[HTML][HTML] How wavelength affects hydrodynamic performance of two accelerating mirror-symmetric undulating hydrofoils
Fish schools are capable of simultaneous linear acceleration. To reveal the underlying
hydrodynamic mechanism, we numerically investigate how Reynolds number R e= 1000–
2000, Strouhal number S t= 0.2–0.7, and wavelength λ= 0.5–2 affect the mean net thrust
and net propulsive efficiency of two side-by-side hydrofoils undulating in anti-phase. In total,
550 cases are simulated using immersed boundary method. The thrust increases
significantly with the wavelength and the Strouhal number, yet only slightly with the …
hydrodynamic mechanism, we numerically investigate how Reynolds number R e= 1000–
2000, Strouhal number S t= 0.2–0.7, and wavelength λ= 0.5–2 affect the mean net thrust
and net propulsive efficiency of two side-by-side hydrofoils undulating in anti-phase. In total,
550 cases are simulated using immersed boundary method. The thrust increases
significantly with the wavelength and the Strouhal number, yet only slightly with the …