Table 3 Fin research types and corresponding contents
Fin research types | Research contents |
|---|---|
Caudal fins | Computational model [150, 151]; Stiffness [50, 145, 152]; Leading edge [153]; Trailing-edge [154]; Sweep angle [155]; Motion Planning [156]; Effects of St and Re [157]; Optimal kinematics [158] |
Non-caudal fins | Â |
 Pectoral fins | Computational model at high Re and fin kinematics [147]; A structure design of pectoral fins [159, 160] |
 Median fins | Linear Acceleration [161]; elongated fin and dorsal fins [102] |
 Finlets | The wake structures and the flow around the finlet [162]; The hydrodynamic performance and vortex dynamics [148] |
 Comprehensive research | Biorobotic models of multi-fin systems [163]; The propulsive forces produced by multiple fins [149]; Numerical approach [164] |
Interactions | Body-fin and fin-fin interactions [165]; The structure relationships between body and caudal fin [166]; Interactions between caudal fin and pectoral fin [146] |