Figure 5: Circulation measurement of vortex rings. | Nature Communications

Figure 5: Circulation measurement of vortex rings.

From: Origin and dynamics of vortex rings in drop splashing

Figure 5

Average angular velocity Ω (red squares corresponding to the left axis) and total circulation angle Θ (blue triangles corresponding to the right axis) measured for three subsequent rings as a function of Oh. (a) Measurement at an impact speed U=0.83 m s−1. (b) Measurement at an impact speed U=1.25 m s−1. (c) Measurement at an impact speed U=1.71 m s−1. (d) Measurement at an impact speed U=2.21 m s−1.

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