Topic
Added mass
About: Added mass is a research topic. Over the lifetime, 2849 publications have been published within this topic receiving 47899 citations.
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TL;DR: In this article, the authors studied flexural vibrations of a cantilever beam with thin rectangular cross section submerged in a quiescent viscous fluid and undergoing oscillations whose amplitude is comparable with its width.
106 citations
TL;DR: In this paper, the Lagrangian approach was used to track the bubble trajectories in homogeneous and isotropic turbulence, where mass, drag, lift, and gravity were added to the Navier-Stokes equations.
Abstract: The motion and the action of microbubbles in homogeneous and isotropic turbulence are investigated through (three-dimensional) direct numerical simulations of the Navier–Stokes equations and applying the Lagrangian approach to track the bubble trajectories. The forces acting on the bubbles are added mass, drag, lift, and gravity. The bubbles are found to accumulate in vortices, preferably on the side with downward velocity. This effect, mainly caused by the lift force, leads to a reduced average bubble rise velocity. Once the reaction of the bubbles on the carrier flow is embodied using a point-force approximation, an attenuation of the turbulence on large scales and an extra forcing on small scales is found.
105 citations
TL;DR: In this article, different cantilever geometries with in-plane resonance frequencies from 50 kHz to 2.2 MHz have been tested, with quality factors as high as 4200 in air and 67 in water.
Abstract: Thermally excited and piezoresistively detected bulk-micromachined cantilevers vibrating in their in-plane flexural resonance mode are presented. By shearing the surrounding fluid rather than exerting normal stress on it, the in-plane mode cantilevers exhibit reduced added fluid mass effects and improved quality factors in a fluid environment. In this letter, different cantilever geometries with in-plane resonance frequencies from 50 kHz to 2.2 MHz have been tested, with quality factors as high as 4200 in air and 67 in water.
105 citations
TL;DR: In this article, the authors present a review and a numerical study of the fundamental properties of the added mass of a plane flexible plate oscillating in a fluid, where the plate is clamped at one edge and free at the other edges.
104 citations
TL;DR: In this article, a numerical simulation to analyze the influence of the surrounding water in a turbine runner has been carried out using finite element method (FEM), and the added mass effect due to the fluid structure interaction has been discussed in detail.
104 citations