S.N.B. Murthy Pdf

Turbulent reactive flows are of common occurrance in combustion engineering, chemical reactor technology and various types of engines producing power and thrust utilizing chemical and nuclear fuels. Pollutant formation and dispersion in the atmospheric environment and in rivers, lakes and ocean also involve interactions between turbulence, chemical reactivity and heat and mass transfer processes. Considerable advances have occurred over the past twenty years in the understanding, analysis, measurement, prediction and control of turbulent reactive flows. Two main contributors to such advances are improvements in instrumentation and spectacular growth in computation: hardware, sciences and skills and data processing software, each leading to developments in others. Turbulence presents several features that are situation-specific. Both for that reason and a number of others, it is yet difficult to visualize a so-called solution of the turbulence problem or even a generalized approach to the problem. It appears that recognition of patterns and structures in turbulent flow and their study based on considerations of stability, interactions, chaos and fractal character may be opening up an avenue of research that may be leading to a generalized approach to classification and analysis and, possibly, prediction of specific processes in the flowfield. Predictions for engineering use, on the other hand, can be foreseen for sometime to come to depend upon modeling of selected features of turbulence at various levels of sophistication dictated by perceived need and available capability.

Author : Aleksei Y. Varaksin
Publisher : Springer
Page : 194 pages
File Size : 49,8 Mb
Release : 2007-07-20
Category : Science
ISBN : 3540680535

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Turbulent Particle-Laden Gas Flows by Aleksei Y. Varaksin Pdf

This book presents results of experimental and theoretical studies of "gas-solid particles" turbulent two-phase flows. It analyzes the characteristics of heterogeneous flows in channels (pipes), as well as those in the vicinity of the critical points of bodies subjected to flow and in the boundary layer developing on their surface. Coverage also treats in detail problems of physical simulation of turbulent gas flows which carry solid particles.

Author : Anonim
Publisher : Unknown
Page : 536 pages
File Size : 48,9 Mb
Release : 1999
Category : Physics
ISBN : CHI:54432552

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Bulletin of the Russian Academy of Sciences by Anonim Pdf

Author : R. Borghi,S.N.B. Murthy
Publisher : Springer
Page : 950 pages
File Size : 48,8 Mb
Release : 2012-10-20
Category : Science
ISBN : 1461396328

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Turbulent Reactive Flows by R. Borghi,S.N.B. Murthy Pdf

Turbulent reactive flows are of common occurrance in combustion engineering, chemical reactor technology and various types of engines producing power and thrust utilizing chemical and nuclear fuels. Pollutant formation and dispersion in the atmospheric environment and in rivers, lakes and ocean also involve interactions between turbulence, chemical reactivity and heat and mass transfer processes. Considerable advances have occurred over the past twenty years in the understanding, analysis, measurement, prediction and control of turbulent reactive flows. Two main contributors to such advances are improvements in instrumentation and spectacular growth in computation: hardware, sciences and skills and data processing software, each leading to developments in others. Turbulence presents several features that are situation-specific. Both for that reason and a number of others, it is yet difficult to visualize a so-called solution of the turbulence problem or even a generalized approach to the problem. It appears that recognition of patterns and structures in turbulent flow and their study based on considerations of stability, interactions, chaos and fractal character may be opening up an avenue of research that may be leading to a generalized approach to classification and analysis and, possibly, prediction of specific processes in the flowfield. Predictions for engineering use, on the other hand, can be foreseen for sometime to come to depend upon modeling of selected features of turbulence at various levels of sophistication dictated by perceived need and available capability.

Author : Anonim
Publisher : Unknown
Page : 584 pages
File Size : 52,6 Mb
Release : 1994
Category : Aeronautics
ISBN : MINN:30000005901297

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 698 pages
File Size : 52,7 Mb
Release : 1991
Category : Physics
ISBN : UOM:39015027732067

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Physics Briefs by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 1218 pages
File Size : 47,7 Mb
Release : 1992
Category : Aeronautics
ISBN : STANFORD:36105000473681

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International Aerospace Abstracts by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 1032 pages
File Size : 53,5 Mb
Release : 1965
Category : Aeronautics
ISBN : UCSD:31822015402613

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Journal of the Royal Aeronautical Society by Anonim Pdf

Author : Roger Prud'homme
Publisher : John Wiley & Sons
Page : 200 pages
File Size : 41,5 Mb
Release : 2013-10-08
Category : Science
ISBN : 9781118832660

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Flows and Chemical Reactions in Homogeneous Mixtures by Roger Prud'homme Pdf

Flows with chemical reactions can occur in various fields such as combustion, process engineering, aeronautics, the atmospheric environment and aquatics. The examples of application chosen in this book mainly concern homogeneous reactive mixtures that can occur in propellers within the fields of process engineering and combustion: – propagation of sound and monodimensional flows in nozzles, which may include disequilibria of the internal modes of the energy of molecules; – ideal chemical reactors, stabilization of their steady operation points in the homogeneous case of a perfect mixture and classical instruments of experimental and theoretical analysis such as population balances, and the distribution of residence and passage times; – laminar and turbulent flames, separating those which are premixed from those which are not and which do not exhibit the same mechanisms, but which also occur in the case of triple flames. Flows and Chemical Reactions in Homogeneous Mixtures provides information on dimensional analysis, statistical thermodynamics with coupling between internal modes and chemical reactions, the apparition and damping of fluid turbulence as well as its statistical processing, bifurcations, flames in a confined medium and diffusion. Contents 1. Flows in Nozzles. 2. Chemical Reactors. 3. Laminar and Turbulent Flames. Appendix 1. Dimensionless Numbers, Similarity. Appendix 2. Thermodynamic Functions. Appendix 3. Concepts of Turbulence. Appendix 4. Thermodynamic functions for a mixture in disequilibrium. Appendix 5. Notion of bifurcation. Appendix 6. Confined flame. Appendix 7. Limits of Validity of the First-order Expansions for Diffusion Flames.

Author : Anonim
Publisher : Unknown
Page : 720 pages
File Size : 44,9 Mb
Release : 1997
Category : Physics
ISBN : UCSD:31822020218376

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Physics, Uspekhi by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 936 pages
File Size : 52,7 Mb
Release : 1982
Category : Plasma (Ionized gases)
ISBN : STANFORD:36105126721211

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Plasma Physics Index by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 558 pages
File Size : 49,9 Mb
Release : 1981
Category : Plasma (Ionized gases)
ISBN : STANFORD:36105126721195

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Documentation of Plasma Physics. Pt. 1, Experimental Plasma Physics [and] Theoretical Plasma Physics by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 384 pages
File Size : 48,9 Mb
Release : 1988
Category : Mechanics, Applied
ISBN : OSU:32435026160754

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Applied Mechanics Reviews by Anonim Pdf