Microorganisms often swim within heterogeneous fluid media composed of multiple materials with very different properties. The swimming speed is greatly affected by the composition and rheology fluidic environment. In addition, biological locomotions are also strongly influenced presence phase boundaries free interfaces, across which physical properties may vary significantly. Using a two-fluid ...

Abstract Experimental and numerical results of a propeller 0.3 m diameter operated at 5000 RPM axial velocity ranging from 0 to 20 m/s advance ratio 0.8 are presented as preliminary step towards the definition benchmark configuration for low Reynolds number aeroacoustics. The corresponding rotational tip Mach is 0.23 based on blade sectional chord flow varies about 46000 106000 in operational d...