On Convective and Absolute Instability
Author : Kristian Barstad Dysthe
Publisher :
Page : 50 pages
File Size : 33,35 MB
Release : 1965
Category : Differential equations, Partial
ISBN :
Author : Kristian Barstad Dysthe
Publisher :
Page : 50 pages
File Size : 33,35 MB
Release : 1965
Category : Differential equations, Partial
ISBN :
Author : Antonio Barletta
Publisher : Springer
Page : 283 pages
File Size : 27,83 MB
Release : 2019-01-02
Category : Technology & Engineering
ISBN : 3030061949
This book addresses the concepts of unstable flow solutions, convective instability and absolute instability, with reference to simple (or toy) mathematical models, which are mathematically simple despite their purely abstract character. Within this paradigm, the book introduces the basic mathematical tools, Fourier transform, normal modes, wavepackets and their dynamics, before reviewing the fundamental ideas behind the mathematical modelling of fluid flow and heat transfer in porous media. The author goes on to discuss the fundamentals of the Rayleigh-Bénard instability and other thermal instabilities of convective flows in porous media, and then analyses various examples of transition from convective to absolute instability in detail, with an emphasis on the formulation, deduction of the dispersion relation and study of the numerical data regarding the threshold of absolute instability. The clear descriptions of the analytical and numerical methods needed to obtain these parametric threshold data enable readers to apply them in different or more general cases. This book is of interest to postgraduates and researchers in mechanical and thermal engineering, civil engineering, geophysics, applied mathematics, fluid mechanics, and energy technology.
Author : Abdullah Alhushaybari
Publisher :
Page : pages
File Size : 42,76 MB
Release : 2020
Category :
ISBN :
Author : Brian J. O'Donnell
Publisher :
Page : 210 pages
File Size : 38,89 MB
Release : 2000
Category : Convection (Meteorology)
ISBN :
Author : Arun Kumar Aggrawal
Publisher :
Page : 90 pages
File Size : 12,32 MB
Release : 1987
Category :
ISBN :
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 26 pages
File Size : 10,32 MB
Release : 2018-06-19
Category :
ISBN : 9781721278763
The objective is to establish a definitive role of the capillary, viscous, and inertial forces at a liquid-gas interface in the absence of gravity by using the fluid dynamics problem of the stability of a liquid jet as a vehicle. The objective is achieved by reexamining known theories and new theories that can be verified completely only in microgravity. The experiments performed in the microgravity facility at NASA Glenn Research Center enable the verification of the theory with experimental data. Of particular interest are (1) to capture for the first time the image of absolute instability, (2) to elucidate the fundamental difference in the physical mechanism of the drop and spray formation from a liquid jet, and (3) to find the origin of the newly discovered phenomenon of jet splitting on earth and in space. Lin, S. P. Glenn Research Center
Author : Xie-Yuan Yin
Publisher :
Page : pages
File Size : 23,27 MB
Release : 1999
Category :
ISBN :
Author : Hosne Ara Jasmine
Publisher :
Page : 0 pages
File Size : 28,95 MB
Release : 2003
Category :
ISBN :
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 38 pages
File Size : 17,41 MB
Release : 2018-08-10
Category :
ISBN : 9781725060241
Two aspects of the stability of a compressible mixing layer: Absolute/Convective instability and the convective Mach number were considered. It was shown that, for Mach numbers less than one, the compressible mixing layer is convectively unstable unless there is an appreciable amount of backflow. Also presented was a rigorous derivation of a convective Mach number based on linear stability theory for the flow of a multi-species gas in a mixing layer. The result is compared with the heuristic definitions of others and to selected experimental results. Jackson, T. L. and Grosch, C. E. Unspecified Center NASA-CR-181861, NAS 1.26:181861, ICASE-89-38 NAS1-18605; RTOP 505-90-21-01...
Author : Slah Jendoubi
Publisher :
Page : 476 pages
File Size : 21,44 MB
Release : 1995
Category :
ISBN :