Download or read book Penetration and Mixing of Fully modulated Turbulent Jets in Crossflow written by Monica Pacheco-Tougas and published by . This book was released on 1998 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Penetration and Mixing of Fully pulsed Turbulent Jets in Crossflow written by H. Johari and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interactions of a Fully Modulated Inclined Jet with a Crossflow written by Bertrand P. E. Dano and published by . This book was released on 2006 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jets in crossflow are used in a wide range of engineering applications and have been studied for more than 60 years. The transversal penetration and structure of a jet placed in a crossflow is known to be strongly three-dimensional. It is believed that, by using a pulsed jet inclined in the crossflow direction, the momentum transport can be controlled in two very efficient ways: the pulse can increase the jet penetration and the mixing downstream, while the inclination avoids the creation of a reverse flow at the jet exit and may extend the mixing area further downstream. Although some results are available in the literature focusing on components of this problem, none addresses the combination of these two factors. Moreover, most of these studies use elaborate flow visualizations and 2-D velocity measurement methods that may not be adequate to elucidate the complexity of such a flow. This study addresses these issues by using stereoscopic PIV measurements for a steady and fully modulated jet at a constant mean velocity ratio, V[subscript r], of 3.4. For the steady jet case, the effect of the jet Reynolds number, Re[subscript j], is investigated. For the pulsed case, the effect of a low pulsing frequency is considered as well as the pulse duty cycle. For each case, the mean three-component velocity field is examined. Proper Orthogonal Analysis (POD) of vorticity and turbulent kinetic energy are used to further evaluate the vortical and turbulent characteristics of the jet. In addition, a vortex detection algorithm, and 3D rendering of the flow streamlines are used to study the near field vortical flow structure of the jet flow.

Download or read book Manipulation and Control of Jets in Crossflow written by Ann R. Karagozian and published by Springer. This book was released on 2014-05-04 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental Non-Reactive Jets in Crossflow and Other Jet Systems; Background on Modeling, Dynamical Systems, and Control; Reactive Jets in Crossflow and Multiphase Jets; Controlled Jets in Crossflow and Control via Jet Systems;

Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2006 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Active Flow and Combustion Control 2014 written by Rudibert King and published by Springer. This book was released on 2014-09-13 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book reports on the latest theoretical and experimental advances in the field of active flow and combustion control. It covers new developments in actuator technology and sensing, in robust and optimal open- and closed-loop control, as well as in model reduction for control. It collects contributions presented during the third edition of the Active Flow and Combustion Control conference, held in September 10-12, 2014 at the Technische Universität Berlin (Germany). This conference, as well as the research presented in the book, have been supported by the collaborative research center SFB 1029 -Substantial efficiency increase in gas turbines through direct use of coupled unsteady combustion and flow dynamics, funded by the DFG (German Research Foundation).

Download or read book Wind Tunnels and Experimental Fluid Dynamics Research written by Jorge Colman Lerner and published by BoD – Books on Demand. This book was released on 2011-07-27 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book "Wind Tunnels and Experimental Fluid Dynamics Research" is comprised of 33 chapters divided in five sections. The first 12 chapters discuss wind tunnel facilities and experiments in incompressible flow, while the next seven chapters deal with building dynamics, flow control and fluid mechanics. Third section of the book is dedicated to chapters discussing aerodynamic field measurements and real full scale analysis (chapters 20-22). Chapters in the last two sections deal with turbulent structure analysis (chapters 23-25) and wind tunnels in compressible flow (chapters 26-33). Contributions from a large number of international experts make this publication a highly valuable resource in wind tunnels and fluid dynamics field of research.

Download or read book Active Flow Control written by Rudibert King and published by Springer Science & Business Media. This book was released on 2007-05-31 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains contributions presented at the Active Flow Control 2006 conference, held September 2006, at the Technische Universität Berlin, Germany. It contains a well balanced combination of theoretical and experimental state-of-the-art results of Active Flow Control. Coverage combines new developments in actuator technology, sensing, robust and optimal open- and closed-loop control and model reduction for control.

Download or read book 29th AIAA Fluid Dynamics Conference written by and published by . This book was released on 1998 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AIAA Aerospace Sciences Meeting and Exhibit 42nd written by and published by . This book was released on 2004 with total page 574 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 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Inlet Geometry on the Mixing of an Incompressible Turbulent Jet in a Crossflow written by Daniel D. Lauterbach and published by . This book was released on 1992 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MIXING OF A TURBULENT JET IN A TURBULENT CROSS FLOW written by and published by . This book was released on 1975 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 40th AIAA Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 2002 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Near Field Mixing Characteristics of a Variable Density Non Reacting Jet in a Hot Vitiated Crossflow written by Kyle T Linevitch (Jr) and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mixing characteristics in the "extreme" near field of a non-reacting jet in crossflow were experimentally investigated in an environment relevant to gas turbine combustors. A turbulent jet was injected into a hot vitiated crossflow of combustion products at 1500K. Different jet-to-crossflow momentum flux ratios and jet-to-crossflow density ratios were studied using three different jet exit velocity profiles; a fully developed turbulent pipe flow with 4% turbulence intensity (TI), a top-hat flow with 8% TI, and a turbulent pipe-like flow with 40% TI. Center-plane scalar mixing of the jet and crossflow were investigated using measured temperature fields from planar laser Rayleigh scattering. Jet trajectory, centerline concentration decay, scalar dissipation and mixing time scales were determined as a function of the above-mentioned jet parameters to characterize the jet-crossflow mixing characteristics. The observed center-plane mixing metrics indicated that better near field mixing was exhibited for lower values of the momentum flux ratio and larger values of density ratio. As the momentum flux ratio increased, windward and leeward mixing decreased. The magnitude of scalar dissipation in the windward region decreased as the momentum flux increased, while the leeward dissipation region increased in size and magnitude as momentum flux ratio increased. When the density ratio was decreased, both the windward and leeward dissipation regions reduced in size and magnitude. The top-hat and turbulent pipe jet exit velocity profiles displayed similar mixing characteristics while the 40% TI profile exhibited deeper jet penetration, slower centerline concentration decay rates, and lower scalar dissipation.

Download or read book Experiments on Confined Turbulent Jets in Cross Flow written by Yasuhiro Kamotani and published by . This book was released on 1974 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: