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Book I Turbulent Intensities and Shear Stress in the Two Dimensional Wall Jet

Download or read book I Turbulent Intensities and Shear Stress in the Two Dimensional Wall Jet written by Donald Boyd Owings and published by . This book was released on 1962 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States

Download or read book Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1959 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Oscillating Grid Turbulence and Its Influence on Gas Liquid Mass Transfer and Mixing in Non Newtonian Media

Download or read book Oscillating Grid Turbulence and Its Influence on Gas Liquid Mass Transfer and Mixing in Non Newtonian Media written by Tom Lacassagne and published by . This book was released on 2018 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of turbulence induced mass transfer at the interface between a gas and a liquid is of great interest in many environmental phenomena and industrial processes. Even though this issue has already been studied for several decades, its understanding is still not good enough to create realistic models (RANS or sub-grid LES), especially when considering a liquid phase with a complex rheology. This experimental work aims at studying fundamental aspects of turbulent mass transfer at a flat interface between carbon dioxide and a Newtonian or non-Newtonian liquid, stirred by homogeneous and quasi isotropic turbulence. Non-Newtonian fluids studied are aqueous solutions of a model polymer, Xanthan gum (XG), at various concentrations, showing viscoelastic and shear-thinning properties. Optical techniques for the acquisition of the liquid phase velocity field (Stereoscopic Particle Image Velocimetry, SPIV) and dissolved gas concentration field (Inhibited Planar Laser Induced Fluorescence, I-PLIF) are for the first time coupled, keeping a high spatial resolution, to access velocity and concentration statistics in the first few millimetres under the interface. A new version of I-PLIF is developed. It is designed to be more efficient for near surface measurements, but its use can be generalized to other single or multiphase mass transfer situations. Bottom shear turbulence in the liquid phase is generated by an oscillating grid apparatus. The mechanisms of turbulence production and the characteristics of oscillating grid turbulence (OGT) are studied. The importance of the oscillatory component of turbulence is discussed. A mean flow enhancement effect upon polymer addition is evidenced. The mechanisms of turbulent mass transfer at a flat interface are finally observed in water and low concentration polymer solutions. A conditional analysis of turbulent mass fluxes allows to distinguish the type of events contributing to mass transfer and discuss their respective impact in water and polymer solutions.

Book Heat Transfer from Surfaces of Non uniform Temperature Distribution

Download or read book Heat Transfer from Surfaces of Non uniform Temperature Distribution written by Harold H. Sogin and published by . This book was released on 1960 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an investigation of the distribution of the local rate of mass transfer from 4.2-inch diameter naphthalene cylinders to air flowing normal to the axis. The air speeds, ranging from 58 to 166 ft/sec, are in the critical zone. The temperatures range frm 73.6 to 84.7F. The results in the laminar region have been compared with predictions based on the approximate boundary-layer calculations of H. Schuh and of H. J. Merk. Also the results are compared with the heat transfer measurements of Schmidt and Wenner and of Zapp, and the mass transfer measurements of WInding and Cheney. The effect of changing the turbulence intensity of the main stream from 0.8 to 2.4 percent by means of a wire grid is also presented.

Book Analogy Between Mass and Heat Transfer with Turbulent Flow

Download or read book Analogy Between Mass and Heat Transfer with Turbulent Flow written by Edmund E. Callaghan and published by . This book was released on 1953 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of combined heat and mass transfer from a flat plate has been made in terms of Prandtl's simpified physical concept of the turbulent boundary layer. The results of the analysis show that tor conditioins of reasonably small heat and mass transfer, the ratio of the mass- and heat-transfer coefficients is dependent on the Reynolds number of the boundary layer, the Prandtl number of the medium of diffusion, and the Schmidt number of the diffusing fluid in the medium of diffusion. For the particular case of water evaporating into air, the ratio of mass-transfer coefficient to heat-transfer coefficient is found to be slightly greater than unity.

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 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Book Monthly Catalog of United States Government Publications  Cumulative Index

Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1978 with total page 1300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Applied Mechanics Reviews

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Turbulence and Mass Transfer with an Oscillating Grid

Download or read book Turbulence and Mass Transfer with an Oscillating Grid written by Joseph John Orlins and published by . This book was released on 1999 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Some Studies of a Wall Jet

Download or read book Some Studies of a Wall Jet written by William Primm Cosart and published by . This book was released on 1959 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: