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Book Theoretical and Experimental Investigations on the Mixing of Isoenergetic Confined Co axial Jets

Download or read book Theoretical and Experimental Investigations on the Mixing of Isoenergetic Confined Co axial Jets written by W. Tabakoff and published by . This book was released on 1970 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of experimental results for turbulent mixing between two compressible streams in a constant area duct is presented. The experimental results are for area ratios 3 and 7.16, for velocity ratios ranging from 0.4 to 2.8, and with velocity magnitudes varying from 200 ft/sec. to 950 ft/sec. A new constant of turbulence is recommended for the theoretical analysis of the confined jet mixing which uses the free jet mixing concepts. The regions in which this analysis could be used are delineated. (Author).

Book An Experimental Investigation of the Mixing of Compressible air Jets in a Coaxial Configuration

Download or read book An Experimental Investigation of the Mixing of Compressible air Jets in a Coaxial Configuration written by James M. Eggers and published by . This book was released on 1969 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulent mixing of compressible air in supersonic and subsonic coaxial jet flows.

Book Research on Mixing of Coaxial Streams

Download or read book Research on Mixing of Coaxial Streams written by Andrew A. Fejer and published by . This book was released on 1967 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents the results of experimental and analytical investigations of the confined coaxial mixing of isoenergetic air streams. Both uniflowing and counterflowing secondary air streams are considered. Laminar and turbulent uniflow mixing are treated analytically. The results of experimental investigations of turbulent mixing are used to calculate the radial as well as the axial variations of eddy viscosity and the turbulent diffusion coefficient up to 25 jet diameters downstream of jet orifice. New expressions are developed to yield reliable values in regions of mixing where existing expressions become indeterminate. Special consideration is given to the case where the two streams have equal velocity. The experimental investigation of turbulent counterflow mixing shows that a toroidal shaped vortex is set up at the jet interface which gives rise to depressed static pressures. Over the range of parameters investigated, entrainment of fluid from the inner jet into the external stream takes place downstream of the vortex. (Author).

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1971 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Experimental and Theoretical Investigation of Confined Two stream Variable Density Turbulent Jet Mixing with Recirculation

Download or read book An Experimental and Theoretical Investigation of Confined Two stream Variable Density Turbulent Jet Mixing with Recirculation written by Roy James Schulz and published by . This book was released on 1976 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research in Progress

Download or read book Research in Progress written by and published by . This book was released on 1969 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Journal of Aircraft

Download or read book Journal of Aircraft written by and published by . This book was released on 1972 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Analytical and Experimental Investigations of Incompressible and Compressible Mixing of Streams and Jets

Download or read book Analytical and Experimental Investigations of Incompressible and Compressible Mixing of Streams and Jets written by Illinois. University. Dept. of Aeronautical Engineering and published by . This book was released on 1955 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Investigation of Ducted Two stream Variable density Turbulent Jet Mixing with Recirculation

Download or read book An Investigation of Ducted Two stream Variable density Turbulent Jet Mixing with Recirculation written by Roy J. Schulz and published by . This book was released on 1977 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was conducted of two-stream, variable-density, turbulent jet mixing with recirculation confined within an axisymmetric duct that simulated a combustor configuration. The recirculating flow fields in the combustor simulator were the result of coaxial jet mixing between a central, primary air stream with a velocity of about 650 ft/sec and an annular secondary stream of hydrogen with velocities of 13, 23, or 48 ft/sec, depending on the desired test conditions. Experimental measurements are presented of radial distributions of time-averaged axial velocity and hydrogen mass fraction, axial distributions of time-averaged static pressure on the duct wall, axial velocity on the duct centerline, and hydrogen mass fraction on the duct wall and on the duct centerline. A theoretical study of the experimental flows was also conducted using a finite difference numerical solution technique for the calculation of viscous, recirculating flows. Comparison of theory and experiment shows that the predictive technique and the turbulence transport model require further development before accurate prediction of recirculating turbulent flows can be realized.

Book Study of Non Isoenergetic Turbulent Jet Mixing in a Constant Area Duct

Download or read book Study of Non Isoenergetic Turbulent Jet Mixing in a Constant Area Duct written by J. H. Blasenak and published by . This book was released on 1976 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of non-isoenergetic turbulent jet mixing between two streams has been conducted. Using a previously derived theoretical analysis for ducted mixing, an experimental investigation was performed to verify this theory and to determine the non-isoenergetic turbulent jet mixing characteristics in a constant area duct. Temperature profiles were measured at several axial locations in the duct for both a concentric and an eccentric configuration. It was determined that the oretical and experimental temperature profiles agreed fairly well for both cases, although the concentric case showed better agreement than the eccentric case. It was also determined that a new constant of turbulence in the initial region was needed for non-isoenergetic mixing, mixing is generally more rapid than the theory predicted, the initial temperature difference between the two streams did not have much effect on the rate of mixing and a higher area ratio produced better agreement between the theory and the experimental data. It was concluded that the theory was good for a fairly simplified analysis. (Author).

Book Applied Mechanics Reviews

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1967 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Experimental Investigation of the Turbulent Mixing on Non homogeneous Coaxial Jets

Download or read book An Experimental Investigation of the Turbulent Mixing on Non homogeneous Coaxial Jets written by Louis J. Alpinieri and published by . This book was released on 1963 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental results on the turbulent mixing process between carbon dioxide and hydrogen central jets exhausting into a moving concentric stream of air are presented. The diffusion of mass and momentum only are considered, since both streams are at approximately equal temperature. The flow velocities are in the low to high subsonic range. Principal points of investigation are the condition of equal velocity between jets and the condition of equal mass flow per unit area between jets. Radial and axial distributions of concentration and velocity are presented. On the basis of the measurements it is concluded that no tendency towards segregation of the stream exists when either the velocities or the mass flows of the streams are equal. Furthermore, it is demonstrated that the product of local density and eddy kinematic viscosity coefficient can be assumed to be solely dependent upon the axial coordinate. In agreement with previous results it is found that mass diffuses more readily than momentum. Finally, a formulation of the eddy viscosity and eddy diffusivity coefficients that adequately describe the results obtained is derived. (Author).