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, an innovative concept is introduced for reducing the displacement response of tower type fixed offshore platforms to wave loads, which is based on utilizing a Hydrodynamic Buoyant Mass Damper (HBMD), which employs damper's buoyancy and inertia forces, along with hydrodynamic damping effects, to reduce the platform displacement response.
32 citations
Patent•
28 Sep 2006TL;DR: In this article, a method of controlling a controllable chassis system or a safety system for a vehicle (44) includes determining an added mass placed on the vehicle and relative to a known vehicle mass.
Abstract: A method of controlling a controllable chassis system or a safety system (44) for a vehicle (10) includes determining an added mass placed on the vehicle and relative to a known vehicle mass. A vehicle characteristic is adjusted in response to the added mass. A control system (18) for an automotive vehicle (10) includes a sensor (20, 28-42) that generates a signal. A controller (26) determines added mass on the vehicle (10) in response to the signal and adjusts a vehicle characteristic in response to the added mass.
32 citations
TL;DR: In this paper, it was shown that for the thin cylinder limiting case, the transverse force on a circular cylinder is incorrectly given by the conventional approach, in that the product of transverse fluid velocity (in the direction of the required force) with the longitudinal velocity gradient should be added to the water particle acceleration, when computing the added mass component of the force.
Abstract: Wave loads on the cylindrical members of fixed offshore structures are generally calculated by using Morison’s Equation. The inertia force component of this equation is conventionally quoted in a form derived from theoretical calculations for a uniformly accelerating fluid. In this paper the correct form for the inertia force in a general fluid flow is derived from first principles by pressure integration and, independently, from earlier work, by energy arguments. It is shown that, for the thin cylinder limiting case, the transverse force on a circular cylinder is incorrectly given by the conventional approach, in that the product of transverse fluid velocity (in the direction of the required force) with the longitudinal velocity gradient should be added to the water particle acceleration, when computing the added-mass component of the force. Axial divergence, in other words, appears to play the role of a rate-of-change of added mass. It is shown that the mathematical origin of this extra term is the classical three-dimensional flow feature of a ‘zonal harmonic’, which produces a convective fluid acceleration but zero loading. A more elaborate formula is derived for non-circular cylinders, and the nature of point loads occurring at cylinder ends is also discussed.
32 citations
17 Jan 2018
TL;DR: The added mass concept can be validly applied to viscous flows, provided that the circulatory-force expression accounts for image vorticity as discussed by the authors, and the most appropriate physical interpretation of added mass is discussed.
Abstract: The added-mass concept can be validly applied to viscous flows, provided that the circulatory-force expression accounts for image vorticity. The relationship between added mass and image vorticity is explored, and the most appropriate physical interpretation of added mass is discussed.
32 citations
01 Nov 1971
32 citations