Picture of scraped petri dish

Scrape below the surface of Strathprints...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Explore world class Open Access research by researchers at Strathclyde, a leading technological university.

Explore

Numerical study of asymmetric effect on a pitching foil

Xiao, Qing and Liao, Wei (2009) Numerical study of asymmetric effect on a pitching foil. International Journal of Modern Physics C, 20 (10). pp. 1663-1680. ISSN 0129-1831

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

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.