Turbulent Wall Jet in a Coflowing Stream PDF Download
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Author: James Franklin Campbell
Publisher:
ISBN:
Category : Jets
Languages : en
Pages : 40
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Book Description
Author: James Franklin Campbell
Publisher:
ISBN:
Category : Jets
Languages : en
Pages : 40
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Book Description
Author: Demosthenes Papailiou
Publisher:
ISBN:
Category :
Languages : en
Pages : 77
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Book Description
The mechanism by which wall jets prevent boundary layer separation and diffuser stall has been experimentally examined. Mean velocity profiles and turbulence statistics in both the separated and jet-energized boundary layer have been measured in the presence of a coflowing stream and adverse pressure gradients. Some preliminary conclusions are suggested. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 562
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Book Description
Author: V. Kruka
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
The wall-jet is the flow of fluid emanating from a narrow slot and blowing over a rigid wall. The width of the slot is of the order of the boundary layer on the infinite wall and the jet, in this case, mixes with a stream moving with constant velocity. This flow has drawn considerable basic and applied interest in the past few years for it has the characteristics of both a boundary layer and a free mixing flow. The present experimental investigation of a plane, steady, turbulent wall-jet with negligible longitudinal pressure gradients in a constant moving stream, with varying ratios of jet to free stream velocity definitely supports Glauert's reasoning (The Wall-Jet. J. Fluid Mech., v.1, part 6, 1956), though the precise point of partition of the flow might be in question. The inner layer is constantly losing momentum due to the frictional stresses at the wall, while the outer layer preserves its momentum; the division now occurring at the point of zero shear which is not at the maximum velocity. The analysis and experimental results are compared with those of previous investigators and a definite comparison of this work with those performed in a quiescent free stream is achieved through transformation of coordinates. (Author).
Author: Mnaouar Chouchane
Publisher: Springer
ISBN: 3319175270
Category : Technology & Engineering
Languages : en
Pages : 814
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Book Description
This book offers a collection of original peer-reviewed contributions presented at the 6th International Congress on Design and Modeling of Mechanical Systems (CMSM’2015), held in Hammamet, Tunisia, from the 23rd to the 25th of March 2015. It reports on both recent research findings and innovative industrial applications in the fields of mechatronics and robotics, dynamics of mechanical systems, fluid structure interaction and vibroacoustics, modeling and analysis of materials and structures, and design and manufacturing of mechanical systems. Since its first edition in 2005, the CMSM Congress has been held every two years with the aim of bringing together specialists from universities and industry to present the state-of-the-art in research and applications, discuss the most recent findings and exchange and develop expertise in the field of design and modeling of mechanical systems. The CMSM Congress is jointly organized by three Tunisian research laboratories: the Mechanical Engineering Laboratory of the National Engineering School of Monastir; the Mechanical Laboratory of Sousse, part of the National Engineering School of Sousse; and the Mechanical, Modeling and Manufacturing Laboratory at the National Engineering School of Sfax.
Author: R. A. Antonia
Publisher:
ISBN: 9780869340257
Category : Jets
Languages : en
Pages : 36
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1814
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 994
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1408
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Book Description
Author: Jean Piquet
Publisher: Springer Science & Business Media
ISBN: 3662035596
Category : Technology & Engineering
Languages : en
Pages : 767
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Book Description
obtained are still severely limited to low Reynolds numbers (about only one decade better than direct numerical simulations), and the interpretation of such calculations for complex, curved geometries is still unclear. It is evident that a lot of work (and a very significant increase in available computing power) is required before such methods can be adopted in daily's engineering practice. I hope to l"Cport on all these topics in a near future. The book is divided into six chapters, each· chapter in subchapters, sections and subsections. The first part is introduced by Chapter 1 which summarizes the equations of fluid mechanies, it is developed in C~apters 2 to 4 devoted to the construction of turbulence models. What has been called "engineering methods" is considered in Chapter 2 where the Reynolds averaged equations al"C established and the closure problem studied (§1-3). A first detailed study of homogeneous turbulent flows follows (§4). It includes a review of available experimental data and their modeling. The eddy viscosity concept is analyzed in §5 with the l"Csulting ~alar-transport equation models such as the famous K-e model. Reynolds stl"Css models (Chapter 4) require a preliminary consideration of two-point turbulence concepts which are developed in Chapter 3 devoted to homogeneous turbulence. We review the two-point moments of velocity fields and their spectral transforms (§ 1), their general dynamics (§2) with the particular case of homogeneous, isotropie turbulence (§3) whel"C the so-called Kolmogorov's assumptions are discussed at length.
