Volume 23, Issue 4
Numerical Simulations for Aerodynamic Performance of a Butterfly-Like Flapping Wing-Body Model with Various Wing Planforms

Kosuke Suzuki & Masato Yoshino

Commun. Comput. Phys., 23 (2018), pp. 951-979.

Published online: 2018-04

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  • Abstract

Wing planform is one of important factors for lift and thrust generation and enhancement in flapping flight. In this study, we numerically investigate the effect of wing planform on aerodynamic performance of a butterfly-like flapping wing-body model by using the immersed boundary-lattice Boltzmann method. The model flaps downward for generating the lift force and backward for generating the thrust force like an actual butterfly. We calculate the aerodynamic performance such as the lift force, the thrust force, the power expenditure, and the power loading for (i) trapezoidal wing planforms with various taper ratios (ratio of the wing-tip length to the wing-root length), (ii) rectangular wing planforms with various aspect ratios (ratio of the square of the wing length to the wing area), and (iii) an actual butterfly’s wing planform at the Reynolds number of 500. As a result for the trapezoidal and rectangular wing planforms, we find that the lift and thrust forces increase at the cost of the power expenditure as the taper ratio increases and as the aspect ratio increases. In addition, it is found that the actual butterfly’s wing planform is more efficient than any of the trapezoidal and rectangular wing planforms.

  • Keywords

Lattice Boltzmann method, immersed boundary method, flapping flight, aerodynamic performance, wing planform.

  • AMS Subject Headings

76M28, 76Z10

  • Copyright

COPYRIGHT: © Global Science Press

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@Article{CiCP-23-951, author = {}, title = {Numerical Simulations for Aerodynamic Performance of a Butterfly-Like Flapping Wing-Body Model with Various Wing Planforms}, journal = {Communications in Computational Physics}, year = {2018}, volume = {23}, number = {4}, pages = {951--979}, abstract = {

Wing planform is one of important factors for lift and thrust generation and enhancement in flapping flight. In this study, we numerically investigate the effect of wing planform on aerodynamic performance of a butterfly-like flapping wing-body model by using the immersed boundary-lattice Boltzmann method. The model flaps downward for generating the lift force and backward for generating the thrust force like an actual butterfly. We calculate the aerodynamic performance such as the lift force, the thrust force, the power expenditure, and the power loading for (i) trapezoidal wing planforms with various taper ratios (ratio of the wing-tip length to the wing-root length), (ii) rectangular wing planforms with various aspect ratios (ratio of the square of the wing length to the wing area), and (iii) an actual butterfly’s wing planform at the Reynolds number of 500. As a result for the trapezoidal and rectangular wing planforms, we find that the lift and thrust forces increase at the cost of the power expenditure as the taper ratio increases and as the aspect ratio increases. In addition, it is found that the actual butterfly’s wing planform is more efficient than any of the trapezoidal and rectangular wing planforms.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2016-0238}, url = {http://global-sci.org/intro/article_detail/cicp/11201.html} }
TY - JOUR T1 - Numerical Simulations for Aerodynamic Performance of a Butterfly-Like Flapping Wing-Body Model with Various Wing Planforms JO - Communications in Computational Physics VL - 4 SP - 951 EP - 979 PY - 2018 DA - 2018/04 SN - 23 DO - http://dor.org/10.4208/cicp.OA-2016-0238 UR - https://global-sci.org/intro/cicp/11201.html KW - Lattice Boltzmann method, immersed boundary method, flapping flight, aerodynamic performance, wing planform. AB -

Wing planform is one of important factors for lift and thrust generation and enhancement in flapping flight. In this study, we numerically investigate the effect of wing planform on aerodynamic performance of a butterfly-like flapping wing-body model by using the immersed boundary-lattice Boltzmann method. The model flaps downward for generating the lift force and backward for generating the thrust force like an actual butterfly. We calculate the aerodynamic performance such as the lift force, the thrust force, the power expenditure, and the power loading for (i) trapezoidal wing planforms with various taper ratios (ratio of the wing-tip length to the wing-root length), (ii) rectangular wing planforms with various aspect ratios (ratio of the square of the wing length to the wing area), and (iii) an actual butterfly’s wing planform at the Reynolds number of 500. As a result for the trapezoidal and rectangular wing planforms, we find that the lift and thrust forces increase at the cost of the power expenditure as the taper ratio increases and as the aspect ratio increases. In addition, it is found that the actual butterfly’s wing planform is more efficient than any of the trapezoidal and rectangular wing planforms.

Kosuke Suzuki & Masato Yoshino. (2020). Numerical Simulations for Aerodynamic Performance of a Butterfly-Like Flapping Wing-Body Model with Various Wing Planforms. Communications in Computational Physics. 23 (4). 951-979. doi:10.4208/cicp.OA-2016-0238
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