An Experimental And Numerical Investigation Of Three Dimensional Jet Flows From Sharp Edged Orifices Microform

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An Experimental And Numerical Investigation Of Three Dimensional Jet Flows From Sharp Edged Orifices Microform

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Author : Rainer Rudolf Schwab
language : en
Publisher: National Library of Canada
Release Date : 1986

An Experimental And Numerical Investigation Of Three Dimensional Jet Flows From Sharp Edged Orifices Microform written by Rainer Rudolf Schwab and has been published by National Library of Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.

Experimental And Numerical Investigation Of Three Dimensional Laminar Wall Jet Of Newtonian And Non Newtonian Fluids

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Author : Kofi F. K. Adane
language : en
Publisher:
Release Date : 2010

Experimental And Numerical Investigation Of Three Dimensional Laminar Wall Jet Of Newtonian And Non Newtonian Fluids written by Kofi F. K. Adane and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

A research program was designed to investigate the characteristics of three-dimensional laminar wall jet flow of both Newtonian and two shear-thinning non-Newtonian fluids. The non-Newtonian fluids were prepared from xanthan gum solutions of various concentrations. Both experimental and numerical methodologies were employed in this study. The wall jet was created using a circular pipe of diameter 7 mm and flows into an open fluid tank. The initial Reynolds numbers based on the pipe diameter and jet exit velocity ranged from 250 to 800. The velocity measurements were conducted using a particle image velocimetry technique. The measurements were conducted at several streamwise locations to cover both the developing and self-similar regions. For the numerical study, the complete nonlinear Navier-Stokes equation was solved using an in-house colocated finite volume based CFD code. A Carreau model was employed for the non-Newtonian fluids. The viscosity in the governing equations was obtained explicitly. From the PIV measurements and CFD results, velocity profiles and jet half-widths were extracted at selected downstream locations to study the effects of Reynolds number and specific fluid type on the jet characteristics. It was observed that the numerical results are in reasonable agreement with the experimental data. The decay of maximum velocity, jet spread rates, skin friction coefficient, streamwise velocity profiles, and secondary flows depend strongly on the initial Reynolds number irrespective of the fluid. The results also show that the jet spreads more in the spanwise direction than in the transverse direction in the early flow development whereas the reverse is true in the downstream region. Important differences were observed when the results for the non-Newtonian fluids were compared with those for Newtonian fluid.

A Numerical Investigation Of Three Dimensional Impinging Jets

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Author : Magdi H. Rizk
language : en
Publisher:
Release Date : 1985

A Numerical Investigation Of Three Dimensional Impinging Jets written by Magdi H. Rizk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.

Progress is reported on the direct numerical simulation complex VTOL flows using the full three-dimensional, time-dependent Navier-Strokes equations. The objective of this numerical simulation is to compute accurately the details of the flow, including the role of initial turbulence in the jet, the influence of forward motion on hover aerodynamics, the collision zone and fountain characteristics, and the jet structure and entrainment process in the transitional flight regime. The unsteady behavior of the jet flow due to forcing at a specific frequency has been investigated. Preliminary results on unsteady single-frequency forcing are presented and a discussion of work in the turbulence aspect of the problem is included. Keywords: Upwash fountain.

Experimental And Numerical Studies Of A Three Dimensional Water Jet Under Suction And Countercurrent Flows

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Author : J. E. Kowalski
language : en
Publisher:
Release Date : 1989

Experimental And Numerical Studies Of A Three Dimensional Water Jet Under Suction And Countercurrent Flows written by J. E. Kowalski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

An Experimental Investigation Of Three Dimensional Free Mixing Of Incompressible Turbulent Free Jets

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Author : Nicholas Trentacoste
language : en
Publisher:
Release Date : 1966

An Experimental Investigation Of Three Dimensional Free Mixing Of Incompressible Turbulent Free Jets written by Nicholas Trentacoste and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Jets categories.

An experimental investigation of the bulk properties of turbulent, three-dimensional, incompressible, air jets issuing into a quiescent air ambient is presented. The jet orifices utilized included rectangular, elliptical, axisymmetric and triangular geometries. Experimental results of pertinent mean flow properties such as axis velocity decay, half-width growth, etc., are reported. The flow fields of such jets are found to be characterized by three distinct regions in the axis velocity decay. The results obtained lead to the conclusion that low-speed jets which originate from non-axisymmetric orifices decay to axisymmetry far downstream of the jet exit. (Author).

An Experimental And Numerical Investigation Of A Turbulent Round Jet Issuing Into An Unsteady Crossflow

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Author : 夏麗萍
language : en
Publisher: Open Dissertation Press
Release Date : 2017-01-26

An Experimental And Numerical Investigation Of A Turbulent Round Jet Issuing Into An Unsteady Crossflow written by 夏麗萍 and has been published by Open Dissertation Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-26 with categories.

This dissertation, "An Experimental and Numerical Investigation of a Turbulent Round Jet Issuing Into an Unsteady Crossflow" by 夏麗萍, Liping, Xia, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3123789 Subjects: Unsteady flow (Aerodynamics) Jets - Fluid dynamics

An Experimental Investigation Of A Turbulent Incompressible Three Dimensional Wall Jet

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Author : Hermann Viets
language : en
Publisher:
Release Date : 1966

An Experimental Investigation Of A Turbulent Incompressible Three Dimensional Wall Jet written by Hermann Viets and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Turbulent boundary layer categories.

This paper presents an experimental investigation of the bulk properties of a turbulent, three-dimensional, incompressible air wall jet issuing into a quiescent air ambient from a rectangular orifice parallel to and at the surface of a flat plate. Results of this study indicate the characteristic features of such a dissipative flow. The behavior of a three-dimensional flow field of this nature has associated with it three distinct regions in the axis velocity decay with an approach to the flow field of a radial wall jet far downstream of the jet exit and on the centerline of the flow. Spreading rates in the various cross planes display a dependence upon the aforementioned characteristic regions. (Author).

An Experimental And Numerical Investigation Of A Turbulent Round Jet Issuing Into An Unsteady Crossflow

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Author : Liping Xia
language : en
Publisher:
Release Date : 1998

An Experimental And Numerical Investigation Of A Turbulent Round Jet Issuing Into An Unsteady Crossflow written by Liping Xia and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Jets categories.

Canadiana

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Author :
language : en
Publisher:
Release Date : 1989

Canadiana written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Canada categories.

An Experimental Investigation Of Three Dimensional Curved Wall Jets

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Author : Uday M. Patankar
language : en
Publisher:
Release Date : 1970

An Experimental Investigation Of Three Dimensional Curved Wall Jets written by Uday M. Patankar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.