Experimental study of simultaneous measurement of velocity and surface topography: in the wake of a circular cylinder at low Reynolds number
A technique to provide simultaneous measurement on both free surface topography and the velocity vector field of free surface flows is further developed and validated. Testing was performed on the topography measurement by imaging static plastic wave samples over a wide range of amplitudes. Analysis on the accuracy of the topography reconstruction, the sensitivity to noise and the dependence on spatial resolution are presented. The displacement of the free surface is insensitive to noisy input and the sensitivity shows a linear dependence with the sample spacing. Simultaneous measurements of the free surface and associated velocity field in the wake of a circular cylinder are presented for Reynolds numbers between 55 and 100.
- de Kat R, van Oudheusden BW, Scarano F (2008) Instantaneous planar pressure field determination around a square-section cylinder based on time-resolved stereo-PIV. In: 14th international symposium on applications of laser techniques to fluid mechanics. Lisbon, PortugalGoogle Scholar
- Ng I, Kumar V, Sheard GJ, Hourigan K, Fouras (2010) A surface topography of jet shock cells in a hydraulic analogy. J Vis 13(3):175–176. doi:10.1007/s12650-010-0032-3
- Tanaka G, Okamoto K, Madarame H (2000) Experimental investigation on the interaction between a polymer solution jet and a free surface. Exp Fluids 29(2):178–183Google Scholar