Download or read book An Experimental Study of Flow Over a 6 to 1 Prolate Spheroid at Incidence written by Seungki Ahn and published by . This book was released on 1992 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: In two-dimensional flow, the point of flow separation from the surface coincides with the point at which the skin friction vanishes. However, in three-dimensional flow, the situation is much more complex and the flow separation is rarely associated with the vanishing of the wall shear stress except in a few special cases. Though the effects of cross-plane separation are substantial and have been recognised for some time, the phenomenon of flow separation over three-dimensional bodies is still far from being completely understood. The flow is so complex that no completely satisfactory analytical tools are available at the moment. In an attempt to logically identify the various effects and parametric dependence while simultaneously minimizing configuration dependent issue, the flow over a 6 to 1 prolate spheroid, which is a generic three-dimensional body, is investigated.
Download or read book A Computational Study of Flow Over a 6 1 Prolate Spheroid at Incidence written by Samuel Johnson and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the results of computational fluid dynamics (CFD) simulations predicting the overall forces and moments acting on an inclined 6:1 prolate spheroid in crossflow. Reynolds-averaged Navier-Stokes (RANS) was used to simulate flows with Reynolds numbers ranging from 1.39 million to 4.2 million at three inclination angles, 10, 20, and 30 degrees. The RANS cases used the k-omega shear-stress-transport (SST) turbulence model, though the k-epsilon and Spalart-Allmaras models were also used for comparison in certain cases. Three mesh types: structured overset, unstructured, and trimmed Cartesian were applied to the flow cases described above and their results compared. The RANS results agreed with experimental data best at the highest Reynolds number, matching pitching moments within 3% across the range of incidence angles considered. The k-omega SST model proved the best suited of the turbulence models to accurately reproduce the flow when compared to experiments. The three turbulence models produced similar results with only marginal differences. Wall-modeled large eddy simulation (WMLES) was also used to simulate flow for the 20-degree case at a Reynolds number of 4.2 million. A grid study was carried out with the structured WMLES grids to assess the sensitivity of the wall model to initial wall spacing. The variation in initial wall spacing resulted a 5% difference in the normal force predictions as well as a 10-degree shift in the azimuthal separation location along the length of the prolate spheroid.
Download or read book Computational and Experimental Study of Three Dimensional Separated Flow Structure Over Prolate Spheroids written by Steven M. Harrington and published by . This book was released on 1995 with total page 318 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 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Numerical Study of Separation on a Spheroid at Incidence written by and published by . This book was released on 1986 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Twenty First Symposium on Naval Hydrodynamics written by National Research Council and published by National Academies Press. This book was released on 1997-09-11 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Numerical Study of Separation on a Spheroid at Incidence written by M. Rosenfeld and published by . This book was released on 1986 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Results in Numerical and Experimental Fluid Mechanics IX written by Andreas Dillmann and published by Springer Science & Business Media. This book was released on 2014-01-25 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents contributions to the 18th biannual symposium of the German Aerospace Aerodynamics Association (STAB). The individual chapters reflect ongoing research conducted by the STAB members in the field of numerical and experimental fluid mechanics and aerodynamics, mainly for (but not limited to) aerospace applications, and cover both nationally and EC-funded projects. By addressing a number of essential research subjects, together with their related physical and mathematics fundamentals, the book provides readers with a comprehensive overview of the current research work in the field, as well as its main challenges and new directions. Current work on e.g. high aspect-ratio and low aspect-ratio wings, bluff bodies, laminar flow control and transition, active flow control, hypersonic flows, aeroelasticity, aeroacoustics and biofluid mechanics is exhaustively discussed here.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1967 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1993-05 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 43rd AIAA Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 2005 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1991 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Methods in Dynamics of Fluids and Solids written by M. Pichal and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: The General Assembly of the International Union of Theoreti cal and Applied Mechanics decided in Cambridge, United King dom, in 1982 to arrange the Symposium on Optical Methods in the Dynamics of Fluids and Solids. This decision was stimu lated by the fact that optical diagnostic methods are a more and more important tool in experimental mechanics. In contrast to the foregoing Symposium in Poitiers. 1976, which was devoted exclusively to optical methods in the me chanics of solids, it was a fruitful idea to bring together during the present Symposium scientists engaged in optical methods in the dynamics of all phases. It was proposed by the International Scientific Committee of the Symposium that contributions in experimental fluid dynamics should deal with transition from laminar to turbu lent flow, compressible fluid flow including high temperatu re flow, non-equilibrium phenomena in fluid dynamics and the interaction of fluid flow with solid boundaries and bodies. As regard. the mechanics of solids, the contributions should deal with the application of optical methods in the wave propagation in shock loaded bodies, in phenomena connected with the fracture mechanism, in nonstationary Vibrations of elements and parts of systems and in nonstationary strains in structures. The International Scientific Committee preferred to avoid invited lectures and in cooperation with the National Com mittees of IUTAM called for contribution from individual countries.
Download or read book Differential Reynolds Stress Modeling for Separating Flows in Industrial Aerodynamics written by Bernhard Eisfeld and published by Springer. This book was released on 2015-03-24 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent progress in the application of RANS turbulence models based on the Reynolds stress transport equations. A variety of models has been implemented by different groups into different flow solvers and applied to external as well as to turbo machinery flows. Comparisons between the models allow an assessment of their performance in different flow conditions. The results demonstrate the general applicability of differential Reynolds stress models to separating flows in industrial aerodynamics.
Download or read book Computational Fluid Dynamics Techniques written by Fathi Habashi and published by CRC Press. This book was released on 1995-11-22 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1995. Routledge is an imprint of Taylor & Francis, an informa company.
Download or read book 12th AIAA Applied Aerodynamics Conference written by and published by . This book was released on 1993 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulence in Complex Flows written by L. P. Purtell and published by . This book was released on 1994 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
