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- Title
Comparative study between a discrete vortex method and an immersed boundary–lattice Boltzmann method in 2D flapping flight analysis.
- Authors
Suzuki, Kosuke; Kato, Takeshi; Tsue, Kotaro; Yoshino, Masato; Denda, Mitsunori
- Abstract
Numerical analysis of the flapping flight of insects has attracted great attention because of the expectation for insect-inspired micro air vehicles. A lot of numerical methods for the insect flight have been proposed, and they can be classified into two categories: inviscid flow solvers and viscous flow solvers. The discrete vortex method (DVM) has been regarded as a successful method in the first category, and the immersed boundary–lattice Boltzmann method (IB-LBM) has recently been developed as an efficient method in the second category. However, a detailed comparative study between these methods has not been sufficiently performed. In this study, we compare the DVM with the IB-LBM in two-dimensional flapping flight analysis. As a result, it is found that the aerodynamic forces obtained by the DVM are comparable to those by the IB-LBM, when the effect of separated vortices is not so accumulated, and when the forward speed of the model is smaller than the flapping speed. In addition, the DVM has a difficulty in estimating the aerodynamic torque. In terms of the computational time, the DVM is much faster than the IB-LBM. This result suggests that the DVM can be used for massive parametric studies or optimizations in flapping flight analysis, although there remain many issues in its accuracy.
- Subjects
VORTEX methods; INVISCID flow; MICRO air vehicles; VISCOUS flow; INSECT flight; FLIGHT; AERODYNAMIC load
- Publication
International Journal of Modern Physics C: Computational Physics & Physical Computation, 2021, Vol 32, Issue 1, pN.PAG
- ISSN
0129-1831
- Publication type
Article
- DOI
10.1142/S0129183121500054