Measurements in an incompressible three-dimensional turbulent boundary layer, under infinite swept-wing conditions, and comparison with theory

B. van den Berg, A. Elsenaar, J.P.F. Lindhout, P. Wesseling

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    Abstract

    First a three-dimensional turbulent boundary-layer experiment is described. This has been carried out with the specific aim of providing a test-case for calculation methods. Much attention has been paid to the design of the test set-up. An infinite swept-wing flow has been simulated with good accuracy. The initially two-dimensional boundary layer on the test plate was subjected to an adverse pressure gradient, which led to three-dimensional separation near the trailing edge of the plate. Next, a calculation method for three-dimensional turbulent boundary layers is discussed. This solves the boundary-layer equations numerically by finite differences. The turbulent shear stress is obtained from a generalized version of Bradshaw's two-dimensional turbulent shear stress equation. The results of the calculations are compared with those of the experiment. Agreement is good over a considerable distance; but large discrepancies are apparent near the separation line.
    Original languageEnglish
    Pages (from-to)127-148
    JournalJournal of fluid mechanics
    Volume70
    Issue number1
    DOIs
    Publication statusPublished - 1975

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    three dimensional boundary layer
    swept wings
    Swept wings
    turbulent boundary layer
    Boundary layers
    shear stress
    two dimensional boundary layer
    Shear stress
    boundary layer equations
    trailing edges
    pressure gradients
    Pressure gradient
    Experiments

    Cite this

    van den Berg, B. ; Elsenaar, A. ; Lindhout, J.P.F. ; Wesseling, P. / Measurements in an incompressible three-dimensional turbulent boundary layer, under infinite swept-wing conditions, and comparison with theory. In: Journal of fluid mechanics. 1975 ; Vol. 70, No. 1. pp. 127-148.
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    Measurements in an incompressible three-dimensional turbulent boundary layer, under infinite swept-wing conditions, and comparison with theory. / van den Berg, B.; Elsenaar, A.; Lindhout, J.P.F.; Wesseling, P.

    In: Journal of fluid mechanics, Vol. 70, No. 1, 1975, p. 127-148.

    Research output: Contribution to journalArticleAcademic

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    T1 - Measurements in an incompressible three-dimensional turbulent boundary layer, under infinite swept-wing conditions, and comparison with theory

    AU - van den Berg, B.

    AU - Elsenaar, A.

    AU - Lindhout, J.P.F.

    AU - Wesseling, P.

    PY - 1975

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    AB - First a three-dimensional turbulent boundary-layer experiment is described. This has been carried out with the specific aim of providing a test-case for calculation methods. Much attention has been paid to the design of the test set-up. An infinite swept-wing flow has been simulated with good accuracy. The initially two-dimensional boundary layer on the test plate was subjected to an adverse pressure gradient, which led to three-dimensional separation near the trailing edge of the plate. Next, a calculation method for three-dimensional turbulent boundary layers is discussed. This solves the boundary-layer equations numerically by finite differences. The turbulent shear stress is obtained from a generalized version of Bradshaw's two-dimensional turbulent shear stress equation. The results of the calculations are compared with those of the experiment. Agreement is good over a considerable distance; but large discrepancies are apparent near the separation line.

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