Download or read book Theoretical Study of Turbulent Mixing in Inclined Ducted Jets written by Tirumalesa Duvvuri and published by . This book was released on 1975 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of the inclined plane incompressible ducted turbulent jet mixing with a jet injected into an inclined duct has been analysed using the curvilinear system of coordinates. This system is chosen because of the curved flow field in the initial mixing regions and the existence of similarity solutions when analysed in the orthogonal curvilinear coordinate system referred to the jet centerline. Integral techniques and the similarity solutions have been utilized to reduce the flow field to a quasi two-dimensional flow field. Appropriate differential equations have been developed for the various types of flow regions. A generalized method for predicting the induced secondary flow is presented.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Study of Turbulent Mixing Along Curved Jet Boundaries written by Tirumalesa Duvvuri and published by . This book was released on 1975 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of the turbulent mixing along the curved boundaries of a jet has been analyzed for an incompressible plane flow. The initial and fully developed regions of the curved mixing zone are analyzed with Tollmien and Goertler eddy viscosity models. It is shown that similarity solutions exist under certain conditions. A perturbation analysis is carried out to include the first order effects of curvature and growth of mixing zone. Comparison is made of the results of the numerical computation with the two eddy viscosity models. A parametric study of different centerline velocity decay rates and the external pressure gradient is made in the fully developed region.
Download or read book Experimental and theoretical investigation of three dimensional turbulent mixing in jets and ducts thesis written by George W. Carroll and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Experimental and Theoretical Investigation of Three dimensional Turbulent Mixing in Jets and Ducts written by George W. Carroll and published by . This book was released on 1980 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical and experimental investigation of three dimensional turbulent mixing in jets and ducts written by G. W. Carroll and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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).
Download or read book A Study of Non isoenergetic Turbulent Jet Mixing Between Compressible Subsonic Streams in Axi symmetric Constant Area Duct written by K. K. Khanna and published by . This book was released on 1969 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of turbulent mixing between two compressible streams in a constant area duct is analyzed. The velocity and temperature profiles were worked in the main region of the mixing chamber for axi-symmetric case. Turbulent free jet experimental data is used, to obtain expressions for velocity and temperature as a function of the distance from the inlet to the mixing chamber. It is found that energy diffuses more rapidly than momentum for ducted mixing. The results of the theoretical analysis indicate increasing tendency towards segregation of the streams for decreasing initial velocity difference between the mixing streams. On the basis of the mixing chamber length required to achieve adequate degree of mixing, it is concluded that a corrugated rim primary nozzle is needed to accelerate the mixing rate by increasing the contact surface between the streams. (Author).
Download or read book A Theoretical Investigation of the Free Turbulent Mixing of Coannular Jets written by Ingo Dathe and published by . This book was released on 1978 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development Progress Report written by United States. Office of Saline Water and published by . This book was released on 1970 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Desalting Literature 1969 written by Columbia Software, Inc and published by . This book was released on 1970 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical study of reactive and nonreactive turbulent coaxial jets written by Roop N. Gupta and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Theoretical Investigations of Turbulent Jets written by Jung-Tai Lin and published by . This book was released on 1971 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tracings: 12.20.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1977 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book An Investigation of Ducted Two Stream Variable Density Turbulent Jet Mixing with Recirculation written by and published by . This book was released on 1977 with total page 0 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.
Download or read book The Theory of Turbulent Jets written by G. N. Abramovich and published by Mit Press. This book was released on 1963 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author's first monograph on turbulent jets, in 1936, dealt solely with a free submerged jet. Since that time, the theory of the turbulent jet has been developed in many published works both in the USSR and abroad: it has been enriched with a large amount of experimental material and has been applied in many new fields of engineering. In the last 10 years very substantial progress has been made, and it has now become possible to go beyond the free submerged jet and to solve the problem of a jet in a stream of fluid, to take into account the interaction between the jet and solid walls, to ascertain the relationship between the contour of the jet and the ratio of its density to the density of the surrounding medium, and to establish the characteristic features of a supersonic jet. This monograph contains the results of further research by the author and his colleagues, as well as a critical reappraisal of the more important theoretical and experimental data published by other investigators. The first section deals with the theory of a turbulent jet of incompressible fluid. It gives a systematic analysis of numerous experimental data on velocity profiles, temperature, and the impurity concentration, as well as the outlines of the turbulent mixing lone. The second section sets forth the theory of turbulent gas jets, including strongly preheated and supersonic jets. The theory of free turbulence in a gas, suitable in principle for any degree of compressibility, is revised, and the equations are derived for motion and heat exchange in the boundary layer of a jet at very high temperature. The third section solves several problems of the spreading of jets in finite and semifinite space, and the fourth section describes various applications of the theory of jets, many of which are reported for the first time or have been significantly revised.
