Behavior of Turbulent Boundary Layers on Curved Convex Walls

Behavior of Turbulent Boundary Layers on Curved Convex Walls PDF Author: Hans Schmidbauer
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 570

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Book Description
The system of linear differential equations which indicated the approach of separation and the so-called "boundary-layer thickness" by Gruschwitz is extended in this report to include the case where the friction layer is subject to centrifugal forces. Evaluation of the data yields a strong functional dependence of the momentum change and wall drag on the boundary-layer thickness radius of curvature ratio for the wall. It is further shown that the transition from laminar to turbulent flow occurs at somewhat higher Reynolds Numbers at the convex wall than at the flat plate, due to the stabilizing effect of the centrifugal forces.

Behavior of Turbulent Boundary Layers on Curved Convex Walls

Behavior of Turbulent Boundary Layers on Curved Convex Walls PDF Author: Hans Schmidbauer
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 570

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Book Description
The system of linear differential equations which indicated the approach of separation and the so-called "boundary-layer thickness" by Gruschwitz is extended in this report to include the case where the friction layer is subject to centrifugal forces. Evaluation of the data yields a strong functional dependence of the momentum change and wall drag on the boundary-layer thickness radius of curvature ratio for the wall. It is further shown that the transition from laminar to turbulent flow occurs at somewhat higher Reynolds Numbers at the convex wall than at the flat plate, due to the stabilizing effect of the centrifugal forces.

Viscous Drag Reduction in Boundary Layers

Viscous Drag Reduction in Boundary Layers PDF Author:
Publisher: AIAA
ISBN: 9781600863783
Category : Boundary layer
Languages : en
Pages : 542

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Technical Note - National Advisory Committee for Aeronautics

Technical Note - National Advisory Committee for Aeronautics PDF Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 918

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Technical Note

Technical Note PDF Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 446

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The 1350 Degree Stress-rupture Properties of Two Wrought Alloys and Three Cast Alloys

The 1350 Degree Stress-rupture Properties of Two Wrought Alloys and Three Cast Alloys PDF Author: E. E. Reynolds
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 510

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Book Description
The rupture-test characteristics at 1350 degrees F of two wrought alloys in the solution-treated and aged condition, NR-82 (6059 modified-low carbon) and NR-84 (N-155 modified-low carbon), and three precision-cast alloys in aged condition, NR-71 (X-40), NR-87 (Co-Cr-Ni base-9Mo) and NR-90 (Co-Cr-Ni base-5Mo, 5W) are reported. The properties are shown to compare favorably with those of the strongeest similar alloys previously investigated. A correlation of NACA and OSRD data is presented, showing the variation of ruture strengths with temperature for the alloys between 1350 degrees and 2000 degrees F.

Journal of Heat Transfer

Journal of Heat Transfer PDF Author:
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 1170

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Introduction to the Theory of Flow Machines

Introduction to the Theory of Flow Machines PDF Author: Albert Betz
Publisher: Elsevier
ISBN: 1483180905
Category : Technology & Engineering
Languages : en
Pages : 300

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Book Description
Introduction to the Theory of Flow Machines details the fundamental processes and the relations that have a significant influence in the operating mechanism of flow machines. The book first covers the general consideration in flow machines, such as pressure, stress, and cavitation. In the second chapter, the text deals with ducts; this chapter discusses the general remarks, types of flow, and mixing process. Next, the book tackles the types of cascades, along with its concerns. The closing chapter covers the flow machine and its components, such as turbine, wheels, engines, and propellers. The text will be of great use to mechanical engineers and technicians.

Fluid Mechanics Measurements

Fluid Mechanics Measurements PDF Author: R. Goldstein
Publisher: Routledge
ISBN: 1351447823
Category : Technology & Engineering
Languages : en
Pages : 740

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Book Description
This revised edition provides updated fluid mechanics measurement techniques as well as a comprehensive review of flow properties required for research, development, and application. Fluid-mechanics measurements in wind tunnel studies, aeroacoustics, and turbulent mixing layers, the theory of fluid mechanics, the application of the laws of fluid mechanics to measurement techniques, techniques of thermal anemometry, laser velocimetry, volume flow measurement techniques, and fluid mechanics measurement in non-Newtonian fluids, and various other techniques are discussed.

Paper

Paper PDF Author:
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 648

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Index of NACA Technical Publications

Index of NACA Technical Publications PDF Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 616

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Book Description