Flow of foam past an elliptical obstacle.

  title={Flow of foam past an elliptical obstacle.},
  author={Benjamin Dollet and M{\'e}lanie Durth and François Graner},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  volume={73 6 Pt 1},
To investigate the link between discrete small-scale and continuous large scale mechanical properties of a foam, we observe its two-dimensional flow in a channel, around an elliptical obstacle. We measure the drag, lift, and torque acting on the ellipse versus the angle between its major axis and the flow direction. The drag increases with the spanwise dimension, in marked contrast with a square obstacle. The lift passes through a smooth extremum at an angle close to, but smaller than 45… 

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Electronic address: b.dollet@utwente.nl; Present address: Physics of Fluids
  • Electronic address: b.dollet@utwente.nl; Present address: Physics of Fluids