Simulation of Cavitation Water Flows

Figure 9

Cavitation in a spillway chute. (a) Schematic of a hypothetical hole with a diameter on the surface of a model of Kárahnjúkar spillway at a distance from the inlet of  m. The total length of the spillway is  m and its slope is = 11°. Inset: the computed contours of velocity in the spillway. The distances of the sampling ports 1, 2, 3, and 4 from the inlet are 0, 107, 300, and 414 m, respectively. (b) The averaged air volume fraction as a function of at the sampling ports 1, 2, 3, and 4. Here, the squares, circles, diamonds, and left triangles represent the air volume fraction at the sampling ports 1 through 4, respectively. (c) The computed velocity vector field around the hole at the sampling port 3. Here, a color code as illustrated on the left-hand side of the hole is used to indicate the values of the local pressure.

(a)

(b)

(c)