Download Free An Analysis Of Experimental Results From Turbulent Axially Symmetric Free Jets Book in PDF and EPUB Free Download. You can read online An Analysis Of Experimental Results From Turbulent Axially Symmetric Free Jets and write the review.

The development of any inhomogeneous free-turbulence flow in an incompressible fluid is predicted through the use of a general self-preservation hypothesis. The analytical solutions are verified by comparison with experimental data on mean-flow and turbulence characteristics of plane and axisymmetric jets in coaxial parallel flow with and without confinement, of an axisymmetric jet in a cross flow, and of the wake behind a self-propelled body. Emphasis is placed on the distinct turbulence structure of the various flows as revealed by the different axial variations of a shear parameter relating turbulence shear to mean velocity. The satisfactory predictions obtained by the new approach make it appear to have a more general application (e.g., to plumes and wall jets) than the examples chosen might imply. (Author).
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.
Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.
The report is concerned with the theoretical and experimental study of the interaction of semi-confined, subsonic, turbulent jets, the application of the results to fluidics being one of the primary objectives in mind. The theoretical results obtained both through the use of the free-streamline theory and a new momentum analysis for both the single and symmetric control-jet configurations are presented in the first part of the report. The second part covers the detailed experimental investigations of the jet deflection and the velocity-and turbulence-profile measurements obtained with a hot-wire anemometer for both the single-control-jet and summetric beam-deflection type amplifiers. Finally, the results of the two parts of the study are compared and the advantages and shortcomings of the various analyses are presented. (Author).