Finite-amplitude Stability of Slowly-rotating Pipe Flow PDF Download
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Author: Jean-Pierre Demurger
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Book Description
Author: Jean-Pierre Demurger
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Author: Norman Toplosky
Publisher:
ISBN:
Category :
Languages : en
Pages : 498
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Author: Denise Ruth Barnes
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Bill Hsueh-ping Chen
Publisher:
ISBN:
Category :
Languages : en
Pages : 192
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Book Description
Author: Rui Gong
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 119
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Author: P. Bradshaw
Publisher:
ISBN:
Category : Finite differences
Languages : en
Pages : 37
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Book Description
Descriptions of some theoretical and experimental studies of the behaviour of finite amplitude disturbances in viscous flow are presented. An analysis is developed for disturbances (1) which are oscillatory and grow with streamwise distance between parallel planes until a possible equilibrium state is reached, or (2) which depart from an unstable equilibrium state of finite amplitude with streamwise distance; these two possibilities correspond to disturbances under supercritical and subcritical conditions respectively, and in both the solution is a perturbation from linearized theory. An experiment is described by which it is proposed to check the above theory. Some details are also given of results of a parallel experiment on finite disturbances in flow in a straight pipe in which the growth of artificially introduced disturbances and the generation of harmonics is described qualitatively, and limited support is found for some of the theoretical concepts. Breaking patterns similar to those found by Klebanoff and Tidstrom in a boundary layer are shown to be horseshoe vortices. (Author).
Author: Kah Hie Lau
Publisher:
ISBN:
Category :
Languages : en
Pages : 204
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Book Description
Author: Frithiof I. Niordson
Publisher: Elsevier
ISBN: 1483221067
Category : Technology & Engineering
Languages : en
Pages : 470
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Book Description
Theoretical and Applied Mechanics covers the proceedings of the 16th International Congress of Theoretical and Applied Mechanics, held at the Technical University of Denmark, Lyngby, Denmark on August 19-25, 1984. The contributors consider the significant advances in the thriving field of mechanics. This book is composed of 21 chapters, and begins with an overview of space research contributions in understanding fluid media mechanics. This topic is followed by discussions on some aspects and fundamentals of mechanics, such as chaos, computer application, resonant phenomena, adiabaticity, and nonlinear acoustics. The following chapters explore the various applications of theoretical and applied mechanics, including in marine structures, oil recovery, and ice and snow mechanics. This book also deals with nonlinear wave motion, hydrodynamic systems, ocean wave spectra, and Helmholtz concept. The remaining chapters look into the issues of steady water bifurcation, concept of anisotropic soils, and flow visualization. This book is of great value to physicists and research workers who wish to expand their knowledge in mechanics.
Author: Kamal Selvam
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The thesis deals with numerical and experimental investigations of flow through circular pipes with smaller inlet and larger outlet diameter, also known as expansion pipes. The hydrodynamic expansion pipe flow is globally stable for high Reynolds number. In order to numerically simulate these types of flows, large computational domains that could accommodate the linearly growing symmetric recirculation region is needed. Moreover, experimental studies of expansion pipe flows indicate that the transition occurs at lower Reynolds number than predicted by the linear stability theory. The reason for early transition is due to the presence of imperfections in the experimental setup, which acts as a finite-amplitude perturbation of the flow. Three-dimensional direct numerical simulations of the Navier-Stokes equations with two different types of perturbations (i) the tilt and (ii) the vortex are investigated. First, the tilt perturbation, which applied at the inlet, creates an asymmetric recirculation region and then breaks to form localised turbulence downstream the expansion section. Second, the vortex perturbation, creates structures that looks like lower order azimuthal mode, resembles an optimally amplified perturbation. It grows due to convective instability mechanism and then breaks to form localised turbulence. Spatial correlation and the proper orthogonal decomposition reveal that this localised turbulence gains it energy from the core flow coming out of the inlet pipe.
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1468451979
Category : Science
Languages : en
Pages : 407
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
