Oil-flow Separation Patterns on an Ogive Forebody
Author: Earl R. Keener
Publisher:
Published: 1981
Total Pages: 38
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Earl R. Keener
Publisher:
Published: 1981
Total Pages: 38
ISBN-13:
DOWNLOAD EBOOKAuthor: Earl R. Keener
Publisher:
Published: 1986
Total Pages: 156
ISBN-13:
DOWNLOAD EBOOKAuthor: Paul K. Chang
Publisher: Elsevier
Published: 2014-06-28
Total Pages: 800
ISBN-13: 1483181286
DOWNLOAD EBOOKInterdisciplinary and Advanced Topics in Science and Engineering, Volume 3: Separation of Flow presents the problem of the separation of fluid flow. This book provides information covering the fields of basic physical processes, analyses, and experiments concerning flow separation. Organized into 12 chapters, this volume begins with an overview of the flow separation on the body surface as discusses in various classical examples. This text then examines the analytical and experimental results of the laminar boundary layer of steady, two-dimensional flows in the subsonic speed range. Other chapters consider the study of flow separation on the two-dimensional body, flow separation on three-dimensional body shape and particularly on bodies of revolution. This book discusses as well the analytical solutions of the unsteady flow separation. The final chapter deals with the purpose of separation flow control to raise efficiency or to enhance the performance of vehicles and fluid machineries involving various engineering applications. This book is a valuable resource for engineers.
Author: Earl R. Keener
Publisher:
Published: 1986
Total Pages: 148
ISBN-13:
DOWNLOAD EBOOKAuthor: D. D'Ambrosio
Publisher:
Published: 1995
Total Pages: 38
ISBN-13:
DOWNLOAD EBOOKAuthor: Joseph H. Citriniti
Publisher:
Published: 1992
Total Pages: 146
ISBN-13:
DOWNLOAD EBOOKAuthor: Jean Délery
Publisher: John Wiley & Sons
Published: 2013-02-28
Total Pages: 181
ISBN-13: 1118579887
DOWNLOAD EBOOKThis book develops concepts and a methodology for a rational description of the organization of three-dimensional flows considering, in particular, the case where the flow is the place of separations. The descriptive analysis based on the critical point theory of Poincaré develops conventional but rather unfamiliar considerations from aerodynamicists, who face the understanding of complex flows including multiple separation lines and vortices. These problems concern industrial sectors where aerodynamics plays a key role, such as aerospace, ground vehicles, buildings, etc. Contents 1. Skin Friction Lines Pattern and Critical Points. 2. Separation Streamsurfaces and Vortex Structures. 3. Separated Flow on a Body. 4. Vortex Wake of Wings and Slender Bodies. 5. Separation Induced by an Obstacle or a Blunt Body. 6. Reconsideration of the Two-Dimensional Separation. 7. Concluding Remarks. About the Authors Jean Délery is a Supaero (French National Higher School of Aeronautics and Space) engineer who has worked at Onera (French national aerospace research center) since 1964. He has participated in several major French and European aerospace programs, is the author of many scientific publications, and has occupied various teaching positions particularly at Supaero, the University of Versailles-Saint-Quentin, Ecole polytechnique in France and “La Sapienza” University in Rome, Italy. He is currently emeritus adviser at Onera.
Author: K. C. Wang
Publisher:
Published: 1976
Total Pages: 80
ISBN-13:
DOWNLOAD EBOOKSeparation patterns of three-dimensional flow are discussed here, partly on the basis of limited calculated results, but mostly on experimental observations and intuition. Generally the separation pattern is rather independent of whether the boundary layer is laminar or turbulent and whether the flow is incompressible or hypersonic. The difference is in degree, not character. Various three-dimensional separation criteria are reviewed and the open-vs-closed separation idea, particularly is presented, in detail. The bulk of this work is divided into three parts, dealing with the separation over elongated inclined bodies, airplane wings at incidence, and around the corners between intersecting bodies.
Author: David J. Peake
Publisher:
Published: 1980
Total Pages: 232
ISBN-13:
DOWNLOAD EBOOKAuthor: Norman D. Malmuth
Publisher:
Published: 2007
Total Pages: 36
ISBN-13:
DOWNLOAD EBOOKThis report summarizes theoretical and CFD studies related to surface discharge to quench stall-slip departure due to asymmetric vortex shedding on aircraft nose tips, augment directional control/authority agility, and develop tailless capability. This approach offers adaptability in rapidly changing flight and mission conditions, constructional simplicity, massless operation, no changes in aerodynamic shape, no influence on aircraft characteristics when the system is not in use, and low weight and power penalties, and closed loop feedback control. In the first phase of the effort, lower-order theoretical modeling showed that vortex symmetry breakdown strongly depends on the boundary-layer separation locus. The latter can be effectively controlled by a surface discharge located upstream from the separation line. Using spark discharges of relatively small power (less than 1 kW) it is feasible to shift the separation line toward the windward surface and suppress vortex asymmetry.