The effects of curvature on the turbulent boundary layer
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The effects of curvature on the turbulent boundary layer by V. C. Patel

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Published by H.M.S.O. in London .
Written in English

Subjects:

  • Turbulent boundary layer.,
  • Curvature.

Book details:

Edition Notes

Statementby V. C. Patel.
SeriesAeronautical Research Council. Reports and memoranda, no. 3599, Reports and memoranda (Aeronautical Research Council (Great Britain)) ;, no. 3599.
Classifications
LC ClassificationsTL526.G7 A4 no. 3599
The Physical Object
Pagination[1], 31 p.
Number of Pages31
ID Numbers
Open LibraryOL4652604M
ISBN 100114702004
LC Control Number77491861
OCLC/WorldCa811686

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Stabilizing, destabilizing, and secondary flow effects of streamline curvature on laminar and turbulent wakes behind a circular cylinder have been examined qualitatively and quantitatively. Experiments were carried out using a flow visualization method, a hot-wire anemometer and a signal by: 8. Effects of convex wall curvature on turbulent boundary layer flow are studied in this article using a numerical method. Since the non-linear k−ε model often used in engineering applications. Tuncer Cebeci, in Analysis of Turbulent Flows with Computer Programs (Third Edition), Effect of Transverse Curvature. First-order boundary-layer theory is based on the assumption that the boundary-layer thickness δ is small in comparison with a characteristic length are some flows for which this assumption fails. Get this from a library! Turbulent boundary layer heat transfer experiments: convex curvature effects including introduction and recovery. [T W Simon; United States. National Aeronautics and Space Administration.; Lewis Research Center.;].

An experimental investigation has been carried out on a transitional boundary layer subject to high (initially 9%) freestream turbulence, strong acceleration (K = ν / U w 2 dU w / dx as high as 9 × 10 − 6), and strong concave curvature (boundary layer thickness between 2% and 5% of the wall radius of curvature). Mean and fluctuating velocity as well as turbulent shear stress are documented Cited by:   Streamline curvature in the plane of the mean flow is known to exert a proportionately greater effect on the turbulent mixing processes than might be expected from inspection of the conservation equations governing the evolution of the turbulence by: 3. Turbulent boundary layers with large streamline curvature effects This unique approach sets this book apart from its competitors and allows the instructor to adopt this book as a text and. @article{osti_, title = {Free-stream turbulence and concave curvature effects on heated, transitional boundary layers}, author = {Kim, J and Simon, T W and Russ, S G}, abstractNote = {An experimental investigation of transition in concave-curved boundary layers at two free-stream turbulence levels ( and percent) was performed.

The effects of convex curvature on boundary layer transition were examined experimentally in low and high free-stream turbulence, and in zero and favorable pressure gradients. For high turbulence with zero pressure gradient, transition along convex surfaces was found to be similar to that on flat surfaces, however at low turbulence levels Author: B.J. Abu-Ghannam, H.H. Nigim, P. Kavanagh. the flow near the wall makes turbulent boundary layers more resistant to flow separation. • The photographs depict the flow over a strongly curved surface, where there exists a strong adverse (positive) pressure gradient. • The boundary layer has a high momentum deficit. • In the case where the boundary layer is laminar, insufficient momentumFile Size: 1MB. Boundary layers for axisymmetric configurations are important in aeronautics, in the area of machine construction, and in industrial processing engineering. A significant effect of the lateral curvature on the boundary layer can be noticeable in the case of an aircraft fuselage and a long fiber. The basic mathematical relations regarding the curvature effects are considered, taking into Author: H. H. Fernholz, T. Podtschaske. We revisit the problem of a spatially developing turbulent boundary layer over a concave surface. Unlike previous investigations, we simulate the combined effects of streamline curvature as well as curvature-induced pressure gradients on the turbulence. Our focus is on investigating the response of the turbulent boundary layer to the sudden onset of curvature and the destabilising influence of Cited by: 5.