A DISA two-colour back-scatter laser Doppler anemometer was used to take measurements of mean and fluctuating velocities of an air flow of 4.6 × 104 Reynolds number in a short duct with a normal wall fixed to one side. Walls of 30 and 20 mm height were investigated and the resulting flow patterns were compared.
Get full access to this article
View all access options for this article.
References
1.
GoodM. C. G.JoubertP. N.‘The form drag of two dimensional bluff plates immersed in turbulent boundary layer’, J. Fluid Mech.196831, 547.
2.
ArieM.RouseH. ‘Experiments on two-dimensional flow over a normal wall’, J. Fluid Mech., 1959, 1, 129.
3.
FailR.LawfordJ. A.EyreR. C. W.Low speed experiments on the wake characteristics of flat plates normal to an air stream, Reports and Memoranda, No. 3120, 1957.
4.
PlateE. J.LinC. W.‘The drag on a smooth flat plate with a fence immersed in its boundary layer’, ASME paper No. 64-FE-17, 1964.
5.
ChedronW.DurstF.WhitelawJ. H.‘Asymmetric flows and instabilities in symmetric ducts with sudden expansion’, J. Fluid Mech.197884, 13.
6.
MoonL. F.RudingerG. ‘Velocity distribution in an abruptly expanding circular duct', Truns. Am. Soc. mech. Engrs, J. Fluid Engng197799, 226.
7.
SmythR. ‘Turbulent flow over a plane symmetric sudden expansion’, Trans. Am. Soc. mech. Engrs, J. Fluid Engng1979101, 348.
8.
DeanR. B.‘Reynolds number dependence of skin friction and other bulk flow variables in two-dimensional rectangular duct flow’, Trans. Am. Soc. mech. Engrs, J. Fluid Engng1978100, 215.
