Download or read book Analysis of Unsteady Internal and External Flows at Low Reynolds Numbers written by Manuel Munoz and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis presents the development and application of a numerical method to obtain solutions of unsteady external and internal flows at low Reynolds numbers. In the first part of the thesis, time-accurate solutions of the Navier-Stokes equations for the unsteady external flows are calculated in a fixed computational domain that is obtained from a physical domain through a time-dependent coordinate transformation. This method uses finite-difference and artificial compressibility on a stretched staggered grid, which is second-order accurate in space and time. A special decoupling procedure, based on the utilization of the continuity equation, is applied in conjunction with an alternating-direction implicit (ADI) scheme to enhance substantially the computational efficiency of the method by reducing the problem to the solution of a set of scalar tri-diagonal systems of equations. This method is applied to obtain solutions for unsteady flows past oscillating airfoils at low Reynolds numbers. Solutions are presented for the unsteady aerodynamic coefficients (lift, drag and moment coefficients and lift-to-drag ratio) of the airfoils executing pitching and plunging oscillations at low Reynolds numbers. In addition, the unsteady flow separations on the upper and lower surfaces of the oscillating airfoil are thoroughly studied. The influence of various geometric and flow parameters, such as camber and the relative thickness, the Reynolds number, the amplitude and frequency of the pitching and plunging oscillations, on the unsteady aerodynamic coefficients and on the flow separation is also analyzed. The second part of the thesis presents the analysis of the unsteady confined flow past a downstream-facing step, generated by harmonic variations in time of the inflow velocity and by an oscillating wall, which display multiple flow separation regions on the upper and lower walls. The influence of the Reynolds number, of the oscillation frequency, and the amplitudes of the inflow velocity and oscillating wall on the formation of the flow separation regions are thoroughly analyzed." --

Download or read book Slow Viscous Flows written by P. N. Shankar and published by Imperial College Press. This book was released on 2007 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an account of internal, external and unsteady slow viscous flows, including the advances. This book shows how the method of eigenfunctions, in conjunction with least squares, can be used to solve problems of low Reynolds number flows, including three-dimensional internal and unsteady flows.

Download or read book Low Reynolds Number written by Mustafa Serdar Genç and published by BoD – Books on Demand. This book was released on 2012-04-04 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports the latest development and trends in the low Re number aerodynamics, transition from laminar to turbulence, unsteady low Reynolds number flows, experimental studies, numerical transition modelling, control of low Re number flows, and MAV wing aerodynamics. The contributors to each chapter are fluid mechanics and aerodynamics scientists and engineers with strong expertise in their respective fields. As a whole, the studies presented here reveal important new directions toward the realization of applications of MAV and wind turbine blades.

Download or read book Stagnation point Flow of a Variable property Fluid at Low Reynolds Numbers written by Michael Lenard and published by . This book was released on 1962 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steady, viscous, two-dimensional and axially symmetric stagnation-point flows of a gas are considered for the case when the Reynolds number is too low for the applicability of the classical boundary-layer theory. It is assumed that the low-density gas is still a continuous fluid, permitting the use of the Navier-Stokes and as associated equations as the basis of the problem. The effects of low Reynolds number are determined by applying an expansion procedure to the fluid dynamical equations.

Download or read book Numerical Simulation Studies of Unsteady Low Reynolds Number Separated Flows written by Mahidhar Tatineni and published by . This book was released on 2002 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Slow Viscous Flows Qualitative Features And Quantitative Analysis Using Complex Eigenfunction Expansions With Cd rom written by P N Shankar and published by World Scientific. This book was released on 2007-09-28 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides a unified and systematic account of internal, external and unsteady slow viscous flows, including the latest advances of the last decade, some of which are due to the author. The book shows how the method of eigenfunctions, in conjunction with least squares, can be used to solve problems of low Reynolds number flows, including three-dimensional internal and unsteady flows, which until recently were considered intractable. Although the methods used are quantitative, much stress is laid on understanding the qualitative nature of these intriguing flows. A secondary purpose of the book is to explain how the complex eigenfunction method can be used to solve problems in science and engineering.Although primarily aimed at graduate students, academics and research engineers in the areas of fluid mechanics and applied mathematics, care has been taken, through the use of numerous diagrams and much discussion, to explain to the non-specialist the qualitative features of these complex flows./a

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unsteady Separated Flows written by Marvin Luttges and published by . This book was released on 1993 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluid Mechanics written by Pijush K. Kundu and published by Academic Press. This book was released on 2012 with total page 919 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suitable for both a first or second course in fluid mechanics at the graduate or advanced undergraduate level, this book presents the study of how fluids behave and interact under various forces and in various applied situations - whether in the liquid or gaseous state or both.

Download or read book Convective Heat Transfer in Porous Media written by Yasser Mahmoudi and published by CRC Press. This book was released on 2019-11-06 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on heat transfer in porous media, this book covers recent advances in nano and macro’ scales. Apart from introducing heat flux bifurcation and splitting within porous media, it highlights two-phase flow, nanofluids, wicking, and convection in bi-disperse porous media. New methods in modeling heat and transport in porous media, such as pore-scale analysis and Lattice–Boltzmann methods, are introduced. The book covers related engineering applications, such as enhanced geothermal systems, porous burners, solar systems, transpiration cooling in aerospace, heat transfer enhancement and electronic cooling, drying and soil evaporation, foam heat exchangers, and polymer-electrolyte fuel cells.

Download or read book Twenty Second Symposium on Naval Hydrodynamics written by National Research Council and published by National Academies Press. This book was released on 2000-03-02 with total page 1039 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Twenty-Second Symposium on Naval Hydrodynamics was held in Washington, D.C., from August 9-14, 1998. It coincided with the 100th anniversary of the David Taylor Model Basin. This international symposium was organized jointly by the Office of Naval Research (Mechanics and Energy Conversion S&T Division), the National Research Council (Naval Studies Board), and the Naval Surface Warfare Center, Carderock Division (David Taylor Model Basin). This biennial symposium promotes the technical exchange of naval research developments of common interest to all the countries of the world. The forum encourages both formal and informal discussion of the presented papers, and the occasion provides an opportunity for direct communication between international peers.

Download or read book Computational Fluid Dynamics written by Jiyuan Tu and published by Butterworth-Heinemann. This book was released on 2012-11-07 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to CFD fundamentals and using commercial CFD software to solve engineering problems, designed for the wide variety of engineering students new to CFD, and for practicing engineers learning CFD for the first time. Combining an appropriate level of mathematical background, worked examples, computer screen shots, and step by step processes, this book walks the reader through modeling and computing, as well as interpreting CFD results. The first book in the field aimed at CFD users rather than developers. New to this edition: A more comprehensive coverage of CFD techniques including discretisation via finite element and spectral element as well as finite difference and finite volume methods and multigrid method. Coverage of different approaches to CFD grid generation in order to closely match how CFD meshing is being used in industry. Additional coverage of high-pressure fluid dynamics and meshless approach to provide a broader overview of the application areas where CFD can be used. 20% new content .

Download or read book Computational Techniques and Applications CTAC written by and published by . This book was released on 1989 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation Into the Nature of Steady Separated Flows at Large Reynolds Numbers written by Andrew S. Grove and published by . This book was released on 1963 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reduced order Modeling of Unsteady Flow Over Two Collinear Plates at a Low Reynolds Numbers written by Abdulrahman N. Almashjary and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Boundary Integral and Singularity Methods for Linearized Viscous Flow written by C. Pozrikidis and published by Cambridge University Press. This book was released on 1992-02-28 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: In addition to theory, this study focuses on practical application and computer implementation in a coherent introduction to boundary integrals, boundary element and singularity methods for steady and unsteady flow at zero Reynolds numbers.