Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1663-1680 |
| Number of pages | 18 |
| Journal | International Journal of Modern Physics C |
| Volume | 20 |
| Issue number | 10 |
| Early online date | 16 Jun 2009 |
| DOIs | |
| Publication status | Published - Oct 2009 |
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Keywords
- asymmetry
- sinusoidal motion
- pitching foil
- thrust performance
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Numerical study of asymmetric effect on a pitching foil. / Xiao, Qing; Liao, Wei.
In: International Journal of Modern Physics C, Vol. 20, No. 10, 10.2009, p. 1663-1680.Research output: Contribution to journal › Article
TY - JOUR
T1 - Numerical study of asymmetric effect on a pitching foil
AU - Xiao, Qing
AU - Liao, Wei
PY - 2009/10
Y1 - 2009/10
N2 - This study investigates numerically the effect of asymmetric sinusoidal oscillating motion on the propulsion performance of a pitching foil and attempts to gain insight in whether the low thrust generated by pure pitching could be improved by asymmetric motion. The propulsion performance and flow structure are explored by solving the unsteady Navier{Stokes equations. Computations are conducted for a range of oscillation frequency, pitching amplitude, and asymmetry. The results show that the higher asymmetry can induce the stronger reverse Von Karman vortex in the wake, which in turn leads to the increased thrust. However, the propulsion effciency reduces as increasing asymmetry. Computed results are further adopted to shed insight into the mechanism of thrust enhancement.
AB - This study investigates numerically the effect of asymmetric sinusoidal oscillating motion on the propulsion performance of a pitching foil and attempts to gain insight in whether the low thrust generated by pure pitching could be improved by asymmetric motion. The propulsion performance and flow structure are explored by solving the unsteady Navier{Stokes equations. Computations are conducted for a range of oscillation frequency, pitching amplitude, and asymmetry. The results show that the higher asymmetry can induce the stronger reverse Von Karman vortex in the wake, which in turn leads to the increased thrust. However, the propulsion effciency reduces as increasing asymmetry. Computed results are further adopted to shed insight into the mechanism of thrust enhancement.
KW - asymmetry
KW - sinusoidal motion
KW - pitching foil
KW - thrust performance
U2 - 10.1142/S0129183109014667
DO - 10.1142/S0129183109014667
M3 - Article
VL - 20
SP - 1663
EP - 1680
JO - International Journal of Modern Physics C
JF - International Journal of Modern Physics C
SN - 0129-1831
IS - 10
ER -