Premium
Chirality‐specific lift forces of helix under shear flows: Helix perpendicular to shear plane
Author(s) -
Zhang QiYi
Publication year - 2017
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.22675
Subject(s) - chirality (physics) , helix (gastropod) , lift (data mining) , shear flow , chemistry , shear (geology) , mechanics , classical mechanics , perpendicular , geometry , physics , materials science , geology , mathematics , composite material , paleontology , chiral symmetry breaking , quantum mechanics , snail , computer science , nambu–jona lasinio model , data mining , quark
Chiral objects in shear flow experience a chirality‐specific lift force. Shear flows past helices in a low Reynolds number regime were studied using slender‐body theory. The chirality‐specific lift forces in the vorticity direction experienced by helices are dominated by a set of helix geometry parameters: helix radius, pitch length, number of turns, and helix phase angle. Its analytical formula is given. The chirality‐specific forces are the physical reasons for the chiral separation of helices in shear flow. Our results are well supported by the latest experimental observations.