Separated Turbulent Flow Over a Wavy Wall

DNS by Maaß and Schumann


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Description

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The impact of a wavy surface on turbulent flow is investigated by direct numerical simulations. By means of finite differences in terrain following coordinates, the method treats the flow in a plane channel with wavy lower and flat top surface. Both surfaces are smooth. The lower surface wave amplitude is 0.05 and the wavelength is 1 in units of the mean channel height. The Reynolds number in terms of mean velocity and mean channel height is 6760. At this Reynolds number an intermittend recirculation occurs. These parameters and flow conditions are, apart from the exact surface shape, similar to those reported by Hudson et. al (1996). (Case 76)

Fig. 1 of Maaß and Schumann (1994)

Figure 1: Perspective view of the computational domain (from Maaß and Schumann, 1996).

Simulation Method

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Available Measurements

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Previous and Reference Numerical Solutions

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References

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