A Combined Experimental/Numerical Study of Unsteady Phenomena in a Laminar Separation Bubble

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The effect of small-amplitude convective disturbances on the size and bursting of a laminar separation bubble (2011, methodology): “Such an effect has been observed for LSBs earlier, and ways to diminish it include applying a Hanning window for the Fourier analysis (Marxen et al. 2003) or taking the time derivative of the signal before proceeding with the analysis (Maucher, Rist & Wagner 1997).”
Direct numerical simulations of forced and unforced separation bubbles on an airfoil at incidence (2008, methodology): “This behaviour appears qualitatively similar to that observed by Marxen et al. (2003) and Pauley et al. (1990) in flat-plate simulations, and results in the observed periodic oscillation in lift and drag coefficients, CL and CD .”
On the origin of the inflectional instability of a laminar separation bubble (2009, methodology): “This observation finds support from the studies of Watmuff (1999) and Marxen et al. (2003) who find the persistence of linear behaviour up to the streamwise location at which the disturbance amplitude reaches 20 % and 10 % of the free-stream velocity respectively.”
Investigations on controlled transition development in a laminar separation bubble by means of LDA and PIV (2004, methodology): “The TS amplitude was chosen in a way to match the experimental results (Marxen et al. 2002).”