Aerodynamic Multiobjective Design Exploration of a Flapping Airfoil Using a Navier-Stokes Solver

2009 ◽  
Vol 6 (3) ◽  
pp. 256-270 ◽  
Author(s):  
Akira Oyama ◽  
Yoshiyuki Okabe ◽  
Koji Shimoyama ◽  
Kozo Fujii
Keyword(s):  
Navier Stokes ◽  
Design Exploration ◽  
Flapping Airfoil ◽  
Multiobjective Design

Aerodynamic Multiobjective Design Exploration of Flapping Wing Using a Navier–Stokes Solver

2011 ◽  
pp. 303-307
Author(s):  
Yuuki Yamazaki ◽  
Akira Oyama ◽  
Taku Nonomura ◽  
Kozo Fujii ◽  
Makoto Yamamoto
Keyword(s):  
Flapping Wing ◽  
Navier Stokes ◽  
Design Exploration ◽  
Multiobjective Design

1218 Large-Scale Multiobjective Design Exploration using K Computer

2014 ◽  
Vol 2014.11 (0) ◽  
pp. _1218-1_-_1218-5_
Author(s):  
Akira OYAMA ◽  
Tomoaki TATSUKAWA ◽  
Takeshi WATANABE
Keyword(s):  
Large Scale ◽  
Design Exploration ◽  
Multiobjective Design

Study of Aerodynamic Interactions of Dual Flapping Airfoils in Tandem Configurations

2012 ◽  
Vol 160 ◽  
pp. 301-306
Author(s):  
Bao Li Zhu ◽  
Hui Pen Wu ◽  
Tian Hang Xiao
Keyword(s):  
Viscous Flow ◽  
Great Influence ◽  
Aerodynamic Performance ◽  
Navier Stokes ◽  
Propulsive Efficiency ◽  
Motion Models ◽  
Hybrid Meshes ◽  
Thrust Generation ◽  
Unsteady Viscous Flow ◽  
Flapping Airfoil

The unsteady viscous flow fields of dual flapping airfoils in tandem configurations are simulated by a Navier-Stokes Solver based on dynamic deformable hybrid meshes. Aerodynamic interactions of three motion models are studied including flapping fore airfoil with fixed aft airfoil, two airfoils flapping in phase and out-of-phase. The results indicate that the aft airfoil in the wake of the flapping fore airfoil has great influence on the aerodynamic performance. When the fore airfoil flaps with a fixed aft airfoil, the thrust generation and thrust propulsive efficiency were enhanced by 65% and 44% respectively, compared to that of single flapping airfoil. When the two airfoils stoke in phase, the thrust generation is twice over that of single flapping airfoil. However the out-of-phase stroking has relatively much lower thrust.

0634 Multiobjective design exploration for designing a rocket launch site with evolutionary computation and large eddy simulations

2013 ◽  
Vol 2013 (0) ◽  
pp. _0634-01_-_0634-05_
Author(s):  
Tomoaki Tatsukawa ◽  
Yuki Nagata ◽  
Makoto Yamamoto ◽  
Taku Nonomura ◽  
Akira Oyama ◽  
...  
Keyword(s):  
Evolutionary Computation ◽  
Large Eddy Simulations ◽  
Design Exploration ◽  
Rocket Launch ◽  
Launch Site ◽  
Large Eddy ◽  
Multiobjective Design
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