scholarly journals Investigation of Two-dimensional Discrete Vortex Method with Viscous Diffusion Model.

1994 ◽  
Vol 60 (572) ◽  
pp. 1110-1117 ◽  
Author(s):  
Masataka Shintani ◽  
Hiroyuki Shiraishi ◽  
Teruaki Akamatsu
Keyword(s):  
Diffusion Model ◽  
Vortex Method ◽  
Two Dimensional ◽  
Discrete Vortex ◽  
Discrete Vortex Method

Numerical and Experimental Study of the Propulsive Speed of the Three Joint Bending Propulsion Mechanism

1996 ◽  
Vol 118 (1) ◽  
pp. 134-141 ◽  
Author(s):  
Motomu Nakashima ◽  
Kyosuke Ono
Keyword(s):  
Experimental Study ◽  
Numerical Method ◽  
Coupled System ◽  
Vortex Method ◽  
Simplified Model ◽  
Two Dimensional ◽  
Discrete Vortex ◽  
Discrete Vortex Method ◽  
Propulsion Mechanism ◽  
Phase Differences

The three joint bending propulsion mechanism as a simplified model offish propulsion is investigated. A numerical method for a coupled system of the bending propulsion mechanism and the fluid is developed, based on the two-dimensional discrete vortex method. The characteristics of the propulsive speed of the three joint bending propulsion mechanism are numerically and experimentally investigated. It is found that the propulsive speed has a maximum numerical and experimental value when all the phase differences of the joints are about zero for four amplitude patterns. The experimental propulsive speeds are found to be 65 ∼ 80 percent of the numerical ones.

170 Numerical Simulation of Flow around a Corrugated Airfoil by Two-Dimensional Discrete Vortex Method

2013 ◽  
Vol 2013.48 (0) ◽  
pp. 142-143
Author(s):  
Yixing LI ◽  
Joe YOSHIKAWA ◽  
Masaya SHIGETA ◽  
Seiichiro IZAWA ◽  
Yu FUKUNISHI
Keyword(s):  
Numerical Simulation ◽  
Vortex Method ◽  
Two Dimensional ◽  
Discrete Vortex ◽  
Discrete Vortex Method

Theoretical Study on the Flow About Savonius Rotor

1984 ◽  
Vol 106 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Takenori Ogawa
Keyword(s):  
Dimensional Analysis ◽  
Theoretical Study ◽  
Separated Flow ◽  
Vortex Method ◽  
Experimental Results ◽  
Two Dimensional ◽  
Discrete Vortex ◽  
Discrete Vortex Method ◽  
Savonius Rotor ◽  
Singularity Method

A method for the two-dimensional analysis of the separated flow about Savonius rotors is presented. Calculations are performed by combining the singularity method and the discrete vortex method. The method is applied to the simulation of flows about a stationary rotor and a rotating rotor. Moreover, torque and power coefficients are computed and compared with the experimental results presented by Sheldahl et al. Theoretical and experimental results agree well qualitatively.

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