Fluid Dynamics of Biomimetic Pectoral Fin Propulsion Using Immersed Boundary Method

Figure 11

Vortex structures, pressure distribution, and nondimensional surface force at selected phases in one period. The vortex structures are identified using the criterion, with magnitude of isosurfaces as , and the direction of main vortices is represented by arrows. The color scheme for pressure contours is such that red colors denote the highest pressure and blue the lowest pressure. The nondimensional surface force is represented by vector length scale with a black arrow.

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