Download or read book Extended Measurements of the Two dimensional Turbulent Wake written by Christos Christakis Alexopoulos and published by . This book was released on 1968 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mixing of Wakes in a Turbulent Shear Flow written by Salamon Eskinazi and published by . This book was released on 1959 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulence Measurements in a Two Dimensional Compressible Wake written by A. Demetriades and published by . This book was released on 1969 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes turbulence measurements in a compressible, two-dimensional wake of a slender, adiabatic model. The constant-current hot-wire anemometer was used to map the axial and lateral variations of the following properties: velocity and density (temperature) fluctuations, their cross correlation coefficient, their one-dimensional spectral functions and their longitudinal integral scales. The results are generally in agreement with predictions of the Dynamic Equilibrium Hypothesis by which scaling laws the wake structure behind vehicles at all speeds and altitudes might be predicted. In particular, the axis values of the velocity and density fluctuations asymptotically become constant fractions of the velocity and density deficits, and they become anti-correlated; however the lateral distributions are somewhat different from the equivalent distributions at low speeds. The off-axis maxima of the fluctuations are not located at the region of maximum shear. The integral scales of velocity proportional to the wake growth. The one-dimensional spectra were not followed beyond a frequency limited by the system, but since the Reynolds number of turbulence is low, no spectral activity was expected beyond the integral scale. Between the axis and the wake edge the spectra are distorted by a peak with a wavelength slightly smaller than the wake width, which is more prominant in the density rather than the velocity and which is probably indicative of a non-random turbulent front. (Author).
Download or read book Prediction of Characteristics of Two Dimensional Turbulent Wakes Under the Influence of Streamline Curvature and Zero Positive and Negative Pressure Gradients written by and published by . This book was released on 1996 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two Dimensional Turbulent Wakes written by Canada. Defence Research Board. Reprints and published by . This book was released on 1966 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The equations of mean motion indicate that two-dimensional turbulent wakes, when subjected to appropriately tailored adverse pressure gradients, can be self-preserving. An experimental examination of two nearly self-preserving wakes is reported. Mean velocity, longitudinal and lateral turbulence intensity, intermittency and shear stress distributions were measured and compared with Townsend's data from the small-deficit undistorted wake. In comparison with the undistorted case, the present wakes have slightly lower turbulent intensities and significantly lower shear stresses, all quantities being nondimensionalized by a local velocity scale taken as the maximum mean velocity deficit. A consideration of the reasons for the shear stress reduction leads to an expression from which the shear stresses in any symmetrical free equilibrium shear flow can be found. This relationship is used to calculate the rate of growth in the measured wakes, with reasonable success. (Author).
Download or read book Measured and Calculated Mean flow Properties of a Two dimensional Hypersonic Turbulent Wake written by Richard Dirk Wagner and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hypersonic turbulent wake produced by a wedge was studied experimentally and its properties were compared with predictions obtained from a numerical computation procedure. In the computation procedure several models for the eddy viscosity formulation of the turbulent transport were examined. Conventional-defect models and a modified mixing-length model were found to yield good predictions of the experimental data. The classical mixing-length model gave unrealistic results. The experimental data displayed similarity when velocity and temperature defects were scaled by the maximum defects and the transverse coordinate was scaled by the velocity-defect half-width.
Download or read book 2019 20 MATRIX Annals written by Jan de Gier and published by Springer Nature. This book was released on 2021-02-10 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: MATRIX is Australia’s international and residential mathematical research institute. It facilitates new collaborations and mathematical advances through intensive residential research programs, each 1-4 weeks in duration. This book is a scientific record of the ten programs held at MATRIX in 2019 and the two programs held in January 2020: · Topology of Manifolds: Interactions Between High and Low Dimensions · Australian-German Workshop on Differential Geometry in the Large · Aperiodic Order meets Number Theory · Ergodic Theory, Diophantine Approximation and Related Topics · Influencing Public Health Policy with Data-informed Mathematical Models of Infectious Diseases · International Workshop on Spatial Statistics · Mathematics of Physiological Rhythms · Conservation Laws, Interfaces and Mixing · Structural Graph Theory Downunder · Tropical Geometry and Mirror Symmetry · Early Career Researchers Workshop on Geometric Analysis and PDEs · Harmonic Analysis and Dispersive PDEs: Problems and Progress The articles are grouped into peer-reviewed contributions and other contributions. The peer-reviewed articles present original results or reviews on a topic related to the MATRIX program; the remaining contributions are predominantly lecture notes or short articles based on talks or activities at MATRIX.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Fluid Mechanics Supplement 1 written by Nicholas P Cheremisinoff and published by Gulf Professional Publishing. This book was released on 1993-05-03 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: This supplement to the comprehensive series "Encyclopedia of Fluid Mechanics" steps back from the topical approach to fluid mechanics, and embraces the overall subject from an entirely mathematical viewpoint. Within the pure science of mathematics, the motion of particles and fluids is described and studies without the uncertainty that can accompany experimental investigations. This volume addresses the mathematical details of model formation and development, which constitutes the basis for numerical experimentation. It is intended to stimulate and report current and emerging concepts in pure research on flow dynamics.
Download or read book Report written by United States. National Bureau of Standards and published by . This book was released on 1963 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Aeronautical Journal written by and published by . This book was released on 2005 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Recent Measurements in a Two dimensional Turbulent Channel written by John Laufer and published by . This book was released on 1950 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Image Velocimetry written by Ronald J. Adrian and published by Cambridge University Press. This book was released on 2011 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle image velocimetry, or PIV, refers to a class of methods used in experimental fluid mechanics to determine instantaneous fields of the vector velocity by measuring the displacements of numerous fine particles that accurately follow the motion of the fluid. Although the concept of measuring particle displacements is simple in essence, the factors that need to be addressed to design and implement PIV systems that achieve reliable, accurate, and fast measurements and to interpret the results are surprisingly numerous. The aim of this book is to analyze and explain them comprehensively.
Download or read book ASME Technical Papers written by and published by . This book was released on 1975 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wind Tunnel Wall Interference January 1980 May 1988 written by Marie H. Tuttle and published by . This book was released on 1988 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shape of Two dimensional Turbulent Wakes in Density stratified Fluids written by and published by . This book was released on 1968 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of an analytical and experimental investigation of the rate of growth of the zone of turbulent mixing behind a two-dimensional circular cylinder are presented. The analytical phase of the study formulated a dynamical model for a parcel of fluid subjected to inertia, turbulent damping, and gravity restoring forces. The experiments were conducted in a tank 120 in. long and 4.5 in. wide which was filled to a depth of 18 in. with a fluid having a linear density gradient. The cylinder was towed at mid-depth by a variable speed motor-pulley system. A record of wake growth behind the cylinder was made by means of motion pictures of an aluminum pigment tracer in the fluid. The Reynolds number ranged from 1300 to 3500 and densimetric Froude numbers varied from 5 to 20. The density stratification was found to exert a strong inhibiting force on the wake growth. Using the dynamical model to correlate experimental data, the mixing length in the turbulent zone was found to decrease with increasing density stratification. (Author).
Download or read book Japanese Science and Technology written by and published by . This book was released on 1986 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
