Open AccessВлияние отверстий в пористой поверхности земли на парящий полет насекомого
Author(s) -
Xin-Ping Zhou,
Yong Huang
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.22.51722.18796
Subject(s) - flapping , aperture (computer memory) , foil method , rotation (mathematics) , aerodynamics , vortex , ground effect (cars) , aerospace engineering , physics , mechanics , acoustics , engineering , materials science , computer science , artificial intelligence , wing , composite material
Aerodynamics of a flapping foil at low Reynolds number in close proximity to the ground in aperture effect are studied by numerical simulations based on the normal hovering motion mode. A vortex street is interestingly generated by both ground and aperture effects and the rotation of the foil. The study reveals that the aperture takes a force-reduction effect and a large enough aperture effectively can remove the ground force-enhancement effect produced when the foil is in close proximity to the ground. This paper provides an effective method of optimizing foil-flapping flight design of flying robotics over a porous plane.