comparison of plane turbulent wakes by digital image analysis techniques.
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comparison of plane turbulent wakes by digital image analysis techniques. by Dennis Frank Visentin

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Published .
Written in English


Book details:

The Physical Object
Pagination78 leaves
Number of Pages78
ID Numbers
Open LibraryOL20850807M

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The area of each image plane is about mm×mm and the leading edge is about mm downstream of the wire mesh. images, which corresponds to seconds of measurement, has been acquired in each plane to enable statistical analyses. Analysis of the rms velocity shows that averaging over samples gives relative errors less than. Jan 01,  · Digital image analysis of cine pictures of an unconfined rich premixed turbulent flame has been used to determine structural characteristics of the turbulent/non-turbulent interface of the flame. The results, comprising various moments of the interface position, probability density functions and correlation functions, establish that the instantaneous flame-interface position is essentially a Cited by: 5. CRITICAL POINTS AND THREE-DIMENSIONAL FEATURES IN A PLANE TURBULENT WAKE. Author links open overlay panel A. Vernet 1 G.A. Kopp 2 Francesc Giralt 3. plane turbulent wakes. () have shown, using spectral analysis, that a peak that is visible in the far wake region in v-autospectra or in u-v coherence functions is also discernible in Author: A. Vernet, G.A. Kopp, Francesc Giralt. Comparison between two and three-dimensional POD in a turbulent boundary layer using multi-plane stereoscopic PIV analysis and modeling of turbulent flows is illustrated. of digital image.

IMAGE BLURRING DUE TO TURBULENT WAKES FOR AIRBORNE SYSTEMS: FLIGHT TESTS Stanislav Gordeyev * a, Nicholas De Lucca, Yakov Diskin b, Eric J. Jumper a, Matthew R. Whiteley b a University of Notre Dame, Notre Dame IN, USA ; b MZA Associates Corporation., Technology Ct. Suite , Dayton, OH USA ABSTRACT. turbulent regions separately when studying turbulence situations where the interaittency is significant. In digital analysis an interaiitency: signal usually consists of a series of ones or zeros, depending on whether the signal is turbulent or not at a particular point. I Intenaitvency signals and zone averages a n generally obtained using. Direct Simulation of a Self-Similar Plane Wake Robert D. Moser and Michael M. Rogers NASA Ames Research Center Moffett Field CA, USA 1. SUMMARY Direct simulations of two time-developing turbulent wakes have been performed. Initial conditions for the simulations were obtained from two realizations of a di-. Sep 01,  · Results are compared to the experiments of Ong and Wallace (, “The Velocity Field of the Turbulent Very Near Wake of a Circular Cylinder,” Exp. Fluids, 20(6), pp. –) and Lourenco and Shih (, “Characteristics of the Plane Turbulent Near Wake of a Circular Cylinder: A Particle Image Velocimetry Study,” private Cited by:

Read chapter Propeller Wake Analysis Behind a Ship by Stereo PIV: This report is part of a series of reports that summarize this regular event. The repor. In this paper, a detailed analysis of the hydrodynamic characteristics of the wake at a plane equal to a distance of diameters downstream from the thruster, at advance coefficient values of 0, , and are presented for both the LDV and SPIV measurements showing a Cited by: 1. Studies in wall turbulence using dual plane particle image velocimetry and direct numerical simulation data A DISSERTATION SUBMITTED TO THE FACULTY OF THE GRADUATE SCHOOL OF THE UNIVERSITY OF MINNESOTA BY Neelakantan Saikrishnan IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Doctor Of Philosophy February, Engineering Turbulence Modelling and Experiments The improved model was validated by calculations of plane channel flow and the comparison with DNS data and five existing models. Digital image analysis of two impinging circular jets. N. Toy, E. Savory, P J Disimile.