Effects Of Surface Roughness On The Flow Characteristics In A Turbulent Boundary Layer
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Effects Of Surface Roughness On The Flow Characteristics In A Turbulent Boundary Layer
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Author :
language : en
Publisher:
Release Date : 2001
Effects Of Surface Roughness On The Flow Characteristics In A Turbulent Boundary Layer written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
An Analytical Study Of The Effects Of Surface Roughness On A Compressible Turbulent Boundary Layer
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Author :
language : en
Publisher:
Release Date : 1983
An Analytical Study Of The Effects Of Surface Roughness On A Compressible Turbulent Boundary Layer written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
A previous study on the effect of surface roughness on the turbulent boundary layer, using a Fortran code, ITRACT, solved for the characteristics of a laminar, transitional and turbulent boundary layer on smooth surfaces. The present study investigates the influence of surface roughness on a compressible turbulent boundary layer and then extends the usefulness of ITRACT by including in it the optional capability of rough-surface boundary-layer calculations. Surface roughness was represented by distributed sources and sinks in the appropriate governing equations. The most important term is a sink term in the mean momentum equation, representing the form drag due to the roughness element. Governing boundary-layer equations for continuity, momentum, and energy were derived in a form to account for blockage effects due to roughness elements. The modified governing equations were then transformed using Probstein-Elliott and Levy-Lees transformations. The resulting equations, with appropriate boundary conditions, were solved by finite-difference techniques to determine the nondimensional velocity components and temperature at a finite number of nodes in the boundary-layer flow field.
An Experimental Investigation Of The Effects Of Several Types Of Surface Roughness On Turbulent Boundary Layer Characteristics At Supersonic Speeds
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Author : Felix W. Fenter
language : en
Publisher:
Release Date : 1958
An Experimental Investigation Of The Effects Of Several Types Of Surface Roughness On Turbulent Boundary Layer Characteristics At Supersonic Speeds written by Felix W. Fenter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Turbulent boundary layer categories.
A Theoretical Analysis Of The Effects Of Surface Roughness On The Turbulent Boundary Layer In Compressible Flow With Zero Heat Transfer
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Author : F. W. Fenter
language : en
Publisher:
Release Date : 1955
A Theoretical Analysis Of The Effects Of Surface Roughness On The Turbulent Boundary Layer In Compressible Flow With Zero Heat Transfer written by F. W. Fenter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Aerodynamics, Supersonic categories.
Experimental Study Of Turbulent Boundary Layer Flows Over Forward Facing Steps With Different Surface Conditions
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Author : Weijie Shao
language : en
Publisher:
Release Date : 2014
Experimental Study Of Turbulent Boundary Layer Flows Over Forward Facing Steps With Different Surface Conditions written by Weijie Shao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The Effects Of Roughness On Turbulent Boundary Layers
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Author : Fanxiao Meng
language : en
Publisher:
Release Date : 2014
The Effects Of Roughness On Turbulent Boundary Layers written by Fanxiao Meng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
In this thesis, the effects of roughness on turbulent boundary layers are investigated by both the experimental and analytical methods. Two aspects of roughness are investigated, including the similarity between the smooth and rough turbulent boundary layers, and the characteristics of the flow over the step changes in roughness. Based on the data from the thesis of Akinlade (2005), the validity of three different kinds of outer scales is examined for the defect law in the context of smooth surface and three different types of rough surfaces. Furthermore, a mathematical relation is derived to further investigate the roughness effects. For the second topic, experiments were performed on a smooth-rough-smooth transition in a wind tunnel using a boundary layer Pitot tube. In addition, the growth rates of internal boundary layer thicknesses are determined using the method of Antonia and Luxton (1971, 1972), and the results are compared with the previous studies.
The Effects Of Surface Roughness On The Heat Transfer And Friction Coefficients For Turbulent Boundary Layer Flow
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Author : D. R. Croft
language : en
Publisher:
Release Date : 1961
The Effects Of Surface Roughness On The Heat Transfer And Friction Coefficients For Turbulent Boundary Layer Flow written by D. R. Croft and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.
Effect Of Local Surface Roughness On Turbulent Boundary Layer Wall Pressure Spectra And Transition Burst Onset
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Author : Edmund J. O'Keefe
language : en
Publisher:
Release Date : 1975
Effect Of Local Surface Roughness On Turbulent Boundary Layer Wall Pressure Spectra And Transition Burst Onset written by Edmund J. O'Keefe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Plates (Engineering) categories.
An experimental study of boundary-layer velocity profiles and turbulent wall-pressure spectra on a smooth flat plate with varying localized roughness conditions is reported. The sandpaper surface roughness ranged from a smooth wall to the fully rough condition. Transition and turbulent flow data are consistent with those in the published literature. In addition, new data have been obtained for the wall-pressure spectra for a complete range of roughness conditions. Formulas for estimating the increase in wall spectra levels due to varying surface-roughness conditions are presented.
Boundary Layer Flows
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Author : Vallampati Ramachandra Prasad
language : en
Publisher: BoD – Books on Demand
Release Date : 2020-01-22
Boundary Layer Flows written by Vallampati Ramachandra Prasad and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-22 with Mathematics categories.
Written by experts in the field, this book, "Boundary Layer Flows - Theory, Applications, and Numerical Methods" provides readers with the opportunity to explore its theoretical and experimental studies and their importance to the nonlinear theory of boundary layer flows, the theory of heat and mass transfer, and the dynamics of fluid. With the theory's importance for a wide variety of applications, applied mathematicians, scientists, and engineers - especially those in fluid dynamics - along with engineers of aeronautics, will undoubtedly welcome this authoritative, up-to-date book.
Flow Control Techniques And Applications
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Author : Jinjun Wang
language : en
Publisher: Cambridge University Press
Release Date : 2018-12-13
Flow Control Techniques And Applications written by Jinjun Wang and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-13 with Science categories.
Master the theory, applications and control mechanisms of flow control techniques.