The flow around a foil with waterjet was investigated using the two-frame PIV(CACTUS 3.1) system After separation, unsteady recirculation & reattachment region was shown as a result at reading edge. Separation area was decreased to 1/3 more by water...
The flow around a foil with waterjet was investigated using the two-frame PIV(CACTUS 3.1) system After separation, unsteady recirculation & reattachment region was shown as a result at reading edge. Separation area was decreased to 1/3 more by waterjet system with coanda effect. Angle of attack and waterjet velocity was a variable in the experiment. Each parameters was controlled to 0°~35° and O[m/s] ~ 9.2[m/s]. The separation of flow appearanced at first when the angle cf attack is 17°~18°. However, according to grew up of velocity, beginning of the separation was delayed. In this experiment, vortex and separation region was disappeared by blown when each parameters are low level, and separation, controlled more certainly.