Deformation of a soft helical filament in an axial flow at low Reynolds number

Soft Matter ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 1898-1905 ◽  
Author(s):  
Mohammad K. Jawed ◽  
Pedro M. Reis
Keyword(s):  
Reynolds Number ◽  
Numerical Investigation ◽  
Low Reynolds Number ◽  
Axial Flow ◽  
Low Reynolds

We perform a numerical investigation of the deformation of a rotating helical filament subjected to an axial flow, under low Reynolds number conditions. This problem is motivated by the propulsion of bacteria that use a helical flagella.

Numerical Investigation of Airfoil Clocking in a Three-Stage Low Pressure Turbine

2001 ◽  
Author(s):  
Andrea Arnone ◽  
Michele Marconcini ◽  
Roberto Pacciani ◽  
Claudia Schipani ◽  
Ennio Spano
Keyword(s):  
Reynolds Number ◽  
Numerical Investigation ◽  
Relative Position ◽  
Low Reynolds Number ◽  
Three Dimensional ◽  
Operating Conditions ◽  
Low Pressure Turbine ◽  
Wake Interaction ◽  
Low Reynolds ◽  
Lp Turbine

A quasi–three–dimensional, blade–to–blade, time–accurate, viscous solver w as used for a three–stage LP turbine study Due to the low Reynolds number, transitional computations were performed. Unsteady analyses were then carried out by varying the circumferential relative position of consecutive vanes and blade rows to study the effects of clocking on the turbine’s performance. A clocking strategy developed in order to limit the number of configurations to be analyzed is discussed. The optimum analytically–determined clocking position is illustrated for two different operating conditions, referred to as cruise and takeoff. The effects of clocking on wake interaction mechanisms and unsteady blade loadings is presented and discussed. For low Reynolds number turbine flows, the importance of taking transition into account in clocking analysis is demonstrated by a comparison with a fully turbulent approach.

scholarly journals Numerical investigation of geometrical corrugation influence to vortex flowfields at low Reynolds number

2019 ◽  
Vol 14 (3) ◽  
pp. JFST0018-JFST0018
Author(s):  
Yuya YAMAGUCHI ◽  
Daisuke SASAKI ◽  
Masato OKAMOTO ◽  
Koji SHIMOYAMA ◽  
Shigeru OBAYASHI
Keyword(s):  
Reynolds Number ◽  
Numerical Investigation ◽  
Low Reynolds Number ◽  
Low Reynolds
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