This study investigates the unsteady flow phenomena generated from plunging wings with varying flexibility. The experiments were conducted in a wind tunnel with forward flight conditions at a chord based Reynolds number of 5300. The wings are fabricated out of homogeneous isotropic materials with values of 55 and 1702. The conditions of these experiments are matched to previous studies in a wat...

In this paper, we introduce the concepts of n-fold obstinate pseudo-hoop and n-fold obstinate filter in pseudo-hoops. Then we investigated these notions and proved some properties of them. Also, we discussed the relationship between n-fold obstinate pseudo-hoop and n-fold obstinate filter and other types of n-fold pseudo-hoops and n-fold filters such as n-fold (positive) implicative filter and ...

In this paper, the characteristics of aerated flow under a plunging solitary wave on 1:20 sloping beach are investigated numerically. The numerical model solves Reynolds-averaged Navier–Stokes equations for mean flow. turbulence is described by k−ε model, in which production and dissipation modified entrained air bubbles considered an additional term. A transient equation solved bubble transpor...

OBJECTIVE/HYPOTHESIS Plunging ranulas (PRs) are infrequently encountered. The origin of PRs is mostly from the sublingual gland (SLG). Different routes to manage PRs include marsupialization, simple SLG excision, and combined SLG and submandibular gland (SMG) excision either transcervically or transorally. In this study, we demonstrated our experience managing PRs via transoral excision of the ...

We present two-dimensional and three-dimensional (3-D) direct numerical simulations of large-amplitude plunging maneuvers at Reynolds numbers 5000, with velocity ratios , 1, 2. For all cases, the evolution force coefficients is qualitatively similar. The lift coefficient presents a pronounced peak toward end acceleration phase maneuver, local minimum in deceleration phase, second maneuver. ampl...