Author: D. Drikakis
Publisher: Springer Science & Business Media
Published: 2005-08-02
Total Pages: 623
ISBN-13: 354026454X
DOWNLOAD EBOOK →The study of incompressible ?ows is vital to many areas of science and te- nology. This includes most of the ?uid dynamics that one ?nds in everyday life from the ?ow of air in a room to most weather phenomena. Inundertakingthesimulationofincompressible?uid?ows,oneoftentakes many issues for granted. As these ?ows become more realistic, the problems encountered become more vexing from a computational point-of-view. These range from the benign to the profound. At once, one must contend with the basic character of incompressible ?ows where sound waves have been analytically removed from the ?ow. As a consequence vortical ?ows have been analytically “preconditioned,” but the ?ow has a certain non-physical character (sound waves of in?nite velocity). At low speeds the ?ow will be deterministic and ordered, i.e., laminar. Laminar ?ows are governed by a balance between the inertial and viscous forces in the ?ow that provides the stability. Flows are often characterized by a dimensionless number known as the Reynolds number, which is the ratio of inertial to viscous forces in a ?ow. Laminar ?ows correspond to smaller Reynolds numbers. Even though laminar ?ows are organized in an orderly manner, the ?ows may exhibit instabilities and bifurcation phenomena which may eventually lead to transition and turbulence. Numerical modelling of suchphenomenarequireshighaccuracyandmostimportantlytogaingreater insight into the relationship of the numerical methods with the ?ow physics.
Author: Pijush K. Kundu
Publisher: Academic Press
Published: 2012
Total Pages: 919
ISBN-13: 0123821002
DOWNLOAD EBOOK →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.
Author: Robert V. Hess
Publisher:
Published: 1949
Total Pages: 108
ISBN-13:
DOWNLOAD EBOOK →In Part 1 a point-by-point method is developed for the calculation of unsteady flows through tubes with variable cross sections containing strong shocks and large temperature contact discontinuities. In Part 2 calculations are made of the flow pattern created by bursting into a vacuum of a diaphragm at the minimum section of a supersonic nozzle without a second throat. In Part 3 integral relationships are developed which describe as a whole the behavior of unsteady flow disturbances of large and small amplitudes. The invariant integrals are the conservation laws for the potential, pulse area, mass, and energy.
Author: A. Hanifi
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 540
ISBN-13: 9401145156
DOWNLOAD EBOOK →This single-volume work gives an introduction to the fields of transition, turbulence, and combustion modeling of compressible flows and provides the physical background for today’s modeling approaches in these fields. It presents basic equations and discusses fundamental aspects of hydrodynamical instability.