1
مکانیک::
نیروی پسای نوسانی
Moreover, due to the periodic and alternative vortex-shedding, the pressure field around the cylinder alternatively changes and causes fluctuating and oscillating drag and lift forces exerted to the cylinder.
Very little is indeed known about the effect of oscillating drag force, the ensuing IL VIV, the coupling of CF/IL VIV, the dependence on system parameters and how to realistically model these features.
They showed dual resonances in all f* cases and illustrated how the oscillating drag component is maximized when f* = 2 with the appearance of the P+S vortex wake mode associated with the maximum in-line response.
However, as the CF VIV and thus the associated q0y0-based nonlinear term are negligible in this range, the coefficient Cvx responsible for the peak Ax/D is mainly due to the oscillating drag p0-based linear term.
واژگان شبکه مترجمین ایران