I Theoretical And Experimental Investigation Of Flow Over Single And Double Backward Facing Steps

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Theoretical And Experimental Investigation Of Flow Over Single And Double Backward Facing Steps

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Author : Douglas Eugene Abbott
language : en
Publisher:
Release Date : 1961

Theoretical And Experimental Investigation Of Flow Over Single And Double Backward Facing Steps written by Douglas Eugene Abbott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Boundary layer categories.

I Theoretical And Experimental Investigation Of Flow Over Single And Double Backward Facing Steps

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Author : Douglas Eugene Abbott
language : en
Publisher:
Release Date : 1961

I Theoretical And Experimental Investigation Of Flow Over Single And Double Backward Facing Steps written by Douglas Eugene Abbott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Hydrodynamics categories.

Theoretical And Experimental Investigation Of Flow Over Single And Double Backward Facing Steps

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Author : Stanford University. Thermosciences Division. Thermosciences Division
language : en
Publisher:
Release Date : 1961

Theoretical And Experimental Investigation Of Flow Over Single And Double Backward Facing Steps written by Stanford University. Thermosciences Division. Thermosciences Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Boundary layer categories.

A semi-empirical analysis is developed for the over-all flow pattern of subsonic turbulent flow over backward facing steps. Good agrement is found between theory and experiment for the prediction of two-dimensional reattachment length for small values of step height to throat width ratio; an asymptotic solution for large values of step height is also given and discussed. Mean velocity profiles calculated by the present analysis are shown; they require an empirical fit at one point. Good agreement with experiment is found in the region near the step face, but agreement is poor near the reattachment region. Experimental results are represented for flow patterns over backward facing steps covering a wide range of geometric variables. Velocity profile measurements are given for both single and double steps. The stall region is shown to consist of a complex pattern involving three distinct regions. The double step contains an asymmetry for large expansions, but approaches the single-step configuration with symmetric stall regions for small values of area ratio. No effect on flow pattern or reattachment length is found for a wide range of Reynolds numbers and turbulence intensities, provided the flow is fully turbulent before the step. (Author).

Nasa Technical Paper

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Author :
language : en
Publisher:
Release Date : 1985

Nasa Technical Paper written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Astronautics categories.

Technical Abstract Bulletin

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Author : Defense Documentation Center (U.S.)
language : en
Publisher:
Release Date : 1961-10

Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961-10 with Military art and science categories.

A Critical Evaluation Of Various Turbulence Models As Applied To Internal Fluid Flows

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Author : M. Nallasamy
language : en
Publisher:
Release Date : 1985

A Critical Evaluation Of Various Turbulence Models As Applied To Internal Fluid Flows written by M. Nallasamy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Computational fluid dynamics categories.

U S Government Research Reports

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Author :
language : en
Publisher:
Release Date : 1961

U S Government Research Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Science categories.

Nasa Technical Note

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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1964

Nasa Technical Note written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Aeronautics categories.

An Analytical And Experimental Study Of The Plane Incompressible Turbulent Free Shear Layer With Arbitrary Velocity Ratio And Pressure Gradient

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Author : Cullen Milo Sabin
language : en
Publisher:
Release Date : 1963

An Analytical And Experimental Study Of The Plane Incompressible Turbulent Free Shear Layer With Arbitrary Velocity Ratio And Pressure Gradient written by Cullen Milo Sabin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Shear flow categories.

A first order approximation is derived in similarity coordinates for the velocity variation across a mixing zone between two streams of different velocities in an arbitrary pressure gradient. The velocity profiles obtained are functions of a single parameter, the ratio of the velocity of the slow stream to that of the fast stream. The first order velocity profiles are compared to those obtained from the complete solution to the zero pressure gradient case by Gortler and good agreement is found when the velocity ratio is greater than 0.5. The form of the eddy diffusivity appropriate to the first order theory is determined from analysis and experimental data. This form leads to an explicit transformation for the similarity coordinate requiring only a single empirical constant for all cases. This similarity coordinate is shown to reduce to Gortler's variable in the constant pressure case. Expressions for the shear and the mixing layer width for the general case are presented, and shown to check the data from several cases. A hot wire anemometer which was specially designed and constructed for taking the experimental data in a water channel is described. (Author).

An Experimental Investigation Of The Structure Of A Turbulent Reattaching Flow Behind A Backward Facing Step

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Author : Stephen W. Pronchick
language : en
Publisher:
Release Date : 1983

An Experimental Investigation Of The Structure Of A Turbulent Reattaching Flow Behind A Backward Facing Step written by Stephen W. Pronchick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Turbulent boundary layer categories.

The structure of a turbulent reattaching flow behind a backward-facing step was studied experimentally in a low-velocity water channel, in order to observe the physical structure of the flow and to better understand the relation.