1960
DOI: 10.1115/1.3662672
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Laminar Boundary Layers in Oscillatory Flow

Abstract: A study has been made of the effects of free stream oscillations on laminar boundary layers of the Howarth type. Detailed measurements of oscillations have been made for the two conditions of Blasius flow and a Howarth flow fairly near separation. It has been found that there are three types of behavior, corresponding to low, intermediate, and high frequencies. Low and very high frequency oscillations are shown to be well described by existing approximate solutions. However, an intermediate frequency region re… Show more

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Cited by 50 publications
(20 citation statements)
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“…The boundary layer theory of Schlichting (1932) is the basis of developments reported herein, with higher approximations of others (1961, 1967) and Shah (1970). Similar approaches can be found in the studies of Hill and Stenning (1960), Hori (1962), Hunt and Johns (1963), Dore (1968), Noda (1971) and others.…”
Section: Introductionsupporting
confidence: 71%
See 1 more Smart Citation
“…The boundary layer theory of Schlichting (1932) is the basis of developments reported herein, with higher approximations of others (1961, 1967) and Shah (1970). Similar approaches can be found in the studies of Hill and Stenning (1960), Hori (1962), Hunt and Johns (1963), Dore (1968), Noda (1971) and others.…”
Section: Introductionsupporting
confidence: 71%
“…If the amplitudes of fluctuation are small, such as (K(X, a/d)4f.l , the boundary layer behavior can be calculated by using Fourier series for arbitrary fluctuations of the free stream with time (Hill and Stenning, 1960). This method involves linearization of the stream function yl^y.i) , which is expanded in an infinite series yrx,y.^;ej = e(y i m + ty t (z) + t x Y s (z) + ...)e t'toi…”
Section: The Boundary Layer 1 the Velocity Distributionmentioning
confidence: 99%
“…Lighthill studied this problem by employing momentum integral method. These results were confirmed experimentally by Hill and Stenning [3]. In many industrial, aeronautical engineering, atomic propulsion and space science, the oscillatory flow past an infinite vertical porous plate plays an important role.…”
Section: Introductionsupporting
confidence: 55%
“…The same cam as that driving the strain membrane drove a piston-plate assembly at the template end, resulting in a similar oscillatory fluid motion without stretching the cells. The maximal shear stress oscillations were approximated from the velocity profile of fluid flow near an oscillating flat plate (37) for cyclic strain (0 Ϯ 0.15 and 0 Ϯ 0.24 dyn/cm 2 for 10% and 20% strain, respectively) and from the velocity profile of the shear wave layer of oscillatory fluid flow over a plate with high characteristic frequency fluctuations (19) for motion control (0 Ϯ 0.21 and 0 Ϯ 0.42 dyn/cm 2 for 10% and 20% deformation, respectively). For the static condition, the assembly was identical to that for the motion control and strain conditions, but the piston was not moved.…”
Section: Methodsmentioning
confidence: 99%