Author: Pablo Hidalgo ArdanaPublisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 196
Book Description
Study of the Transition from Laminar to Turbulent Boundary Layer on a Flat Plate
Author: Pablo Hidalgo ArdanaPublisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 196
Book Description
A Visual Study of the Flow Model in the Later Stages of Laminar-turbulent Transition on a Flat Plate
Author: C. A. MeyerPublisher:
ISBN:
Category : Laminar flow
Languages : en
Pages : 106
Book Description
A number of aspects of transition from laminar to turbulent flow were investigated on a flat plate with free stream water velocities between .75 feet per second and 1.2 feet per second. The study was primarily visual, using dye techniques, although some measurements were made using a hot film anemometer. Also investigated were the later stages of natural transition. Dye patterns associated with the chain of events leading from laminar to turbulent flow in natural transition were analyzed. (Author).
Elements of Transitional Boundary-Layer Flowlements
Author: Robert Edward MaylePublisher: Logos Verlag Berlin GmbH
ISBN: 3832545980
Category : Science
Languages : en
Pages : 418
Book Description
Second Enhanced Edition Suitable for advanced-level courses or an independent study in fluid mechanics, this text by an expert in the field provides the basic aspects of laminar-to-turbulent flow transition in boundary layers. Logically organized into three major parts, the book covers pre- and post-transitional flow, transitional flow, and several advanced topics in periodically disturbed transitional flow. Some of the subjects covered within the book include high-frequency unsteady laminar flow, turbulent flow, natural transition, bypass transition, turbulent spot theory, turbulent spot kinematics and production, correlations for the onset and rate of transition, global and conditional averaging, transitional flow models, wakeinduced transition, multimode transition, and separated-flow transition. Containing some 202 figures (all drawn by the author), 28 tables, 12 appendices, a supplement on tensors, and an extensive bibliography, the 415 page book provides a wealth of data and information about the subject.
A Visual Study of the Flow Model in the Later Stages of Laminar-turbulent Transition on a Flat Plate
Author: K. A. MeyerPublisher:
ISBN:
Category : Laminar flow
Languages : en
Pages : 120
Book Description
A number of aspects of transition from laminar to turbulent flow were investigated on a flat plate with free stream water velocities between .75 feet per second and 1.2 feet per second. The study was primarily visual, using dye techniques, although some measurements were made using a hot film anemometer. Also investigated were the later stages of natural transition. Dye patterns associated with the chain of events leading from laminar to turbulent flow in natural transition were analyzed. (Author).
Numerical Studies on Laminar-turbulent Transition in Boundary Layers
Author: Kyung Soo YangNumerical Studies of Transition from Laminar to Turbulent Flow Over a Flat Plate
Author: D. F. De SantoPublisher:
ISBN:
Category : Laminar flow
Languages : en
Pages : 1
Book Description
A finite-difference technique is developed for analyzing the time-dependent two-dimensional flow of an incompressible viscous fluid over a semi-infinite flat plate. The complete (nonlinear) equations of motion for perturbed Blasius flow are numerically integrated with respect to time, and the propagation of disturbances in the boundary layer is determined. An analysis of the theoretical convergence and stability properties of the difference scheme is carried out. The method developed has been employed in two test calculations, in which slightly unstable oscillatory disturbances have been introduced at some upstream point. The numerical solutions exhibit many of the major theoretical and experimentally observed features associated with transition from laminar to turbulent boundary-layer flow. (Author).
Boundary Layers
Author: Alec David YoungPublisher: AIAA (American Institute of Aeronautics & Astronautics)
ISBN:
Category : Science
Languages : en
Pages : 296
Book Description
Following an introduction to the basic physical concepts and the theoretical framework of boundary layers, discussion includes laminar boundary layers, the physics of the transition from laminar to turbulent flow, the turbulent boundary layer and its governing equations in time-averaging form, drag prediction by integral methods, turbulence modeling and differential methods, and current topics and problems in research and industry.
Numerical Solution of Laminar and Turbulent Boundary Layer Equations Including Transition, and Experimental Study of a Flat Plate with a Blunt Fin at Incidence
Author: Alice J. Chen (CAPT, USAF.)Publisher:
ISBN:
Category : Laminar flow
Languages : en
Pages :
Book Description
Boundary-Layer Theory
Author: Hermann Schlichting (Deceased)Publisher: Springer
ISBN: 366252919X
Category : Technology & Engineering
Languages : en
Pages : 814
Book Description
This new edition of the near-legendary textbook by Schlichting and revised by Gersten presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with particular emphasis on the flow past bodies (e.g. aircraft aerodynamics). The new edition features an updated reference list and over 100 additional changes throughout the book, reflecting the latest advances on the subject.
Recent Results in Laminar-Turbulent Transition
Author: Siegfried WagnerPublisher: Springer Science & Business Media
ISBN: 9783540404903
Category : Science
Languages : en
Pages : 350
Book Description
Methodic investigations of laminar-turbulent transition in wall-bounded she ar flows under controlled conditions are essential for untangling the various complex phenomena of the transition process occurring in flows at practical conditions. They allow understanding of the instability processes of the la minar flow, and thus enable the development of tools for flow control. On the one hand the laminar flow regime can be extended by delaying transition to reduce viscous drag, and on the other hand large-scale flow disturbances or transition can be forced in order to enhance momentum and mass ex change. Thus flow separation can be prevented, or mixing of fuel and air in combustion engines enhanced, for instance. The "DFG Verbund-Schwerpunktprogramm Transition" - a cooperative priority research program of universities, research establishments and indu stry in Germany - has been launched in April 1996 with the aim to explore transition by a coordinated use, development and validation of advanced experimental techniques and theoretical/numerical simulation methods, bin ding together all the appropriate resources available in Germany. At the very beginning of the six-year research period specifically selected test problems were to be investigated by various theoretical and experimental methods to identify and possibly rule out inadequate numerical or experimental methods. With respect to experiments it was planned to use multi-sensor-surface measuring techniques, the infrared measuring technique, and particle image velocimetry (PlV) in addition to hot-wire techniques to get instantaneous images of flows in sections, on surfaces, or within the complete flow field.