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Figure 7

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Normal velocity field at 254 Hz. (a) direct reference computation without object; (b)–(d) u-iPTF results with the presence of a rigid obstacle at a distance of 10 cm from the plate and a width of (b) 15 cm, (c) 30 cm, and (d) 50 cm. The frames represent the shape of the rigid object in top view.
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